Company lists · Data refreshed November 2026
Top 25 Administrative services organizations based in the United States
RevenueBase identified 3,222 company matches for administrative services organizations associated with the United States as of November 2026 and tracks 66,264 professional contacts across them, including 25,918 with verified work emails. Houston is the largest hub.
This list covers company matches for administrative services organizations associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest administrative services organizations based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,280 contacts → | ||||
Exact match “Parallon leverages extensive expertise across a broad portfolio of revenue cycle, contact center, and clinical and administrative shared services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 4,943 contacts → | ||||
Exact match “Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 4,083 contacts → | ||||
Exact match “Gusto has been growing the small business economy with technology and heart for more than a decade.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 2,771 contacts → | ||||
Exact match “VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 1,447 contacts → | ||||
Exact match “PACS trains and hires healthcare leaders, and provides a wide array of back-office support services to healthcare facilities, reducing administrative burdens so local leadership…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 1,182 contacts → | ||||
Exact match “NASCO empowers health plans to innovate, grow, and deliver better experiences through a comprehensive suite of healthcare technology solutions and services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 915 contacts → | ||||
Exact match “Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 754 contacts → | ||||
Exact match “Associations help industries, fields and professions stay current and connected for the members and communities who depend on them.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 645 contacts → | ||||
Exact match “Medica Health Management provides comprehensive business management services, including: clinical, financial, administrative, human resources and marketing to Home Health and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 618 contacts → | ||||
Exact match “Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 611 contacts → | ||||
Exact match “We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 549 contacts → | ||||
Exact match “EDI is a top company in association management, providing professional services for national and international medical, certification, and scientific associations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 519 contacts → | ||||
Exact match “CoAdvantage is now CoAd.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 517 contacts → | ||||
Exact match “In today's fast-paced business landscape, multi-unit companies demand more than just basic operations-they need expert guidance and cutting-edge technology to thrive.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 476 contacts → | ||||
Exact match “Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 445 contacts → | ||||
Exact match “Sutter Shared Services provides health management and administrative services to physician groups and health systems across the nation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 433 contacts → | ||||
Exact match “ProService Hawaii provides bundled HR solutions that make it easier for employers to succeed.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 414 contacts → | ||||
Exact match “Headway Workforce Solutions is a leading B2B (Business to Business) provider of HR Administration Outsourcing and Talent Solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 412 contacts → | ||||
Exact match “FrankCrum offers outsourced HR, payroll and payroll administration, employee benefits and benefits administration, 401(k), workers compensation and HR Solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 394 contacts → | ||||
Exact match “Most founders don't start a business because they love navigating HR compliance, filing payroll taxes, or negotiating healthcare premiums.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 384 contacts → | ||||
Exact match “Benefit challenges facing employers today are extremely complex.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 354 contacts → | ||||
Exact match “If you’re like us, you’re in business to do what you love, build great products, teams, and customer relationships.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 346 contacts → | ||||
Exact match “BASIC's integrated HR solutions come full-circle for employers nationwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 318 contacts → | ||||
Exact match “Femwell Group Health is Florida’s leading management services organization (MSO) providing cost-effective business solutions so physicians can efficiently and profitably run their…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 312 contacts → | ||||
Exact match “HealthSCOPE Benefits is a full service claims administration and health management firm providing administrative and other support services to self-funded employers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “administrative services organizations”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 3,222 administrative services organizations based in the United States
See the full list, filter by size, metro and specialty, and access 25,918 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Administrative services organizations based in the United States at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,222 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “administrative services organizations” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 25,918 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Administrative services organizations by metro
- Administrative services organizations in Houston62
- Administrative services organizations in Atlanta61
- Administrative services organizations in New York60
- Administrative services organizations in Los Angeles35
- Administrative services organizations in Austin34
- Administrative services organizations in Chicago32
- Administrative services organizations in Denver31
- Administrative services organizations in Phoenix31
- Administrative services organizations in Miami29
- Administrative services organizations in Las Vegas28
- Administrative services organizations in Dallas27
- Administrative services organizations in San Diego26
- Administrative services organizations in Tampa26
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “administrative services organizations”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many administrative services organizations are there based in the United States?
