> 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/621493/ # NAICS code 621493: Freestanding Ambulatory Surgical and Emergency Centers The companies classified under NAICS 621493, 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 621493 is the code for Freestanding Ambulatory Surgical and Emergency Centers, in sector 62: Health Care and Social Assistance. The companies counted under it are mostly very small: 65% have 50 or fewer employees, and 100% are headquartered in the United States. ## What is NAICS 621493? NAICS 621493 is the code for Freestanding Ambulatory Surgical and Emergency 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 8011, Medical doctor's office, in the older SIC system (99%). - 65% 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 (100%). Within the US, Texas is the biggest state (22%). - Most were founded in the 2010s (65%), then the 2000s (19%). **Figure: How NAICS 621493 is built.** The code 621493 split into its parts: sector 62, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 621493. Each digit narrows the category.* ## Which companies are classified under NAICS 621493? The biggest by headcount range include Carbon Health, Wellnow Urgent Care, Convenientmd, Covenant Physician Partners and Next Level Medical. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Carbon Health | Sunnyvale, CA | 1,001 to 5,000 | | Wellnow Urgent Care | Chicago, IL | 1,001 to 5,000 | | Convenientmd | Portsmouth, NH | 1,001 to 5,000 | | Covenant Physician Partners | Nashville, TN | 1,001 to 5,000 | | Next Level Medical | Houston, TX | 501 to 1,000 | | Carespot Urgent Care | Jacksonville, FL | 501 to 1,000 | | Urgent Care Group | Brentwood, TN | 501 to 1,000 | | Surepoint Medical Centers | Mansfield, TX | 501 to 1,000 | | Valuehealth | Overland Park, KS | 201 to 500 | | Carefirst Urgent Care | Anderson Township, OH | 201 to 500 | | Accelerated Urgent Care | Bakersfield, CA | 201 to 500 | | Legacy Er & Urgent Care | Plano, TX | 201 to 500 | | Little Spurs Pediatric Urgent Care | San Antonio, TX | 201 to 500 | | The Healthcare Connection | Cincinnati, OH | 51 to 200 | | Chai Urgent Care | Brooklyn, NY | 51 to 200 | | Vybe Urgent Care | Bala-cynwyd, PA | 51 to 200 | | Velocity Urgent Care | Norfolk, VA | 51 to 200 | | Austin Emergency Center | Austin, TX | 51 to 200 | | Quickmed Urgent Care | Youngstown, OH | 51 to 200 | | Lansing Urgent Care | Lansing, MI | 51 to 200 | | Advance Er | Dallas, TX | 51 to 200 | | Medco Er | Plano, TX | 51 to 200 | | Kootenai Urgent Care | Coeur D Alene, ID | 51 to 200 | | Mercy Urgent Care | Evansville, IN | 51 to 200 | | Altus Emergency Centers | Houston, TX | 51 to 200 | 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 621493 companies based? Within the United States, Texas (22%), California (11%) and Ohio (9%) lead. **Figure: US headquarters of companies in NAICS 621493, by state.** A tile map of the United States shaded by the share of counted US companies in NAICS 621493 headquartered in each state. The largest are Texas 22%, California 11%, Ohio 9%. *Share of counted US companies in NAICS 621493 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for NAICS 621493? 65% 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 621493.** Seven columns for the share of counted companies in NAICS 621493 in each employee range: 11 to 50 65%, 51 to 200 20%, 201 to 500 6%, 501 to 1,000 4%, 1,001 to 5,000 4%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted companies in NAICS 621493 in each employee range.* ## How NAICS 621493 compares - Texas holds 22% of the US companies here, against 8% across all NAICS codes on this site. ## NAICS 621493 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 8011](https://enrich.chat/naics/621111/) | Medical doctor's office | 99% | ## 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 621493 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 621493 (Freestanding Ambulatory Surgical and Emergency 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 621493, 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 621420: Outpatient Mental Health and Substance Abuse](https://enrich.chat/naics/621420/)[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 621493? NAICS 621493 is the code for Freestanding Ambulatory Surgical and Emergency Centers, in sector 62: Health Care and Social Assistance. ### What is the SIC code for NAICS 621493 (Freestanding Ambulatory Surgical and Emergency Centers)? 99% of the companies counted carry SIC 8011 (Medical doctor's office), but the two systems do not map one to one. ### Which companies are classified under NAICS 621493? The biggest by headcount range include Carbon Health, Wellnow Urgent Care, Convenientmd, Covenant Physician Partners and Next Level Medical. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 621493 companies based? The largest groups are headquartered in the United States (100%). ### How big are the companies in NAICS 621493? 65% 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. ### How do I find a company's NAICS code? Search the official NAICS index at the U.S. Census Bureau for the code that matches what the company mostly does. Public companies in the US also list a SIC code in their SEC EDGAR profile. ## Try this prompt Find the people at NAICS 621493 companies ```text Use www.enrich.chat to find the operations, IT and finance leaders at companies with NAICS code 621493, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 621410](https://enrich.chat/naics/621410/) - [NAICS 621420](https://enrich.chat/naics/621420/) - [NAICS 621498](https://enrich.chat/naics/621498/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)