621399

Offices of All Other Miscellaneous Health Practitioners

Health Care and Social Assistance › Ambulatory Health Care Services › Offices of Other Health Practitioners

SBA Size Standard

$10M average annual receipts

Revenue-Based Verify at SBA.gov →

NAICS Code Hierarchy

62

Sector

Health Care and Social Assistance

621

Subsector

Ambulatory Health Care Services

6213

Industry Group

Offices of Other Health Practitioners

621399

National Industry (This Code)

Offices of All Other Miscellaneous Health Practitioners

Official NAICS Description

Source: U.S. Census Bureau 2022 NAICS

📘 Source: U.S. Census Bureau — 2022 NAICS Manual
This U.S. industry comprises establishments of independent health practitioners (except physicians; dentists; chiropractors; optometrists; mental health specialists; physical, occupational, and speech therapists; audiologists; and podiatrists). These practitioners operate private or group practices in their own offices (e.g., centers, clinics) or in the facilities of others, such as hospitals or HMO medical centers. Illustrative Examples: Acupuncturists' (except MDs or DOs) offices Hypnotherapists' offices Dental hygienists' offices Inhalation or respiratory therapists' offices Denturists' offices Midwives' offices Dietitians' offices Naturopaths' offices Homeopaths' offices Registered or licensed practical nurses' offices

✓ Small Business Eligibility at a Glance

Based on SBA Table of Small Business Size Standards (2024)

Size Standard

$10M average annual receipts

Measurement Period

3-year average

Standard Type

Revenue-Based

Applies To

All contracts under NAICS 621399

Set-Aside Programs

8(a), WOSB, HUBZone, SDVOSB

Certification Required

No (self-certify in SAM.gov)

Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.

Cross-References

The following activities are classified elsewhere in the NAICS system:

The independent practice of medicine (i.e., physicians)--are classified in Industry 62111, Offices of Physicians;
The independent practice of dentistry--are classified in Industry 621210, Offices of Dentists;
The independent practice of chiropractic--are classified in Industry 621310, Offices of Chiropractors;
The independent practice of optometry--are classified in Industry 621320, Offices of Optometrists;
The independent practice of mental health (except physicians)--are classified in Industry 621330, Offices of Mental Health Practitioners (except Physicians);
The independent practice of physical, occupational, and speech therapy, and audiology--are classified in Industry 621340, Offices of Physical, Occupational and Speech Therapists, and Audiologists;
The independent practice of podiatry--are classified in U.S. Industry 621391, Offices of Podiatrists; and
Operating outpatient community health clinics with health practitioners from multiple industries--are classified in U.S. Industry 621498, All Other Outpatient Care Centers.

How to Use NAICS 621399 in SAM.gov

NAICS code 621399Offices of All Other Miscellaneous Health Practitioners — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Offices of Other Health Practitioners space will be able to find your business.

If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of $10M average annual receipts, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 621399.

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Frequently Asked Questions

What is NAICS code 621399?

NAICS code 621399 is 'Offices of All Other Miscellaneous Health Practitioners', classified under the Health Care and Social Assistance sector (NAICS 62). This U.S. industry comprises establishments of independent health practitioners (except physicians; dentists; chiropractors; optometrists; mental health specialists; physical, occupational, and speech

What is the SBA small business size standard for NAICS code 621399?

The SBA defines a small business under NAICS code 621399 (Offices of All Other Miscellaneous Health Practitioners) as one with $10M average annual receipts. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.

How do I register NAICS code 621399 in SAM.gov?

To register NAICS code 621399 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 621399 (Offices of All Other Miscellaneous Health Practitioners) to your NAICS code list. You may designate one code as your Primary NAICS code.

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Related NAICS Codes

Other codes in Offices of Other Health Practitioners

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

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