RevenueBase identified 3,222 company matches for administrative services organizations associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Parallon tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most administrative services organizations?
Houston leads with 62 company records, followed by Atlanta (61) and New York (60).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 25,918 professional contacts with verified work emails tracked across these 3,222 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,222 administrative services organizations based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Administrative services organizations by geography
- Administrative services organizations based in Melbourne, Australia
- Administrative services organizations based in Sydney, Australia
- Administrative services organizations based in Rio De Janeiro, Brazil
- Administrative services organizations based in Sao Paulo, Brazil
- Administrative services organizations based in Toronto, Canada
- Administrative services organizations based in Paris, France
- Administrative services organizations based in Chennai, India
- Administrative services organizations based in Mexico City, Mexico
- Administrative services organizations based in Amsterdam, Netherlands
- Administrative services organizations based in Warsaw, Poland
- Administrative services organizations based in Johannesburg, South Africa
- Administrative services organizations based in Pretoria, South Africa
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Administrative services organizations based in Melbourne, Australia
- Administrative services organizations based in Sydney, Australia
- Administrative services organizations based in Rio De Janeiro, Brazil
- Administrative services organizations based in Sao Paulo, Brazil
- Administrative services organizations based in Toronto, Canada
- Administrative services organizations based in Paris, France
Company intelligence · public preview
Top 25 administrative services organizations based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,222 matching company records for administrative services organizations based in the United States, with 66,264 tracked contacts and 25,918 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 administrative services organizations based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Parallonparallon.comHQ: Nashville, TN, United StatesReported employees: 10001+ | Nashville, TN, United States | 10001+ | Exact match | 6,280 contacts → |
“Parallon leverages extensive expertise across a broad portfolio of revenue cycle, contact center, and clinical and administrative shared services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Insperityinsperity.comHQ: Kingwood, TX, United StatesReported employees: 1,001-5,000 | Kingwood, TX, United States | 1,001-5,000 | Exact match | 4,943 contacts → |
“Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  GUSTOgusto.comHQ: San Francisco, CO, United StatesReported employees: 1,001-5,000 | San Francisco, CO, United States | 1,001-5,000 | Exact match | 4,083 contacts → |
“Gusto has been growing the small business economy with technology and heart for more than a decade.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Vensure Employer Solutionsvensure.comHQ: Chandler, FL, United StatesReported employees: 1,001-5,000 | Chandler, FL, United States | 1,001-5,000 | Exact match | 2,771 contacts → |
“VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  PACSpacs.comHQ: Salt Lake City, UT, United StatesReported employees: 501-1,000 | Salt Lake City, UT, United States | 501-1,000 | Exact match | 1,447 contacts → |
“PACS trains and hires healthcare leaders, and provides a wide array of back-office support services to healthcare facilities, reducing administrative burdens so local leadership…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  NASCOnasco.comHQ: Atlanta, PA, United StatesReported employees: 201-500 | Atlanta, PA, United States | 201-500 | Exact match | 1,182 contacts → |
“NASCO empowers health plans to innovate, grow, and deliver better experiences through a comprehensive suite of healthcare technology solutions and services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  G&a Partnersgnapartners.comHQ: Houston, CA, United StatesReported employees: 501-1,000 | Houston, CA, United States | 501-1,000 | Exact match | 915 contacts → |
“Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Smithbucklinsmithbucklin.comHQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 754 contacts → |
“Associations help industries, fields and professions stay current and connected for the members and communities who depend on them.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Medica Health Managementmedicahealth.comHQ: Southlake, TX, United StatesReported employees: 201-500 | Southlake, TX, United States | 201-500 | Exact match | 645 contacts → |
“Medica Health Management provides comprehensive business management services, including: clinical, financial, administrative, human resources and marketing to Home Health and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Metriqe Solutionsmetriqe.comHQ: Irving, TX, United StatesReported employees: 201-500 | Irving, TX, United States | 201-500 | Exact match | 618 contacts → |
“Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Group Management Services, INCgroupmgmt.comHQ: Richfield, NC, United StatesReported employees: 501-1,000 | Richfield, NC, United States | 501-1,000 | Exact match | 611 contacts → |
“We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Executive Director, INCexecinc.comHQ: Milwaukee, WI, United StatesReported employees: 201-500 | Milwaukee, WI, United States | 201-500 | Exact match | 549 contacts → |
“EDI is a top company in association management, providing professional services for national and international medical, certification, and scientific associations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Coadvantagecoad.comHQ: Bradenton, FL, United StatesReported employees: 201-500 | Bradenton, FL, United States | 201-500 | Exact match | 519 contacts → |
“CoAdvantage is now CoAd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Infosyncissvc.comHQ: Wichita, KS, United StatesReported employees: 501-1,000 | Wichita, KS, United States | 501-1,000 | Exact match | 517 contacts → |
“In today's fast-paced business landscape, multi-unit companies demand more than just basic operations-they need expert guidance and cutting-edge technology to thrive.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Velan Info Servicesvelaninfo.comHQ: Dover, DE, United StatesReported employees: 201-500 | Dover, DE, United States | 201-500 | Exact match | 476 contacts → |
“Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Sutter Shared Servicessutterphysicianservices.comHQ: Sacramento, UT, United StatesReported employees: 1,001-5,000 | Sacramento, UT, United States | 1,001-5,000 | Exact match | 445 contacts → |
“Sutter Shared Services provides health management and administrative services to physician groups and health systems across the nation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Proservice Hawaiiproservice.comHQ: Honolulu, HI, United StatesReported employees: 201-500 | Honolulu, HI, United States | 201-500 | Exact match | 433 contacts → |
“ProService Hawaii provides bundled HR solutions that make it easier for employers to succeed.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Headway Workforce Solutionsheadwaywfs.comHQ: Raleigh, NC, United StatesReported employees: Not recorded | Raleigh, NC, United States | Not recorded | Exact match | 414 contacts → |
“Headway Workforce Solutions is a leading B2B (Business to Business) provider of HR Administration Outsourcing and Talent Solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Frankcrumfrankcrum.comHQ: Clearwater, FL, United StatesReported employees: 201-500 | Clearwater, FL, United States | 201-500 | Exact match | 412 contacts → |
“FrankCrum offers outsourced HR, payroll and payroll administration, employee benefits and benefits administration, 401(k), workers compensation and HR Solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Nextepnextep.comHQ: Norman, OK, United StatesReported employees: 201-500 | Norman, OK, United States | 201-500 | Exact match | 394 contacts → |
“Most founders don't start a business because they love navigating HR compliance, filing payroll taxes, or negotiating healthcare premiums.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Kelly Benefitskellybenefits.comHQ: Sparks, MD, United StatesReported employees: 201-500 | Sparks, MD, United States | 201-500 | Exact match | 384 contacts → |
“Benefit challenges facing employers today are extremely complex.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Escalon Servicesescalon.servicesHQ: Dover, TX, United StatesReported employees: 1,001-5,000 | Dover, TX, United States | 1,001-5,000 | Exact match | 354 contacts → |
“If you’re like us, you’re in business to do what you love, build great products, teams, and customer relationships.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  BASICbasiconline.comHQ: Monona, MI, United StatesReported employees: 51-200 | Monona, MI, United States | 51-200 | Exact match | 346 contacts → |
“BASIC's integrated HR solutions come full-circle for employers nationwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Femwell Group Healthfemwell.comHQ: Miami, FL, United StatesReported employees: 51-200 | Miami, FL, United States | 51-200 | Exact match | 318 contacts → |
“Femwell Group Health is Florida’s leading management services organization (MSO) providing cost-effective business solutions so physicians can efficiently and profitably run their…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Healthscope Benefitshealthscopebenefits.comHQ: Little Rock, AR, United StatesReported employees: 501-1,000 | Little Rock, AR, United States | 501-1,000 | Exact match | 312 contacts → |
“HealthSCOPE Benefits is a full service claims administration and health management firm providing administrative and other support services to self-funded employers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,222 company matches
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Administrative services organizations: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,212 records in the displayed employee bands.
