Company lists · Data refreshed September 2026
Top 25 Administrative services outsourcing companies based in the United States
RevenueBase identified 1,101 company matches for administrative services outsourcing companies associated with the United States as of September 2026 and tracks 18,806 professional contacts across them, including 3,880 with verified work emails. New York is the largest hub.
This list covers company matches for administrative services outsourcing companies 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 September 27, 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 outsourcing companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 974 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 · Sep 27, 2026 · View company records in RevenueBase | |||||
| 2 | 635 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 · Sep 27, 2026 · View company records in RevenueBase | |||||
| 3 | 586 contacts → | ||||
Exact match “CoAdvantage is now CoAd.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 4 | 535 contacts → | ||||
Exact match “We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 5 | 490 contacts → | ||||
Exact match “OBM is a leading business process management company in UAE which provides client driven business management solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 6 | 447 contacts → | ||||
Exact match “Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 7 | 297 contacts → | ||||
Exact match “CogNet is a leading Business Process Management (BPM) company supporting our partners in the Human Resource Services industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 8 | 275 contacts → | ||||
Exact match “Managed Labor Solutions (MLS) is a unique provider of outsourced labor to companies large and small.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 9 | 201 contacts → | ||||
Exact match “Seibels offers the Property and Casualty Insurance industry and Financial Services industry business process outsourcing (BPO) services, and third-party administration (TPA)…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 10 | 193 contacts → | ||||
Exact match “GuideWell Source is a leading administrative services company providing full-service, administrative business solutions for health programs.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 11 | 187 contacts → | ||||
Exact match “We are a leading global outsourcing services company with highly skilled professionals working for our clients and partners.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 12 | 184 contacts → | ||||
Exact match “Servicios Contables is an Executive Office company located in 115 Parker Rd, Houston, Texas, United States.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 13 | 165 contacts → | ||||
Exact match “HR Works is a human resource management outsourcing company serving clients throughout the United States.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 14 | 149 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 15 | 133 contacts → | ||||
Exact match “Global Virtuoso is a multi-disciplined outsourcing company that specializes in business services for aviation, healthcare & medical, and finance and accounting.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 16 | 126 contacts → | ||||
Exact match “Whether growing a client relationship, helping a customer select the right insurance product or designing a customer-facing web application, we look to the talent of our diverse…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 17 | 123 contacts → | ||||
Exact match “Avitus Group is a worldwide company that simplifies, strengthens and grows businesses by providing administrative support (Payroll, accounting, taxes, HR and much more.) When a…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 18 | 109 contacts → | ||||
Exact match “rvices to supplement your development effortess problems while enabling new competitive advantages and delivering tangible value.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 19 | 104 contacts → | ||||
Exact match “driasi is a leading provider of outsourced administrative solutions tailored to the insurance industry, and a preferred partner to many of North America's best-known brands.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 20 | 96 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 21 | 90 contacts → | ||||
Exact match “A company that provides business services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 22 | 89 contacts → | ||||
Exact match “Infiniti HR provides human resources outsourcing services to the small to mid-sized business market, including payroll, human resource compliance, employee benefits services and…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 23 | 87 contacts → | ||||
Exact match “DecisionHR is a full-service human resource outsourcing company serving small and mid-sized businesses nationwide.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 24 | 82 contacts → | ||||
Exact match “Cobalt MedPlans is an outsourcing partner with core competencies in high end Claims Administration and Contact Center services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 25 | 81 contacts → | ||||
Exact match “In 2022, as businesses worldwide faced growing pressures, we realized that the biggest challenge wasn’t lack of talent or ideas-it was lack of support.” Recorded in the RevenueBase company graph · Sep 27, 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 outsourcing companies”. 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 1,101 administrative services outsourcing companies based in the United States
See the full list, filter by size, metro and specialty, and access 3,880 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Administrative services outsourcing companies based in the United States at a glance
As of Sep 27, 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 1,101 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 outsourcing companies” 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 3,880 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 September 27, 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.
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 outsourcing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many administrative services outsourcing companies are there based in the United States?
RevenueBase identified 1,101 company matches for administrative services outsourcing companies associated with the United States as of September 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?
NASCO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most administrative services outsourcing companies?
New York leads with 26 company records, followed by Houston (25) and Atlanta (19).
