> 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/621111/pennsylvania/ # NAICS 621111 companies in Pennsylvania Companies with NAICS code 621111 (Offices of Physicians (Except Mental Health Specialists)) headquartered in Pennsylvania, with their cities, sizes and SIC codes. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** The biggest NAICS 621111 companies in Pennsylvania by headcount range include Geisinger Quality Options, Oss Health and Premier Orthopaedics. NAICS 621111 is the code for Offices of Physicians (Except Mental Health Specialists). Among those counted, they are mostly very small: 64% have 50 or fewer employees. ## Which NAICS 621111 companies are in Pennsylvania? The biggest by headcount range include Geisinger Quality Options, Oss Health, Premier Orthopaedics, Esperanza Health Center and Premier Medical Associates, P.C. NAICS 621111 is the code for Offices of Physicians (Except Mental Health Specialists). Names link to a company profile where we have one. | Company | City | Employees | | --- | --- | --- | | [Geisinger Quality Options](https://enrich.chat/company/geisinger-quality-options/) | Danville | 10,001+ | | Oss Health | York | 501 to 1,000 | | Premier Orthopaedics | Newtown Square | 501 to 1,000 | | Esperanza Health Center | Philadelphia | 201 to 500 | | Premier Medical Associates, P.C | Monroeville | 201 to 500 | | Hamilton Health Center | Harrisburg | 201 to 500 | | Pentahealth | Exton | 201 to 500 | | Excel Medical Center | Philadelphia | 201 to 500 | | Squirrel Hill Health Center | Pittsburgh | 51 to 200 | | Genesis Medical Associates | Pittsburgh | 51 to 200 | | Vascular Access Centers | Philadelphia | 51 to 200 | | Everett & Hurite Ophthalmic Association | Pittsburgh | 51 to 200 | | Laurel Eye Clinic | Brookville | 51 to 200 | | Moore Eye Institute | Springfield | 51 to 200 | | Lancaster Neuroscience & Spine Associates | Lancaster | 51 to 200 | | Retina Vitreous Consultants | Monroeville | 51 to 200 | | Scranton Primary Health Care Center | Scranton | 51 to 200 | | Dermatology Associates Of York | York | 51 to 200 | | Surgery Center Of Lancaster | Lancaster | 51 to 200 | | Premier Eye Care Group | Harrisburg | 51 to 200 | | Freedom Pathology Partners | Conshohocken | 11 to 50 | | Ringpfeil Advanced Dermatology | Haverford | 11 to 50 | | Abington Neurological Associates | Abington | 11 to 50 | | Laser Eye Surgery Of Erie | Erie | 11 to 50 | | Meeting Point Health | Philadelphia | 11 to 50 | 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. ## Which cities in Pennsylvania? Within Pennsylvania, Philadelphia (11%), Pittsburgh (9%) and Lancaster (7%) are the most common headquarters. **Figure: Cities of NAICS 621111 companies in Pennsylvania.** Bars for the share of counted NAICS 621111 companies in Pennsylvania headquartered in each city: Philadelphia 11%, Pittsburgh 9%, Lancaster 7%, Reading 5%. *Share of counted NAICS 621111 companies in Pennsylvania by headquarters city.* ## How big are they? 64% of the NAICS 621111 companies counted in Pennsylvania 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 NAICS 621111 companies in Pennsylvania.** Seven columns for the share of counted NAICS 621111 companies in Pennsylvania in each employee range: 11 to 50 64%, 51 to 200 22%, 201 to 500 9%, 501 to 1,000 4%, 1,001 to 5,000 0%, 5,001 to 10,000 0%, 10,001+ 2%. *Share of counted NAICS 621111 companies in Pennsylvania in each employee range.* ## How do you reach the people at these Pennsylvania companies? The people to talk to are usually operations, IT and finance leaders. Build the list 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 621111 in Pennsylvania ``` ### 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 621111 in Pennsylvania, 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 About the code: [NAICS 621111: Offices of Physicians (Except Mental Health Specialists)](https://enrich.chat/naics/621111/). About the place: [companies in Pennsylvania](https://enrich.chat/companies-in/pennsylvania/). NAICS 621111 in other states: [Texas](https://enrich.chat/naics/621111/texas/)[California](https://enrich.chat/naics/621111/california/)[Florida](https://enrich.chat/naics/621111/florida/)[New York](https://enrich.chat/naics/621111/new-york/)[Georgia](https://enrich.chat/naics/621111/georgia/)[Illinois](https://enrich.chat/naics/621111/illinois/)[Tennessee](https://enrich.chat/naics/621111/tennessee/)[New Jersey](https://enrich.chat/naics/621111/new-jersey/)[Ohio](https://enrich.chat/naics/621111/ohio/)[Arizona](https://enrich.chat/naics/621111/arizona/) Other NAICS codes in Pennsylvania: [NAICS 541511: Custom Computer Programming Services](https://enrich.chat/naics/541511/pennsylvania/)[NAICS 541512: Computer Systems Design Services](https://enrich.chat/naics/541512/pennsylvania/)[NAICS 524210: Insurance Agencies and Brokerages](https://enrich.chat/naics/524210/pennsylvania/)[NAICS 541110: Offices of Lawyers](https://enrich.chat/naics/541110/pennsylvania/)[NAICS 611110: Elementary and Secondary Schools](https://enrich.chat/naics/611110/pennsylvania/)[NAICS 236220: Commercial and Institutional Building](https://enrich.chat/naics/236220/pennsylvania/)[NAICS 531210: Offices of Real Estate Agents](https://enrich.chat/naics/531210/pennsylvania/)[NAICS 238220: Plumbing, Heating, and Air-Conditioning](https://enrich.chat/naics/238220/pennsylvania/)[NAICS 541613: Marketing Consulting Services](https://enrich.chat/naics/541613/pennsylvania/)[NAICS 523940: Portfolio Management and Investment](https://enrich.chat/naics/523940/pennsylvania/) ## Frequently asked questions ### Which NAICS 621111 companies are in Pennsylvania? The biggest by headcount range include Geisinger Quality Options, Oss Health, Premier Orthopaedics, Esperanza Health Center and Premier Medical Associates, P.C. The page lists 25 with links to their profiles where we have them. ### What is NAICS 621111? NAICS 621111 is the code for Offices of Physicians (Except Mental Health Specialists), in sector 62: Health Care and Social Assistance. ### Which cities in Pennsylvania have the most? Philadelphia (11%), Pittsburgh (9%) and Lancaster (7%) lead among the companies counted. ## Try this prompt Find the people at NAICS 621111 companies in Pennsylvania ```text Use www.enrich.chat to find the operations, IT and finance leaders at companies with NAICS code 621111 in Pennsylvania, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [NAICS 621111 in Texas](https://enrich.chat/naics/621111/texas/) - [NAICS 621111 in California](https://enrich.chat/naics/621111/california/) - [NAICS 621111 in Florida](https://enrich.chat/naics/621111/florida/) - [NAICS 621111 in New York](https://enrich.chat/naics/621111/new-york/) - [NAICS 541511 in Pennsylvania](https://enrich.chat/naics/541511/pennsylvania/) - [NAICS 541512 in Pennsylvania](https://enrich.chat/naics/541512/pennsylvania/) - [NAICS 524210 in Pennsylvania](https://enrich.chat/naics/524210/pennsylvania/) - [NAICS 541110 in Pennsylvania](https://enrich.chat/naics/541110/pennsylvania/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)