> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/naics/621399/ # NAICS code 621399: Offices of All Other Miscellaneous Health Practitioners The companies classified under NAICS 621399, where they are based, how big they are and how the code maps to SIC. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** NAICS 621399 is the code for Offices of All Other Miscellaneous Health Practitioners, in sector 62: Health Care and Social Assistance. The companies counted under it are mostly very small: 76% have 50 or fewer employees, and 86% are headquartered in the United States. ## What is NAICS 621399? NAICS 621399 is the code for Offices of All Other Miscellaneous Health Practitioners. It belongs to sector 62: Health Care and Social Assistance. NAICS, the North American Industry Classification System, is the standard U.S. government agencies use to sort businesses by what they mainly do, and each digit narrows the category. Most of the companies counted also carry SIC 8049, Health practitioner's office, in the older SIC system (86%). - 76% of the companies counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. - The largest group is headquartered in the United States (86%). Within the US, Florida is the biggest state (8%). - Most were founded in the 2010s (54%), then the 2000s (24%). **Figure: How NAICS 621399 is built.** The code 621399 split into its parts: sector 62, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 621399. Each digit narrows the category.* ## Which companies are classified under NAICS 621399? The biggest by headcount range include Royal Free London NHS Foundation Trust, Envision Healthcare, Parkview Health, Northern Care Alliance Nhs Foundation Trust and East London Nhs Foundation Trust. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | [Royal Free London NHS Foundation Trust](https://enrich.chat/company/royal-free-london-nhs-foundation-trust/) | London, United Kingdom | 10,001+ | | [Envision Healthcare](https://enrich.chat/company/envision-healthcare/) | Nashville, TN | 10,001+ | | [Parkview Health](https://enrich.chat/company/parkview-health/) | Fort Wayne, IN | 10,001+ | | Northern Care Alliance Nhs Foundation Trust | Salford, United Kingdom | 10,001+ | | East London Nhs Foundation Trust | London, United Kingdom | 5,001 to 10,000 | | Praktikertjänst | Stockholm, Sweden | 5,001 to 10,000 | | Region Sörmland | Nykoping, Sweden | 5,001 to 10,000 | | Zydus Hospitals | Ahmedabad, India | 1,001 to 5,000 | | Inhealth | High Wycombe, United Kingdom | 1,001 to 5,000 | | Abs Kids | Salt Lake City, UT | 1,001 to 5,000 | | Millennium Physician Group | Fort Myers, FL | 1,001 to 5,000 | | Revere Health | Provo, UT | 1,001 to 5,000 | | Stride Mental Health | Lilyfield, Australia | 501 to 1,000 | | Jefferson Healthcare | Port Townsend, WA | 501 to 1,000 | | Empower Behavioral Health | San Antonio, TX | 501 to 1,000 | | Ihi | Boston, MA | 201 to 500 | | Workit Health | Ann Arbor, MI | 201 to 500 | | Millennium Physicians | The Woodlands, TX | 201 to 500 | | Horizon Care Services | North Palm Beach, FL | 201 to 500 | | Aspen Valley Hospital | Aspen, CO | 201 to 500 | | Rondom Podotherapeuten | Leusden, Netherlands | 201 to 500 | | Livebig | Sydney, Australia | 201 to 500 | | Wolfe Eye Clinic | Marshalltown, IA | 201 to 500 | | Brook Lane | Hagerstown, MD | 201 to 500 | | Mandala Healing Center | West Palm Beach, United States | 201 to 500 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Where are NAICS 621399 companies based? The largest groups are headquartered in the United States (86%), Australia (3%) and Canada (2%). **Figure: Where companies in NAICS 621399 are based.** Bars for the share of counted companies in NAICS 621399 headquartered in each country: United States 86%, Australia 3%, Canada 2%, United Kingdom 2%, Brazil 1%, Germany 1%, Netherlands 1%. *Share of counted companies in NAICS 621399 by headquarters country.* Within the United States, Florida (8%), Texas (8%) and California (8%) lead. **Figure: US headquarters of companies in NAICS 621399, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 621399 headquartered in each state. The largest are Florida 8%, Texas 8%, California 8%. *Share of counted US companies in NAICS 621399 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 621399? 76% of them have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in NAICS 621399.** Seven columns for the share of counted companies in NAICS 621399 in each employee range: 11 to 50 76%, 51 to 200 15%, 201 to 500 4%, 501 to 1,000 2%, 1,001 to 5,000 2%, 5,001 to 10,000 2%, 10,001+ 1%. *Share of counted companies in NAICS 621399 in each employee range.* ## How old are NAICS 621399 companies? Most were founded in the 2010s (54%), then the 2000s (24%). **Figure: When companies in NAICS 621399 were founded.