NAICS 621498 Quarterly Industry Report
All Other Outpatient Care Centers
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 621498Sector: Health Care and Social Assistance (62)Updated: Q1 2026
About This Report
This industry profile for All Other Outpatient Care Centers (NAICS 621498) draws on data from the U.S. Census Bureau[9], Bureau of Labor Statistics[10], Urgent Care Association[6], and SBA size standards database[7]. Published by Fair Market Value and updated quarterly, it provides valuation professionals, healthcare investors, and outpatient care analysts with current market data. All quantitative claims are sourced to publicly verifiable databases.
Industry Snapshot
Key metrics for the all other outpatient care centers industry.
NAICS Sector
62
Health Care and Social Assistance
Industry Definition & Overview
All Other Outpatient Care Centers (NAICS 621498) encompasses outpatient care centers not classified elsewhere, including urgent care centers, walk-in clinics, multi-specialty outpatient centers, and freestanding emergency rooms per the U.S. Census Bureau[5]. These centers provide medical services on an outpatient basis without the prepaid structure of HMOs or the surgical focus of ambulatory surgery centers.
Roughly 14,451 establishments employ 426,407 workers per Census data. Urgent care centers have doubled from 7,220 locations in 2014 to 14,382 in 2023, generating over 170 million visits annually per the Urgent Care Association[6]. CityMD (part of Summit Health), MedExpress (Optum), MinuteClinic (CVS Health), and AFC Urgent Care operate among the largest multi-site urgent care networks. Retail health clinics located within pharmacies and big-box stores continue expanding, with market growth estimated at 8.6 percent compound annual rate through 2030.
Per the SBA Table of Size Standards[7], the size standard is $22.5 million in average annual receipts. CLIA certification is required for centers performing laboratory testing per CMS[8] regulatory requirements. State professional licensing governs medical staff, and CMS participation standards apply for facilities accepting Medicare patients. Occupational health services, employer-contracted wellness programs, and on-site corporate clinics represent a growing segment within this classification. AI-assisted triage and patient intake systems are being adopted by larger urgent care chains to reduce wait times and improve clinical workflow efficiency.
What's Included in This Industry
- Urgent care center walk-in medical treatment services
- Retail health clinic vaccination and screening programs
- Freestanding emergency room acute care services
- Occupational health and employer wellness programs
- Multi-specialty outpatient diagnostic and treatment centers
- Travel medicine and immunization clinic services
- Sports medicine and athletic injury treatment centers
- After-hours and weekend medical care delivery
- On-site corporate clinic health services
- Telehealth triage and virtual urgent care consultations
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Sector | Health Care and Social Assistance | 62 |
| Subsector | Ambulatory Health Care Services | 621 |
| Industry Group | Outpatient Care Centers | 6214 |
| NAICS Industry | Other Outpatient Care Centers | 62149 |
| National Industry | All Other Outpatient Care Centers | 621498 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 621111 | Offices of Physicians (except Mental Health Specialists) | Offices of Physicians (General) provide scheduled primary care that urgent care and walk-in clinics supplement for after-hours, weekend, and non-appointment acute medical needs, with both settings competing for minor illness and injury patient volume |
| 622110 | General Medical and Surgical Hospitals | General Medical and Surgical Hospitals operate emergency departments that handle higher-acuity cases than urgent care centers, with freestanding ERs in this classification bridging the gap between hospital emergency rooms and walk-in clinic capabilities |
| 621493 | Freestanding Ambulatory Surgical and Emergency Centers | Freestanding Ambulatory Surgical Centers provide outpatient surgical services that some multi-specialty outpatient centers in this classification also offer, with both settings delivering same-day procedures outside hospital operating room environments |
| 621491 | HMO Medical Centers | HMO Medical Centers provide integrated outpatient care under prepaid models that contrast with the fee-for-service walk-in approach of urgent care centers, though both serve similar patient populations seeking convenient same-day medical access |
