NAICS 621399:
Offices of All Other Miscellaneous Health Practitioners
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.
Acupuncturists' (except MDs or DOs) officesHypnotherapists' officesDental hygienists' offices+7 examples
Matching SIC code: 8049 Offices and Clinics of Health Practitioners, Not Elsewhere Classified (also 8093 Specialty Outpatient Facilities, Not Elsewhere Classified)
Where it sits
- 62Health Care and Social AssistanceSector
- 621Ambulatory Health Care ServicesSubsector
- 6213Offices of Other Health PractitionersIndustry group
- 62139Offices of All Other Health PractitionersNAICS industry
- 621399Offices of All Other Miscellaneous Health PractitionersNational industry
Largest companies with NAICS 621399
Updated Nov 9, 2026| Rank | Company | Headquarters | Employees |
|---|---|---|---|
| 1 |  Hanger, Inc.hanger.com | Austin, US | 4.8K |
| 2 |  Nourishnourish.com | New York, US | 4.3K |
| 3 |  Zeelzeel.com | New York, US | 940 |
| 4 |  SkinSpiritskinspirit.com | Palo Alto, US | 667 |
| 5 |  Foodsmartfoodsmart.com | San Francisco, US | 616 |
| 6 |  Fay Nutritionfaynutrition.com | San Francisco, US | 457 |
| 7 |  Aspen RxHealthaspenrxhealth.com | Tampa, US | 456 |
| 8 |  !Viva la Mama!vivalamama.org | Burlington, US | 420 |
| 9 |  HealthDrive Corporationhealthdrive.com | Framingham, US | 400 |
| 10 |  SEV SKINsevlaser.com | Glendale, US | 375 |
Not this code?
Similar activities the Census classifies elsewhere.
- 62111Offices of PhysiciansThe independent practice of medicine (i.e., physicians)
- 621210Offices of DentistsThe independent practice of dentistry
- 621498All Other Outpatient Care CentersOperating outpatient community health clinics with health practitioners from multiple industries
Questions about NAICS 621399
Which businesses use NAICS 621399?
What SIC code matches NAICS 621399?
How many companies have NAICS 621399?
Code titles, definitions, examples and SIC matches: NAICS 2022 and the Census concordances, US Census Bureau. Company counts and lists: Crustdata, companies with a website, each by its primary code, updated weekly. Employee counts are estimates.