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 3,880 professional contacts with verified work emails tracked across these 1,101 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 September 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,101 administrative services outsourcing companies based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Administrative services outsourcing companies by geography
- Administrative services outsourcing companies based in Australia
- Administrative services outsourcing companies based in Belgium
- Administrative services outsourcing companies based in Brazil
- Administrative services outsourcing companies based in Canada
- Administrative services outsourcing companies based in Chile
- Administrative services outsourcing companies based in Colombia
- Administrative services outsourcing companies based in Denmark
- Administrative services outsourcing companies based in France
- Administrative services outsourcing companies based in Germany
- Administrative services outsourcing companies based in India
- Administrative services outsourcing companies based in Italy
- Administrative services outsourcing companies based in Mexico
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 outsourcing companies based in Australia
- Administrative services outsourcing companies based in Belgium
- Administrative services outsourcing companies based in Brazil
- Administrative services outsourcing companies based in Canada
- Administrative services outsourcing companies based in Chile
- Administrative services outsourcing companies based in Colombia
Company intelligence · public preview
Top 25 administrative services outsourcing companies 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 1,101 matching company records for administrative services outsourcing companies based in the United States, with 18,806 tracked contacts and 3,880 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: September 27, 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 outsourcing companies 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 |  NASCOnasco.comHQ: Atlanta, GA, United StatesReported employees: 201-500 | Atlanta, GA, United States | 201-500 | Exact match | 974 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 · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Medica Health Managementmedicahealth.comHQ: Southlake, TX, United StatesReported employees: 201-500 | Southlake, TX, United States | 201-500 | Exact match | 635 contacts → |
“Medica Health Management provides comprehensive business management services, including: clinical, financial, administrative, human resources and marketing to Home Health and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Coadvantagecoad.comHQ: Bradenton, FL, United StatesReported employees: 201-500 | Bradenton, FL, United States | 201-500 | Exact match | 586 contacts → |
“CoAdvantage is now CoAd.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Group Management Services, INCgroupmgmt.comHQ: Richfield, OH, United StatesReported employees: 501-1,000 | Richfield, OH, United States | 501-1,000 | Exact match | 535 contacts → |
“We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  OWN Business Managementobmworldwide.comHQ: Ajman Free Zone, United StatesReported employees: Not recorded | Ajman Free Zone, United States | Not recorded | Exact match | 490 contacts → |
“OBM is a leading business process management company in UAE which provides client driven business management solutions.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Velan Info Servicesvelaninfo.comHQ: Dover, DE, United StatesReported employees: 201-500 | Dover, DE, United States | 201-500 | Exact match | 447 contacts → |
“Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Cognetcognethro.comHQ: Orlando, FL, United StatesReported employees: 501-1,000 | Orlando, FL, United States | 501-1,000 | Exact match | 297 contacts → |
“CogNet is a leading Business Process Management (BPM) company supporting our partners in the Human Resource Services industry.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Managed Labor Solutionsmanagedlabor.netHQ: Allentown, PA, United StatesReported employees: 1,001-5,000 | Allentown, PA, United States | 1,001-5,000 | Exact match | 275 contacts → |
“Managed Labor Solutions (MLS) is a unique provider of outsourced labor to companies large and small.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Seibelsseibels.comHQ: Columbia, SC, United StatesReported employees: 51-200 | Columbia, SC, United States | 51-200 | Exact match | 201 contacts → |
“Seibels offers the Property and Casualty Insurance industry and Financial Services industry business process outsourcing (BPO) services, and third-party administration (TPA)…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Guidewell Sourceguidewellsource.comHQ: Jacksonville, United StatesReported employees: 1,001-5,000 | Jacksonville, United States | 1,001-5,000 | Exact match | 193 contacts → |
“GuideWell Source is a leading administrative services company providing full-service, administrative business solutions for health programs.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Moksh Techmokshtech.netHQ: Lake Hiawatha, NJ, United StatesReported employees: 201-500 | Lake Hiawatha, NJ, United States | 201-500 | Exact match | 187 contacts → |
