NAICS 621111 vs 621112
This page compares NAICS 621111 (Offices of Physicians (except Mental Health Specialists)) vs NAICS 621112 (Offices of Physicians, Mental Health Specialists) to help you determine the correct industry classification code.
Side-by-Side Comparison Asset
| Dimension | NAICS 621111 — Offices of Physicians (except Mental Health Specialists) | NAICS 621112 — Offices of Physicians, Mental Health Specialists |
|---|---|---|
| Definition | This U.S. industry comprises establishments of health practitioners having the degree of M.D. (Doctor of Medicine) or D.O. (Doctor of Osteopathic Medicine) primarily engaged in the independent practice of general or specialized medicine (except psychiatry or psychoanalysis) or surgery. 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. | This U.S. industry comprises establishments of health practitioners having the degree of M.D. (Doctor of Medicine) or D.O. (Doctor of Osteopathic Medicine) primarily engaged in the independent practice of psychiatry or psychoanalysis. 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. |
| SBA Size Standard | $16,000,000 | $13,500,000 |
| US Establishments (CBP) | 204,617 | 13,449 |
Decision Rule Guidelines
Select 621111 if your primary business focus aligns with Offices of Physicians (except Mental Health Specialists). Select 621112 if the establishment's core activities match the definition of Offices of Physicians, Mental Health Specialists. Verify the revenue share of each activity if both apply.
Frequently Asked Questions (FAQ)
Can I report both NAICS 621111 and 621112 on a business tax return? ▾
No, the IRS requires declaring a single primary activity code (either 621111 or 621112) on Schedule C or Form 1120. You must audit your revenue share between these two classifications and select the code that represents the highest percentage of your receipts.
How do the SBA size standards differ between NAICS 621111 and 621112? ▾
NAICS 621111 has a standard of $16,000,000 while NAICS 621112 has a standard of $13,500,000. Ensure your rolling averages of annual receipts or employees do not exceed the specific code limit for your chosen classification.
Related Pages & Tools
- NAICS Code 621111 Directory — Official definition, SBA thresholds, and details.
- NAICS Code 621112 Directory — Official definition, SBA thresholds, and details.
- Find NAICS by Industry — Search classification directory.
Primary Ingestion Source
Data sourced from the U.S. Census Bureau NAICS 2022 Manual and SBA Small Business Size Regulations (13 CFR Part 121). Last verified on 2026-06-30.