NAICS Code 621: Ambulatory Health Care Services
The NAICS code for Ambulatory Health Care Services is 621.
Ambulatory Health Care Services establishments provide outpatient medical, dental, and therapeutic care without hospital admission. Physician offices, dental practices, diagnostic laboratories, home health agencies, and outpatient clinics deliver the majority of US health care encounters at lower cost than inpatient settings.
Ambulatory Health Care Services is a 3-digit subsector of the broader Health Care and Social Assistance (NAICS 62) sector.
1,233,983
Total US Entities
7
Industry Groups
621
NAICS Code
Classification
Industry Groups (4-digit)
| NAICS Code | Industry Group Title | US Entities |
|---|---|---|
| 6211 | NAICS 6211 — Offices of Physicians | 417,369 |
| 6212 | NAICS 6212 — Offices of Dentists | 213,216 |
| 6213 | NAICS 6213 — Offices of Other Health Practitioners | 294,965 |
| 6214 | NAICS 6214 — Outpatient Care Centers | 78,173 |
| 6215 | NAICS 6215 — Medical and Diagnostic Laboratories | 18,043 |
| 6216 | NAICS 6216 — Home Health Care Services | 59,567 |
| 6219 | NAICS 6219 — Other Ambulatory Health Care Services | 152,651 |
Sample Data
Sample Companies in This Industry
Subsector 621 — Ambulatory Health Care Services
| Company Name | NAICS Code |
|---|---|
| UnitedHealth Group Inc | 621 |
| DaVita Inc | 621 |
| Laboratory Corporation of America | 621 |
| Team Health Holdings Inc | 621 |
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Other Subsectors in Health Care and Social Assistance
Working with legacy records? convert a NAICS code to SIC using the mapping table — NAICS 2022 at the five-digit industry level paired with SIC 1987 four-digit industries, with coverage gaps stated.