Company lists · Data refreshed September 2026
Top 25 Walk-in clinics based in the United States
RevenueBase identified 2,027 walk-in clinics headquartered in the United States as of September 2026 and tracks 51,291 professional contacts across them, including 9,131 with verified work emails. Houston is the largest hub.
This list covers walk-in clinics headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 walk-in clinics based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,136 contacts → | ||||
Indirect evidence “Founded by a physician in 1981, Patient First provides non-appointment urgent care for routine injuries and illnesses as well as primary care for patients who do not have a…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,740 contacts → | ||||
Partial evidence “With 900+ MinuteClinic medical clinics in local neighborhoods and virtual care options, we’re giving families greater access to quality care every day.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,609 contacts → | ||||
Indirect evidence “VillageMD provides high-quality, accessible healthcare services for individuals and communities across the United States, with primary, multi-specialty, and urgent care providers…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,353 contacts → | ||||
Indirect evidence “GoHealth partners with innovative and award-winning health systems to simplify and improve the way customers across the U.S.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,220 contacts → | ||||
Indirect evidence “Founded in Port Charlotte, Florida, in 2008, and now headquartered in Fort Myers, Millennium Physician Group is one of the largest comprehensive physician-led groups with more…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,110 contacts → | ||||
Indirect evidence “Carbon Health is a health technology company and modern healthcare provider that simplifies access to care through its EHR platform, locations with urgent and primary services…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,082 contacts → | ||||
Partial evidence “WellNow Urgent Care is one of the fastest-growing providers of urgent medical care, virtual care, occupational health services and clinical research in the United States.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,065 contacts → | ||||
Indirect evidence “Starting with a single location in Alabama in 1982, American Family Care (AFC) has pioneered the concept of non–emergency room urgent care.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,009 contacts → | ||||
Partial evidence “Fast Pace Urgent Care clinics provide treatments for a wide range of illnesses, injuries, and common conditions and provide a variety of wellness, diagnostic and screening…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 895 contacts → | ||||
Indirect evidence “At NextCare, we believe exceptional care starts with exceptional people.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 849 contacts → | ||||
Partial evidence “The Little Clinic provides high quality, affordable healthcare located in convenient retail settings.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 790 contacts → | ||||
Indirect evidence “CareNow® is dedicated to reducing your wait while improving your health.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 735 contacts → | ||||
Indirect evidence “FastMed is one of the largest urgent care providers in North Carolina.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 591 contacts → | ||||
Indirect evidence “At ConvenientMD we’re on a mission to make good health more convenient for all.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 537 contacts → | ||||
Indirect evidence “Welcome to our page!” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 535 contacts → | ||||
Indirect evidence “CONCENTRA WELCOMES U.S.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 514 contacts → | ||||
Partial evidence “Founded in 2006 by two doctors and a belief that everyone deserves better healthcare, we opened the first ZoomCare clinic outside of Portland, Oregon, on the second floor of a…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 486 contacts → | ||||
Partial evidence “110+ state-of-the-art urgent care clinics in Florida.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 379 contacts → | ||||
Indirect evidence “To learn more about CareSpot or to find a location near you, visit CareSpot proudly serves communities across Florida with a commitment to improving how people experience…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 351 contacts → | ||||
Indirect evidence “Physicians Immediate Care, also known as Physicians Urgent Care, is a Midwest leader in urgent care and occupational health services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 344 contacts → | ||||
Indirect evidence “Phishing Alert- Exer has recently been made aware of a phishing scam using our name and logo.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 330 contacts → | ||||
Indirect evidence “Total Access Urgent Care (TAUC) has been proudly providing top-ranked patient care for St.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 319 contacts → | ||||
Indirect evidence “Sollis exists for those who believe healthcare should feel different.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 310 contacts → | ||||
Indirect evidence “At Next Level, we treat people of all ages for conditions that need immediate attention but are not life-threatening.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 309 contacts → | ||||
Indirect evidence “At Primary Health Medical Group, we're committed to providing our patients with high-quality, comprehensive, convenient and friendly urgent care and family medicine services.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: walk-in clinics. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names walk-in clinics.
- Partial evidence
- Its own public description names part of walk-in clinics, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name walk-in clinics. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 2,027 walk-in clinics based in the United States
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Walk-in clinics based in the United States at a glance
As of Sep 22, 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 2,027 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among walk-in clinics, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “walk-in clinics”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names walk-in clinics), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among walk-in clinics, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 9,131 across the full list. 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 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Walk-in clinics by metro
- Walk-in clinics in Houston45
- Walk-in clinics in New York31
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names walk-in clinics, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many walk-in clinics are there based in the United States?
RevenueBase identified 2,027 walk-in clinics headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Patient First, headquartered in Glen Allen, tops this list with the largest team on record.
Which city has the most walk-in clinics?
Houston leads with 45 headquartered companies, followed by New York (31) and Dallas (15).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,131 verified decision-maker contacts tracked across these 2,027 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.
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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 Smart Search, 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.