621210 — Offices of Dentists
Description
This industry comprises establishments of health practitioners having the degree of D.M.D. (Doctor of Dental Medicine), D.D.S. (Doctor of Dental Surgery), or D.D.Sc. (Doctor of Dental Science) primarily engaged in the independent practice of general or specialized dentistry or dental 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. They can provide either comprehensive preventive, cosmetic, or emergency care, or specialize in a single field of dentistry.
Exclusions & Cross-References
- Establishments known as dental laboratories primarily engaged in making dentures, artificial teeth, and
- orthodontic appliances to order for dentists are classified in U.S. Industry 339116, Dental Laboratories;
- Establishments of dental hygienists primarily engaged in cleaning teeth and gums or establishments of
- denturists primarily engaged in taking impressions for and fitting dentures are classified in U.S. Industry
- 621399, Offices of All Other Miscellaneous Health Practitioners; and
- Outpatient community health clinics with health practitioners from multiple industries are classified in U.S.
- Industry 621498, All Other Outpatient Care Centers.
Overview Facts
| NAICS Code | 621210 |
|---|---|
| Industry Title | Offices of Dentists |
| SBA Size Standard | $9,000,000 |
| IRS PBA Code | 621210 (exact match) |
| Sectors Hierarchy | Sector 62 → 621 → 6212 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 8021 - Offices and Clinics of Dentists (via SIC1987:8021→NAICS1997:62121→2002:621210→2007:621210→2012:621210→2017:621210→2022:621210)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 621210:
- Sector 62 Directory Hub — List of related industries in the Health Care and Social Assistance sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 6212
Frequently Asked Questions (FAQ)
Is 621210 a valid 2022 NAICS code?
NAICS 621210 is 'Offices of Dentists', a 2022 U.S. national industry under Sector 62 (Health Care and Social Assistance); the SBA small-business size standard is $9,000,000.
What is the SBA size standard for NAICS 621210?
The SBA small business size standard for NAICS 621210 is $9,000,000 (based on receipts).
What is the legacy SIC code mapping for 621210?
NAICS code 621210 maps to the legacy 1987 SIC codes: 8021 - Offices and Clinics of Dentists.