“We are a leading global outsourcing services company with highly skilled professionals working for our clients and partners.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Servicios Contablessccalop.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 184 contacts → |
“Servicios Contables is an Executive Office company located in 115 Parker Rd, Houston, Texas, United States.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HR Workshrworks-inc.com HQ: Fairport, NY, United StatesReported employees: 51-200 | Fairport, NY, United States | 51-200 | Exact match | 165 contacts → |
“HR Works is a human resource management outsourcing company serving clients throughout the United States.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Insource Services, INCinsourceservices.com HQ: Wellesley, MA, United StatesReported employees: 51-200 | Wellesley, MA, United States | 51-200 | Exact match | 149 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 |  Global Virtuosoglobalvirtuoso.comHQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 133 contacts → |
“Global Virtuoso is a multi-disciplined outsourcing company that specializes in business services for aviation, healthcare & medical, and finance and accounting.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Selman & Companyselmanco.com HQ: Cleveland, OH, United StatesReported employees: 51-200 | Cleveland, OH, United States | 51-200 | Exact match | 126 contacts → |
“Whether growing a client relationship, helping a customer select the right insurance product or designing a customer-facing web application, we look to the talent of our diverse…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Avitus Groupavitusgroup.comHQ: Billings, MT, United StatesReported employees: 201-500 | Billings, MT, United States | 201-500 | Exact match | 123 contacts → |
“Avitus Group is a worldwide company that simplifies, strengthens and grows businesses by providing administrative support (Payroll, accounting, taxes, HR and much more.) When a…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  CSC Beyondcscbeyond.comHQ: North Carolina, United StatesReported employees: 51-200 | North Carolina, United States | 51-200 | Exact match | 109 contacts → |
“rvices to supplement your development effortess problems while enabling new competitive advantages and delivering tangible value.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Driasidriasi.comHQ: Chanhassen, MN, United StatesReported employees: 51-200 | Chanhassen, MN, United States | 51-200 | Exact match | 104 contacts → |
“driasi is a leading provider of outsourced administrative solutions tailored to the insurance industry, and a preferred partner to many of North America's best-known brands.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  TDS Global Solutionstdsgs.comHQ: Broadview Heights, OH, United StatesReported employees: 51-200 | Broadview Heights, OH, United States | 51-200 | Exact match | 96 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 |  Clutch Groupmoraeglobal.comHQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 90 contacts → |
“A company that provides business services.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Infiniti HRinfinitihr.comHQ: Columbia, MD, United StatesReported employees: Not recorded | Columbia, MD, United States | Not recorded | Exact match | 89 contacts → |
“Infiniti HR provides human resources outsourcing services to the small to mid-sized business market, including payroll, human resource compliance, employee benefits services and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Decisionhrdecisionhr.comHQ: St. Petersburg, FL, United StatesReported employees: 201-500 | St. Petersburg, FL, United States | 201-500 | Exact match | 87 contacts → |
“DecisionHR is a full-service human resource outsourcing company serving small and mid-sized businesses nationwide.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Cobalt Medplanscobaltmedplans.comHQ: Overland Park, KS, United StatesReported employees: 201-500 | Overland Park, KS, United States | 201-500 | Exact match | 82 contacts → |
“Cobalt MedPlans is an outsourcing partner with core competencies in high end Claims Administration and Contact Center services.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Yuvii Consultancy Private Limitedyuviiconsultancy.com HQ: Acworth, GA, United StatesReported employees: 51-200 | Acworth, GA, United States | 51-200 | Exact match | 81 contacts → |
“In 2022, as businesses worldwide faced growing pressures, we realized that the biggest challenge wasn’t lack of talent or ideas-it was lack of support.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,101 company matches
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Administrative services outsourcing companies: dataset insights
September 27, 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
1,100 records in the displayed employee bands.
1 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 1,101 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: September 27, 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 ↗
Questions about this company list
What does Exact match mean for administrative services outsourcing companies?
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 outsourcing companies did RevenueBase find based in the United States?