10 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,222 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Administrative services organizations by metro
- Administrative services organizations in Houston62
- Administrative services organizations in Atlanta61
- Administrative services organizations in New York60
- Administrative services organizations in Los Angeles35
- Administrative services organizations in Austin34
- Administrative services organizations in Chicago32
- Administrative services organizations in Denver31
- Administrative services organizations in Phoenix31
- Administrative services organizations in Miami29
- Administrative services organizations in Las Vegas28
- Administrative services organizations in Dallas27
- Administrative services organizations in San Diego26
- Administrative services organizations in Tampa26
Questions about this company list
What does Exact match mean for administrative services organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many administrative services organizations did RevenueBase find based in the United States?
The saved snapshot records 3,222 matching company records, 66,264 tracked contacts and 25,918 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Administrative services organizations by geography
- Administrative services organizations based in Melbourne, Australia
- Administrative services organizations based in Sydney, Australia
- Administrative services organizations based in Rio De Janeiro, Brazil
- Administrative services organizations based in Sao Paulo, Brazil
- Administrative services organizations based in Toronto, Canada
- Administrative services organizations based in Paris, France
- Administrative services organizations based in Chennai, India
- Administrative services organizations based in Mexico City, Mexico
- Administrative services organizations based in Amsterdam, Netherlands
- Administrative services organizations based in Warsaw, Poland
- Administrative services organizations based in Johannesburg, South Africa
- Administrative services organizations based in Pretoria, South Africa
Cite this list
RevenueBase Data Team. Top 25 administrative services organizations based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/administrative-services-organizations/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Administrative services organizations based in Melbourne, Australia
- Administrative services organizations based in Sydney, Australia
- Administrative services organizations based in Rio De Janeiro, Brazil
- Administrative services organizations based in Sao Paulo, Brazil
- Administrative services organizations based in Toronto, Canada
- Administrative services organizations based in Paris, France
Company intelligence · public preview
Top 25 administrative services organizations based in the United States
RevenueBase records 3,222 matching company records for administrative services organizations based in the United States, with 66,264 tracked contacts and 25,918 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 administrative services organizations based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Parallonparallon.com HQ: Nashville, TN, United StatesReported employees: 10001+ | Nashville, TN, United States | 10001+ | Exact match | 6,280 contacts → |
“Parallon leverages extensive expertise across a broad portfolio of revenue cycle, contact center, and clinical and administrative shared services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Insperityinsperity.com HQ: Kingwood, TX, United StatesReported employees: 1,001-5,000 | Kingwood, TX, United States | 1,001-5,000 | Exact match | 4,943 contacts → |
“Since 1986, Insperity’s mission has been to help businesses succeed so communities prosper.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | GUSTOgusto.com HQ: San Francisco, CO, United StatesReported employees: 1,001-5,000 | San Francisco, CO, United States | 1,001-5,000 | Exact match | 4,083 contacts → |
“Gusto has been growing the small business economy with technology and heart for more than a decade.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Vensure Employer Solutionsvensure.com HQ: Chandler, FL, United StatesReported employees: 1,001-5,000 | Chandler, FL, United States | 1,001-5,000 | Exact match | 2,771 contacts → |
“VensureHR is the direct employer services business unit of Vensure Employer Solutions, the largest privately held organization in the HR technology and services sector, delivering…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | PACSpacs.com HQ: Salt Lake City, UT, United StatesReported employees: 501-1,000 | Salt Lake City, UT, United States | 501-1,000 | Exact match | 1,447 contacts → |
