NAICS 621999 Quarterly Industry Report
All Other Miscellaneous Ambulatory Health Care Services
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 621999Sector: Health Care and Social Assistance (62)Updated: Q1 2026
About This Report
This industry profile for All Other Miscellaneous Ambulatory Health Care Services (NAICS 621999) draws on data from the U.S. Census Bureau[6], Bureau of Labor Statistics[8], CMS[9], and SBA size standards database[7]. Published by Fair Market Value and updated quarterly, it provides valuation professionals, healthcare analysts, and wellness industry investors with current market data. All quantitative claims are sourced to publicly verifiable databases.
Industry Snapshot
Key metrics for the all other miscellaneous ambulatory health care services industry.
NAICS Sector
62
Health Care and Social Assistance
Industry Definition & Overview
All Other Miscellaneous Ambulatory Health Care Services (NAICS 621999) encompasses establishments primarily engaged in providing ambulatory health care services not classified elsewhere per the U.S. Census Bureau[5]. Covered services include health screening programs, physical fitness evaluation, hearing testing services, smoking cessation programs, and other miscellaneous outpatient health care activities that do not fit within physician offices, dental offices, outpatient care centers, laboratories, home health, ambulance, or blood bank classifications.
This catch-all classification covers a diverse range of health service providers with varying market sizes and business models per Census Bureau[6] economic survey data. Telehealth-enabled health screening and wellness assessment services have grown rapidly, with Medicare extending core telehealth provisions through September 2025. Mobile health screening units, corporate wellness program operators, and community health assessment services represent growing segments within this classification.
Per the SBA Table of Size Standards[7], the size standard is $20.5 million in average annual receipts. Regulatory requirements vary by specific service type, with CLIA certification required for establishments performing any clinical laboratory testing. State professional licensing governs medical staff conducting health assessments and screenings. HIPAA compliance applies to all establishments handling protected health information. Hybrid care models blending virtual and in-person health assessment consultations are becoming standard, with wearable health monitoring devices enabling patients to share fitness and biometric data with providers for remote evaluation.
What's Included in This Industry
- Health screening and preventive assessment programs
- Physical fitness evaluation and exercise testing services
- Hearing testing and audiometric screening services
- Smoking cessation program delivery and counseling
- Mobile health screening unit operations
- Corporate wellness program management and delivery
- Community health assessment and survey services
- Biometric screening and health risk appraisal programs
- Sleep disorder testing and polysomnography services
- Genetic counseling and hereditary risk assessment
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Sector | Health Care and Social Assistance | 62 |
| Subsector | Ambulatory Health Care Services | 621 |
| Industry Group | Other Ambulatory Health Care Services | 6219 |
| NAICS Industry | All Other Ambulatory Health Care Services | 62199 |
| National Industry | All Other Miscellaneous Ambulatory Health Care Services | 621999 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 621498 | All Other Outpatient Care Centers | All Other Outpatient Care Centers provide walk-in and urgent care medical services that overlap with some health screening and assessment activities in this classification, with both categories serving patients outside traditional physician office settings |
| 621511 | Medical Laboratories | Medical Laboratories perform clinical testing that supports health screening programs in this classification, with laboratory analysis of blood samples and biometric specimens representing a key service component of corporate wellness and community screening events |
| 621512 | Diagnostic Imaging Centers | Diagnostic Imaging Centers provide imaging services that complement health screening programs, with mammography screening, bone density testing, and cardiac imaging referrals linking screening assessments to diagnostic follow-up care |
| 621111 | Offices of Physicians (except Mental Health Specialists) | Offices of Physicians (General) serve as referral destinations for patients identified through health screening programs, with abnormal screening results generating physician office visits for diagnostic evaluation and treatment planning |