The saved snapshot records 1,101 matching company records, 18,806 tracked contacts and 3,880 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: September 27, 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 outsourcing companies by geography
- Administrative services outsourcing companies based in Australia
- Administrative services outsourcing companies based in Belgium
- Administrative services outsourcing companies based in Brazil
- Administrative services outsourcing companies based in Canada
- Administrative services outsourcing companies based in Chile
- Administrative services outsourcing companies based in Colombia
- Administrative services outsourcing companies based in Denmark
- Administrative services outsourcing companies based in France
- Administrative services outsourcing companies based in Germany
- Administrative services outsourcing companies based in India
- Administrative services outsourcing companies based in Italy
- Administrative services outsourcing companies based in Mexico
Cite this list
RevenueBase Data Team. Top 25 administrative services outsourcing companies based in the United States. Snapshot: September 27, 2026. https://revenuebase.ai/companies/administrative-services-outsourcing-companies/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 outsourcing companies based in Australia
- Administrative services outsourcing companies based in Belgium
- Administrative services outsourcing companies based in Brazil
- Administrative services outsourcing companies based in Canada
- Administrative services outsourcing companies based in Chile
- Administrative services outsourcing companies based in Colombia
Company intelligence · public preview
Top 25 administrative services outsourcing companies based in the United States
RevenueBase records 1,101 matching company records for administrative services outsourcing companies based in the United States, with 18,806 tracked contacts and 3,880 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: September 27, 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 outsourcing companies 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 | NASCOnasco.com HQ: Atlanta, GA, United StatesReported employees: 201-500 | Atlanta, GA, United States | 201-500 | Exact match | 974 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 · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Medica Health Managementmedicahealth.com HQ: Southlake, TX, United StatesReported employees: 201-500 | Southlake, TX, United States | 201-500 | Exact match | 635 contacts → |
“Medica Health Management provides comprehensive business management services, including: clinical, financial, administrative, human resources and marketing to Home Health and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Coadvantagecoad.com HQ: Bradenton, FL, United StatesReported employees: 201-500 | Bradenton, FL, United States | 201-500 | Exact match | 586 contacts → |
“CoAdvantage is now CoAd.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Group Management Services, INCgroupmgmt.com HQ: Richfield, OH, United StatesReported employees: 501-1,000 | Richfield, OH, United States | 501-1,000 | Exact match | 535 contacts → |
“We provide comprehensive HR solutions to companies of all sizes throughout the United States.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | OWN Business Managementobmworldwide.com HQ: Ajman Free Zone, United StatesReported employees: Not recorded | Ajman Free Zone, United States | Not recorded | Exact match | 490 contacts → |
“OBM is a leading business process management company in UAE which provides client driven business management solutions.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Velan Info Servicesvelaninfo.com HQ: Dover, DE, United StatesReported employees: 201-500 | Dover, DE, United States | 201-500 | Exact match | 447 contacts → |
“Velan Info Services is a leading multidisciplinary service provider with its clients across the globe.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Cognetcognethro.com HQ: Orlando, FL, United StatesReported employees: 501-1,000 | Orlando, FL, United States | 501-1,000 | Exact match | 297 contacts → |
“CogNet is a leading Business Process Management (BPM) company supporting our partners in the Human Resource Services industry.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Managed Labor Solutionsmanagedlabor.net HQ: Allentown, PA, United StatesReported employees: 1,001-5,000 | Allentown, PA, United States | 1,001-5,000 | Exact match | 275 contacts → |
“Managed Labor Solutions (MLS) is a unique provider of outsourced labor to companies large and small.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Seibelsseibels.com HQ: Columbia, SC, United StatesReported employees: 51-200 | Columbia, SC, United States | 51-200 | Exact match | 201 contacts → |
“Seibels offers the Property and Casualty Insurance industry and Financial Services industry business process outsourcing (BPO) services, and third-party administration (TPA)…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Guidewell Sourceguidewellsource.com HQ: Jacksonville, United StatesReported employees: 1,001-5,000 | Jacksonville, United States | 1,001-5,000 | Exact match | 193 contacts → |
“GuideWell Source is a leading administrative services company providing full-service, administrative business solutions for health programs.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Moksh Techmokshtech.net HQ: Lake Hiawatha, NJ, United StatesReported employees: 201-500 | Lake Hiawatha, NJ, United States | 201-500 | Exact match | 187 contacts → |
“We are a leading global outsourcing services company with highly skilled professionals working for our clients and partners.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Servicios Contablessccalop.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 184 contacts → |
“Servicios Contables is an Executive Office company located in 115 Parker Rd, Houston, Texas, United States.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HR Workshrworks-inc.com HQ: Fairport, NY, United StatesReported employees: 51-200 | Fairport, NY, United States | 51-200 | Exact match | 165 contacts → |
