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 (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
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
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)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC Q503 — Dentistry Services
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 621210 valid in 2022? ▾
Yes, 621210 is a valid 6-digit 2022 NAICS national industry code representing 'Offices of Dentists' under Sector 62 in the official classification index.
What is the SBA size standard for NAICS code 621210? ▾
The Small Business Administration (SBA) has established a small business size standard of $9,000,000 for NAICS code 621210 (Offices of Dentists), calculated based on receipts.
What is the legacy SIC equivalent for NAICS 621210? ▾
According to official Census Bureau concordance tables, NAICS code 621210 (Offices of Dentists) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 8021 - Offices and Clinics of Dentists.
Related Pages & Tools
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.
- NAICS 621210 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Offices of Dentists).
- IRS PBA Code for Dentist — Principal Business Activity tax reporting details.
- IRS PBA Code for Orthodontist — Principal Business Activity tax reporting details.
- Compare NAICS 621210 vs 621399 — Industrial classification comparison rules (Offices of Dentists vs Offices of All Other Miscellaneous Health Practitioners).
- 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.