“PACS trains and hires healthcare leaders, and provides a wide array of back-office support services to healthcare facilities, reducing administrative burdens so local leadership…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | NASCOnasco.com HQ: Atlanta, PA, United StatesReported employees: 201-500 | Atlanta, PA, United States | 201-500 | Exact match | 1,182 contacts → |
“NASCO empowers health plans to innovate, grow, and deliver better experiences through a comprehensive suite of healthcare technology solutions and services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | G&a Partnersgnapartners.com HQ: Houston, CA, United StatesReported employees: 501-1,000 | Houston, CA, United States | 501-1,000 | Exact match | 915 contacts → |
“Managing HR, payroll, benefits, and compliance can stretch your team thin, and mistakes are costly.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Smithbucklinsmithbucklin.com HQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 754 contacts → |
“Associations help industries, fields and professions stay current and connected for the members and communities who depend on them.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Medica Health Managementmedicahealth.com HQ: Southlake, TX, United StatesReported employees: 201-500 | Southlake, TX, United States | 201-500 | Exact match | 645 contacts → |
“Medica Health Management provides comprehensive business management services, including: clinical, financial, administrative, human resources and marketing to Home Health and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Metriqe Solutionsmetriqe.com HQ: Irving, TX, United StatesReported employees: 201-500 | Irving, TX, United States | 201-500 | Exact match | 618 contacts → |
“Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Group Management Services, INCgroupmgmt.com HQ: Richfield, NC, United StatesReported employees: 501-1,000 | Richfield, NC, United States | 501-1,000 | Exact match | 611 contacts → |
“We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Executive Director, INCexecinc.com HQ: Milwaukee, WI, United StatesReported employees: 201-500 | Milwaukee, WI, United States | 201-500 | Exact match | 549 contacts → |
“EDI is a top company in association management, providing professional services for national and international medical, certification, and scientific associations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Coadvantagecoad.com HQ: Bradenton, FL, United StatesReported employees: 201-500 | Bradenton, FL, United States | 201-500 | Exact match | 519 contacts → |
“CoAdvantage is now CoAd.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Infosyncissvc.com HQ: Wichita, KS, United StatesReported employees: 501-1,000 | Wichita, KS, United States | 501-1,000 | Exact match | 517 contacts → |
“In today's fast-paced business landscape, multi-unit companies demand more than just basic operations-they need expert guidance and cutting-edge technology to thrive.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Velan Info Servicesvelaninfo.com HQ: Dover, DE, United StatesReported employees: 201-500 | Dover, DE, United States | 201-500 | Exact match | 476 contacts → |
“Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Sutter Shared Servicessutterphysicianservices.com HQ: Sacramento, UT, United StatesReported employees: 1,001-5,000 | Sacramento, UT, United States | 1,001-5,000 | Exact match | 445 contacts → |
“Sutter Shared Services provides health management and administrative services to physician groups and health systems across the nation.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Proservice Hawaiiproservice.com HQ: Honolulu, HI, United StatesReported employees: 201-500 | Honolulu, HI, United States | 201-500 | Exact match | 433 contacts → |
“ProService Hawaii provides bundled HR solutions that make it easier for employers to succeed.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Headway Workforce Solutionsheadwaywfs.com HQ: Raleigh, NC, United StatesReported employees: Not recorded | Raleigh, NC, United States | Not recorded | Exact match | 414 contacts → |
“Headway Workforce Solutions is a leading B2B (Business to Business) provider of HR Administration Outsourcing and Talent Solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Frankcrumfrankcrum.com HQ: Clearwater, FL, United StatesReported employees: 201-500 | Clearwater, FL, United States | 201-500 | Exact match | 412 contacts → |
“FrankCrum offers outsourced HR, payroll and payroll administration, employee benefits and benefits administration, 401(k), workers compensation and HR Solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Nextepnextep.com HQ: Norman, OK, United StatesReported employees: 201-500 | Norman, OK, United States | 201-500 | Exact match | 394 contacts → |