“HR Works is a human resource management outsourcing company serving clients throughout the United States.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Insource Services, INCinsourceservices.com HQ: Wellesley, MA, United StatesReported employees: 51-200 | Wellesley, MA, United States | 51-200 | Exact match | 149 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 15 | Global Virtuosoglobalvirtuoso.com HQ: Los Angeles, CA, United StatesReported employees: 51-200 | Los Angeles, CA, United States | 51-200 | Exact match | 133 contacts → |
“Global Virtuoso is a multi-disciplined outsourcing company that specializes in business services for aviation, healthcare & medical, and finance and accounting.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Selman & Companyselmanco.com HQ: Cleveland, OH, United StatesReported employees: 51-200 | Cleveland, OH, United States | 51-200 | Exact match | 126 contacts → |
“Whether growing a client relationship, helping a customer select the right insurance product or designing a customer-facing web application, we look to the talent of our diverse…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Avitus Groupavitusgroup.com HQ: Billings, MT, United StatesReported employees: 201-500 | Billings, MT, United States | 201-500 | Exact match | 123 contacts → |
“Avitus Group is a worldwide company that simplifies, strengthens and grows businesses by providing administrative support (Payroll, accounting, taxes, HR and much more.) When a…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | CSC Beyondcscbeyond.com HQ: North Carolina, United StatesReported employees: 51-200 | North Carolina, United States | 51-200 | Exact match | 109 contacts → |
“rvices to supplement your development effortess problems while enabling new competitive advantages and delivering tangible value.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Driasidriasi.com HQ: Chanhassen, MN, United StatesReported employees: 51-200 | Chanhassen, MN, United States | 51-200 | Exact match | 104 contacts → |
“driasi is a leading provider of outsourced administrative solutions tailored to the insurance industry, and a preferred partner to many of North America's best-known brands.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | TDS Global Solutionstdsgs.com HQ: Broadview Heights, OH, United StatesReported employees: 51-200 | Broadview Heights, OH, United States | 51-200 | Exact match | 96 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Clutch Groupmoraeglobal.com HQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 90 contacts → |
“A company that provides business services.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Infiniti HRinfinitihr.com HQ: Columbia, MD, United StatesReported employees: Not recorded | Columbia, MD, United States | Not recorded | Exact match | 89 contacts → |
“Infiniti HR provides human resources outsourcing services to the small to mid-sized business market, including payroll, human resource compliance, employee benefits services and…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Decisionhrdecisionhr.com HQ: St. Petersburg, FL, United StatesReported employees: 201-500 | St. Petersburg, FL, United States | 201-500 | Exact match | 87 contacts → |
“DecisionHR is a full-service human resource outsourcing company serving small and mid-sized businesses nationwide.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Cobalt Medplanscobaltmedplans.com HQ: Overland Park, KS, United StatesReported employees: 201-500 | Overland Park, KS, United States | 201-500 | Exact match | 82 contacts → |
“Cobalt MedPlans is an outsourcing partner with core competencies in high end Claims Administration and Contact Center services.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Yuvii Consultancy Private Limitedyuviiconsultancy.com HQ: Acworth, GA, United StatesReported employees: 51-200 | Acworth, GA, United States | 51-200 | Exact match | 81 contacts → |
“In 2022, as businesses worldwide faced growing pressures, we realized that the biggest challenge wasn’t lack of talent or ideas-it was lack of support.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Administrative services outsourcing companies: dataset insights
September 27, 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
1,100 records in the displayed employee bands.
1 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 1,101 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: September 27, 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 ↗
Questions about this company list
What does Exact match mean for administrative services outsourcing companies?
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 outsourcing companies did RevenueBase find based in the United States?
The saved snapshot records 1,101 matching company records, 18,806 tracked contacts and 3,880 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: September 27, 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 outsourcing companies by geography
- Administrative services outsourcing companies based in Australia
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- Administrative services outsourcing companies based in Brazil
- Administrative services outsourcing companies based in Canada
- Administrative services outsourcing companies based in Chile
- Administrative services outsourcing companies based in Colombia
- Administrative services outsourcing companies based in Denmark
- Administrative services outsourcing companies based in France
- Administrative services outsourcing companies based in Germany
- Administrative services outsourcing companies based in India
- Administrative services outsourcing companies based in Italy
- Administrative services outsourcing companies based in Mexico
Cite this list
RevenueBase Data Team. Top 25 administrative services outsourcing companies based in the United States. Snapshot: September 27, 2026. https://revenuebase.ai/companies/administrative-services-outsourcing-companies/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 outsourcing companies based in Australia
- Administrative services outsourcing companies based in Belgium
- Administrative services outsourcing companies based in Brazil
- Administrative services outsourcing companies based in Canada
- Administrative services outsourcing companies based in Chile
- Administrative services outsourcing companies based in Colombia