| 621512 | Diagnostic Imaging Centers | Diagnostic Imaging Centers provide radiology services that urgent care and outpatient centers rely on for diagnostic workup, with many larger urgent care facilities incorporating on-site X-ray and point-of-care imaging capabilities |
| 621610 | Home Health Care Services | Home Health Care Services provide follow-up care for patients initially treated at urgent care and outpatient centers, with home health referrals supporting recovery for patients unable to return to clinic settings for continued treatment |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | California | 12.9% | 2,717 |
| 2 | Florida | 9.2% | 1,927 |
| 3 | Texas | 8.0% | 1,673 |
| 4 | New York | 5.6% | 1,178 |
| 5 | Ohio | 3.5% | 727 |
| 6 | Illinois | 3.4% | 723 |
| 7 | Pennsylvania | 3.3% | 686 |
| 8 | Michigan | 2.9% | 605 |
| 9 | Wisconsin | 2.7% | 570 |
| 10 | North Carolina | 2.4% | 501 |
% Of Establishments
0%
13%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
736
Total SBA Loans
$373.3M
Total Loan Volume
$507K
Average Loan Size
12 yrs
Average Loan Term
9.87%
Average Interest Rate
6,800
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: Per the SBA Table of Size Standards[7], All Other Outpatient Care Centers (NAICS 621498) has a size standard of $22.5 million in average annual receipts for federal contracting purposes. SBA lending programs[11] support facility acquisition, medical equipment investment, and clinic expansion for qualifying outpatient care center operators. Eligible businesses can access SBA 7(a) loans[12] for working capital, equipment, and acquisition financing, while 504 loans[13] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | First Bank & Trust | 8 | $38.3M | $4.8M |
| 2 | The Huntington National Bank | 112 | $35.1M | $313K |
| 3 | Old National Bank | 16 | $27.8M | $1.7M |
| 4 | Cadence Bank | 24 | $27.8M | $1.2M |
| 5 | First Internet Bank of Indiana | 16 | $25.7M | $1.6M |
Frequently Asked Questions
Common questions about this industry.
What is the NAICS code for urgent care centers?
NAICS 621498 covers all other outpatient care centers including urgent care centers, walk-in clinics, freestanding ERs, and multi-specialty outpatient facilities per the U.S. Census Bureau[5].
How many urgent care centers operate in the U.S.?
Urgent care centers doubled from 7,220 locations in 2014 to 14,382 in 2023, generating over 170 million visits annually per the Urgent Care Association[6], with continued expansion projected.
What is the SBA size standard for outpatient care centers?
The SBA size standard[7] is $22.5 million in average annual receipts, determining eligibility for federal small business contracting programs and SBA lending products.
How fast is the urgent care market growing?
Market growth is estimated at 8.6 percent compound annual rate through 2030 per healthcare market research data, driven by consumer demand for convenient access and lower costs compared to hospital emergency departments.
Who operates the largest urgent care networks?
CityMD (Summit Health), MedExpress (Optum), MinuteClinic (CVS Health), and AFC Urgent Care operate among the largest multi-site networks per the Urgent Care Association[6], with health system and private equity ownership accelerating consolidation.
What regulations apply to urgent care centers?
CLIA certification is required for laboratory testing per CMS[8] regulatory requirements, with state professional licensing governing medical staff and CMS participation standards applying for facilities accepting Medicare patients.
How do urgent care centers compare to emergency rooms?
Urgent care centers treat non-life-threatening conditions at lower cost than hospital emergency departments, with average visit costs of $150 to $250 compared to $1,000 or more for ER visits per Bureau of Labor Statistics[10] healthcare pricing data.
Are retail health clinics part of this classification?
Retail health clinics located within pharmacies and big-box stores fall within NAICS 621498 and continue expanding, with MinuteClinic (CVS Health) and similar operators providing vaccination, screening, and minor treatment services in convenient retail locations.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]U.S. Census Bureau census.gov
- [6]Urgent Care Association ucaoa.org
- [7]SBA Table of Size Standards sba.gov
- [8]CMS cms.gov
- [9]U.S. Census Bureau data.census.gov
- [10]Bureau of Labor Statistics bls.gov
- [11]SBA lending programs sba.gov
- [12]SBA 7(a) loans sba.gov
- [13]504 loans sba.gov
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