** Eight columns for the share of counted companies in NAICS 621399 founded in each era: Before 1960 6%, 1960s 2%, 1970s 2%, 1980s 1%, 1990s 9%, 2000s 24%, 2010s 54%, 2020s 3%. *Share of counted companies in NAICS 621399 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 621399 compares - 76% of companies in NAICS 621399 have 50 or fewer employees, against 60% across all NAICS codes on this site. - 57% were founded in 2010 or later, against 30% across all NAICS codes on this site. - Colorado holds 7% of the US companies here, against 2% across all NAICS codes on this site. ## How do NAICS 621399 companies describe themselves? A code is assigned by classification, and a company does not choose its own, so the label a company uses for itself can differ. The most common labels here are Medical Practices (43%), Hospitals and Health Care (22%) and Wellness and Fitness Services (14%). **Figure: How companies in NAICS 621399 describe themselves.** Bars for the share of counted companies in NAICS 621399 that give each industry on their public profile: Medical Practices 43%, Hospitals and Health Care 22%, Wellness and Fitness Services 14%, Mental Health Care 11%, Health; Wellness and Fitness 8%. *Share of counted companies in NAICS 621399 by the industry they list on their public profile.* ## NAICS 621399 and the SIC system NAICS replaced SIC in 1997, but the two do not line up one to one: companies filed under one NAICS code can carry several SIC codes. These are the ones seen most. | Code | Title | Share of counted | | --- | --- | --- | | SIC 8049 | Health practitioner's office | 86% | | [SIC 8011](https://enrich.chat/naics/621111/) | Medical doctor's office | 3% | | [SIC 8099](https://enrich.chat/naics/621999/) | Health and allied services | 2% | ## Where NAICS codes come from NAICS is maintained by the U.S. Census Bureau with Canada and Mexico and revised every five years; the current edition is NAICS 2022. To check exactly what a code includes, search the [official NAICS index](https://www.census.gov/naics/) or read the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html). Pick a code by what a company mostly does, not by who it sells to. ## How do you reach the people at NAICS 621399 companies? The people to talk to are usually operations, IT and finance leaders. You can build the list from this code in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with NAICS code 621399 (Offices of All Other Miscellaneous Health Practitioners) ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the operations, IT and finance leaders at companies with NAICS code 621399, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Codes next to it: [NAICS 621310: Offices of Chiropractors](https://enrich.chat/naics/621310/)[NAICS 621320: Offices of Optometrists](https://enrich.chat/naics/621320/)[NAICS 621330: Offices of Mental Health Practitioners](https://enrich.chat/naics/621330/)[NAICS 621340: Offices of Physical, Occupational and Speech](https://enrich.chat/naics/621340/)[NAICS 621391: Offices of Podiatrists](https://enrich.chat/naics/621391/) Others in sector 62: [NAICS 621111: Offices of Physicians](https://enrich.chat/naics/621111/)[NAICS 621999: All Other Miscellaneous Ambulatory Health](https://enrich.chat/naics/621999/)[NAICS 621210: Offices of Dentists](https://enrich.chat/naics/621210/)[NAICS 621610: Home Health Care Services](https://enrich.chat/naics/621610/)[NAICS 621498: All Other Outpatient Care Centers](https://enrich.chat/naics/621498/)[NAICS 622110: General Medical and Surgical Hospitals](https://enrich.chat/naics/622110/)[NAICS 623990: Other Residential Care Facilities](https://enrich.chat/naics/623990/)[NAICS 621420: Outpatient Mental Health and Substance Abuse](https://enrich.chat/naics/621420/) ## Frequently asked questions ### What is NAICS code 621399? NAICS 621399 is the code for Offices of All Other Miscellaneous Health Practitioners, in sector 62: Health Care and Social Assistance. ### What is the SIC code for NAICS 621399 (Offices of All Other Miscellaneous Health Practitioners)? 86% of the companies counted carry SIC 8049 (Health practitioner's office), but the two systems do not map one to one. ### Which companies are classified under NAICS 621399? The biggest by headcount range include Royal Free London NHS Foundation Trust, Envision Healthcare, Parkview Health, Northern Care Alliance Nhs Foundation Trust and East London Nhs Foundation Trust. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 621399 companies based? The largest groups are headquartered in the United States (86%), Australia (3%) and Canada (2%). ### How big are the companies in NAICS 621399? 76% have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. ### Is NAICS 621399 the same as a SIC code? No. NAICS replaced SIC as the U.S. federal standard in 1997, and the two do not map one to one. The SIC code seen most among these companies is 8049. ## Try this prompt Find the people at NAICS 621399 companies ```text Use www.enrich.chat to find the operations, IT and finance leaders at companies with NAICS code 621399, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 621310](https://enrich.chat/naics/621310/) - [NAICS 621320](https://enrich.chat/naics/621320/) - [NAICS 621330](https://enrich.chat/naics/621330/) - [NAICS 621340](https://enrich.chat/naics/621340/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)