> 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/621420/ # NAICS code 621420: Outpatient Mental Health and Substance Abuse Centers The companies classified under NAICS 621420, 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 621420 is the code for Outpatient Mental Health and Substance Abuse Centers, in sector 62: Health Care and Social Assistance. The companies counted under it are mostly small: 74% have 200 or fewer employees, and 99% are headquartered in the United States. ## What is NAICS 621420? NAICS 621420 is the code for Outpatient Mental Health and Substance Abuse Centers. 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 8093, Specialty outpatient clinic, in the older SIC system (93%). - 43% of the companies counted have 50 or fewer employees, and the middle one is in the 51 to 200 range. - The largest group is headquartered in the United States (99%). Within the US, California is the biggest state (9%). - Most were founded in the 2010s (31%), then the 2000s (19%). **Figure: How NAICS 621420 is built.** The code 621420 split into its parts: sector 62, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 621420. Each digit narrows the category.* ## Which companies are classified under NAICS 621420? The biggest by headcount range include Nationwide Children's Hospital, Lifestance Health, St. Joseph's Health Care London, Rha Health Services and Ableto. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | [Nationwide Children's Hospital](https://enrich.chat/company/nationwide-childrens-hospital/) | Columbus, OH | 10,001+ | | Lifestance Health | Scottsdale, AZ | 5,001 to 10,000 | | St. Joseph's Health Care London | London, Canada | 5,001 to 10,000 | | Rha Health Services | Asheville, United States | 5,001 to 10,000 | | Eating Recovery Center | Denver, CO | 1,001 to 5,000 | | Legacy Community Health | Houston, TX | 1,001 to 5,000 | | Alliance Health | Durham, NC | 1,001 to 5,000 | | Pine Rest Christian Mental Health Services | Grand Rapids, MI | 1,001 to 5,000 | | The Harris Center For Mental Health And Idd | Houston, TX | 1,001 to 5,000 | | Centerstone | Nashville, TN | 1,001 to 5,000 | | Stars Behavioral Health Group | Long Beach, CA | 1,001 to 5,000 | | Mhmr Of Tarrant County | Fort Worth, TX | 1,001 to 5,000 | | Riverside Community Care | Dedham, MA | 1,001 to 5,000 | | Kidspeace | Schnecksville, PA | 1,001 to 5,000 | | Nystrom & Associates | New Brighton, MN | 1,001 to 5,000 | | Signature Health | Kirtland, OH | 1,001 to 5,000 | | Bestself Behavioral Health | Buffalo, NY | 1,001 to 5,000 | | Oaks Integrated Care | Mt. Holly, NJ | 1,001 to 5,000 | | Community Healthlink | Worcester, MA | 1,001 to 5,000 | | Behavioral Innovations | Dallas, TX | 501 to 1,000 | | Connections Health Solutions | Phoenix, AZ | 501 to 1,000 | | Haven Behavioral Healthcare | Nashville, TN | 501 to 1,000 | | Vaya Health | Asheville, NC | 501 to 1,000 | | Wellspace Health | Sacramento, CA | 501 to 1,000 | | Valley Behavioral Health | Salt Lake City, UT | 501 to 1,000 | 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 621420 companies based? Within the United States, California (9%), Florida (9%) and Texas (6%) lead. **Figure: US headquarters of companies in NAICS 621420, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 621420 headquartered in each state. The largest are California 9%, Florida 9%, Texas 6%. *Share of counted US companies in NAICS 621420 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 621420? 43% of them have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in NAICS 621420.** Seven columns for the share of counted companies in NAICS 621420 in each employee range: 11 to 50 43%, 51 to 200 31%, 201 to 500 13%, 501 to 1,000 7%, 1,001 to 5,000 5%, 5,001 to 10,000 1%, 10,001+ 0%. *Share of counted companies in NAICS 621420 in each employee range.* ## How old are NAICS 621420 companies? Most were founded in the 2010s (31%), then the 2000s (19%). **Figure: When companies in NAICS 621420 were founded.** Eight columns for the share of counted companies in NAICS 621420 founded in each era: Before 1960 10%, 1960s 7%, 1970s 13%, 1980s 8%, 1990s 9%, 2000s 19%, 2010s 31%, 2020s 3%. *Share of counted companies in NAICS 621420 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 621420 compares - 43% of companies in NAICS 621420 have 50 or fewer employees, against 60% across all NAICS codes on this site. ## How do NAICS 621420 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 Mental Health Care (64%), Hospitals and Health Care (17%) and Medical Practices (7%). **Figure: How companies in NAICS 621420 describe themselves.** Bars for the share of counted companies in NAICS 621420 that give each industry on their public profile: Mental Health Care 64%, Hospitals and Health Care 17%, Medical Practices 7%, Individual and Family Services 6%. *Share of counted companies in NAICS 621420 by the industry they list on their public profile.* ## NAICS 621420 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 8093 | Specialty outpatient clinic | 93% | ## 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 621420 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 621420 (Outpatient Mental Health and Substance Abuse Centers) ``` ### 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 621420, 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 621410: Family Planning Centers](https://enrich.chat/naics/621410/)[NAICS 621493: Freestanding Ambulatory Surgical](https://enrich.chat/naics/621493/)[NAICS 621498: All Other Outpatient Care Centers](https://enrich.chat/naics/621498/) 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 622110: General Medical and Surgical Hospitals](https://enrich.chat/naics/622110/)[NAICS 621340: Offices of Physical, Occupational and Speech](https://enrich.chat/naics/621340/)[NAICS 623990: Other Residential Care Facilities](https://enrich.chat/naics/623990/)[NAICS 621310: Offices of Chiropractors](https://enrich.chat/naics/621310/) ## Frequently asked questions ### What is NAICS code 621420? NAICS 621420 is the code for Outpatient Mental Health and Substance Abuse Centers, in sector 62: Health Care and Social Assistance. ### What is the SIC code for NAICS 621420 (Outpatient Mental Health and Substance Abuse Centers)? 93% of the companies counted carry SIC 8093 (Specialty outpatient clinic), but the two systems do not map one to one. ### Which companies are classified under NAICS 621420? The biggest by headcount range include Nationwide Children's Hospital, Lifestance Health, St. Joseph's Health Care London, Rha Health Services and Ableto. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 621420 companies based? The largest groups are headquartered in the United States (99%). ### How big are the companies in NAICS 621420? 43% have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. ### Is NAICS 621420 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 8093. ## Try this prompt Find the people at NAICS 621420 companies ```text Use www.enrich.chat to find the operations, IT and finance leaders at companies with NAICS code 621420, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 621410](https://enrich.chat/naics/621410/) - [NAICS 621493](https://enrich.chat/naics/621493/) - [NAICS 621498](https://enrich.chat/naics/621498/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)