| 621610 | Home Health Care Services | Home Health Care Services deliver health monitoring and assessment in patient homes that overlaps with remote health evaluation services in this classification, with telehealth and wearable device monitoring creating care delivery parallels |
| 621910 | Ambulance Services | Ambulance Services include community paramedicine and mobile integrated health programs that share the population health screening mission with mobile health assessment services in this classification |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | California | 14.2% | 1,284 |
| 2 | Texas | 9.4% | 845 |
| 3 | Florida | 9.3% | 842 |
| 4 | New York | 6.0% | 538 |
| 5 | Georgia | 3.8% | 344 |
| 6 | Illinois | 3.4% | 310 |
| 7 | Michigan | 3.3% | 296 |
| 8 | Pennsylvania | 3.2% | 288 |
| 9 | New Jersey | 2.9% | 262 |
| 10 | North Carolina | 2.6% | 232 |
% Of Establishments
0%
14%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
416
Total SBA Loans
$121.5M
Total Loan Volume
$292K
Average Loan Size
10 yrs
Average Loan Term
10.40%
Average Interest Rate
3,488
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 Miscellaneous Ambulatory Health Care Services (NAICS 621999) has a size standard of $20.5 million in average annual receipts for federal contracting purposes. SBA lending programs[10] support facility acquisition, screening equipment investment, and service expansion for qualifying ambulatory health care operators. Eligible businesses can access SBA 7(a) loans[11] for working capital, equipment, and acquisition financing, while 504 loans[12] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | Northeast Bank | 88 | $22.2M | $252K |
| 2 | TD Bank, National Association | 16 | $20.4M | $1.3M |
| 3 | First Internet Bank of Indiana | 8 | $12.8M | $1.6M |
| 4 | Newtek Bank, National Association | 8 | $12.0M | $1.5M |
| 5 | JPMorgan Chase Bank, National Association | 16 | $8.0M | $500K |
Frequently Asked Questions
Common questions about this industry.
What is the NAICS code for health screening services?
NAICS 621999 covers all other miscellaneous ambulatory health care services including health screening, physical fitness evaluation, hearing testing, and smoking cessation programs per the U.S. Census Bureau[5].
What is the SBA size standard for miscellaneous ambulatory health care?
The SBA size standard[7] is $20.5 million in average annual receipts, determining eligibility for federal small business contracting programs and SBA lending products.
What licensing applies to health screening providers?
CLIA certification from CMS[9] is required for any clinical laboratory testing performed during health screenings, with state professional licensing governing medical personnel conducting assessments and evaluations.
Are telehealth provisions affecting this industry?
Medicare extended core telehealth provisions through September 2025 per CMS[9] policy updates, with expanded provider eligibility and originating site definitions supporting virtual health assessment and screening service delivery.
What types of businesses fall under this classification?
This catch-all classification covers health screening programs, physical fitness evaluators, hearing testing services, smoking cessation providers, mobile health units, corporate wellness operators, and other ambulatory health services not classified elsewhere per the U.S. Census Bureau[5].
How does HIPAA apply to health screening services?
HIPAA compliance applies to all establishments handling protected health information per HHS[13] regulatory guidance, including health screening programs that collect, process, or store patient biometric data and medical records.
What is driving growth in corporate wellness programs?
Employer investment in preventive health services, wearable health monitoring technology, and hybrid care models blending virtual and in-person assessments are driving growth per Bureau of Labor Statistics[8] ambulatory health industry data.
Do mobile health screening units require special licensing?
Mobile health screening units must comply with state health department licensing for the specific services provided, with CLIA certification required for any on-site laboratory testing and state medical practice acts governing clinical assessment activities per CMS[9] regulatory requirements.
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]Census Bureau data.census.gov
- [7]SBA Table of Size Standards sba.gov
- [8]Bureau of Labor Statistics bls.gov
- [9]CMS cms.gov
- [10]SBA lending programs sba.gov
- [11]SBA 7(a) loans sba.gov
- [12]504 loans sba.gov
- [13]HHS hhs.gov
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