“Most founders don't start a business because they love navigating HR compliance, filing payroll taxes, or negotiating healthcare premiums.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Kelly Benefitskellybenefits.com HQ: Sparks, MD, United StatesReported employees: 201-500 | Sparks, MD, United States | 201-500 | Exact match | 384 contacts → |
“Benefit challenges facing employers today are extremely complex.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Escalon Servicesescalon.services HQ: Dover, TX, United StatesReported employees: 1,001-5,000 | Dover, TX, United States | 1,001-5,000 | Exact match | 354 contacts → |
“If you’re like us, you’re in business to do what you love, build great products, teams, and customer relationships.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | BASICbasiconline.com HQ: Monona, MI, United StatesReported employees: 51-200 | Monona, MI, United States | 51-200 | Exact match | 346 contacts → |
“BASIC's integrated HR solutions come full-circle for employers nationwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Femwell Group Healthfemwell.com HQ: Miami, FL, United StatesReported employees: 51-200 | Miami, FL, United States | 51-200 | Exact match | 318 contacts → |
“Femwell Group Health is Florida’s leading management services organization (MSO) providing cost-effective business solutions so physicians can efficiently and profitably run their…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Healthscope Benefitshealthscopebenefits.com HQ: Little Rock, AR, United StatesReported employees: 501-1,000 | Little Rock, AR, United States | 501-1,000 | Exact match | 312 contacts → |
“HealthSCOPE Benefits is a full service claims administration and health management firm providing administrative and other support services to self-funded employers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,222 company matches
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Administrative services organizations: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,212 records in the displayed employee bands.
10 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,222 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Administrative services organizations by metro
- Administrative services organizations in Houston62
- Administrative services organizations in Atlanta61
- Administrative services organizations in New York60
- Administrative services organizations in Los Angeles35
- Administrative services organizations in Austin34
- Administrative services organizations in Chicago32
- Administrative services organizations in Denver31
- Administrative services organizations in Phoenix31
- Administrative services organizations in Miami29
- Administrative services organizations in Las Vegas28
- Administrative services organizations in Dallas27
- Administrative services organizations in San Diego26
- Administrative services organizations in Tampa26
Questions about this company list
What does Exact match mean for administrative services organizations?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many administrative services organizations did RevenueBase find based in the United States?
The saved snapshot records 3,222 matching company records, 66,264 tracked contacts and 25,918 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Administrative services organizations by geography
- Administrative services organizations based in Melbourne, Australia
- Administrative services organizations based in Sydney, Australia
- Administrative services organizations based in Rio De Janeiro, Brazil
- Administrative services organizations based in Sao Paulo, Brazil
- Administrative services organizations based in Toronto, Canada
- Administrative services organizations based in Paris, France
- Administrative services organizations based in Chennai, India
- Administrative services organizations based in Mexico City, Mexico
- Administrative services organizations based in Amsterdam, Netherlands
- Administrative services organizations based in Warsaw, Poland
- Administrative services organizations based in Johannesburg, South Africa
- Administrative services organizations based in Pretoria, South Africa
Cite this list
RevenueBase Data Team. Top 25 administrative services organizations based in the United States. Snapshot: November 6, 2026. https://revenuebase.ai/companies/administrative-services-organizations/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Administrative services organizations based in Melbourne, Australia
- Administrative services organizations based in Sydney, Australia
- Administrative services organizations based in Rio De Janeiro, Brazil
- Administrative services organizations based in Sao Paulo, Brazil
- Administrative services organizations based in Toronto, Canada
- Administrative services organizations based in Paris, France