ASC surgeons by specialty
50,000 surgeons and proceduralists affiliated with ambulatory surgery centers across 56 states as of July 2026, organized into 77 specialties. Ophthalmology (6,136), Gastroenterology (4,771), Orthopedic Surgery (4,608) are the largest, 31% of the directory between them. Each hub ranks the specialty by state and city and links to the surgery centers where it concentrates.
Verified directory maintained by DataLily AI. Prefer geography? Browse surgeons by state, or see the ASC CPT code directory for the procedures each specialty performs.
- Specialties
- 77
- with a national hub
- Providers
- 50,000
- 49,936 in a hub specialty
- States
- 56
- and territories covered
- Largest specialty
- Ophthalmology
- 6,136 providers
All specialties, ranked
Share is of every ASC-affiliated provider in the directory; the state shown is where the specialty has the most providers. Bar length is relative to the largest specialty.
- 1OphthalmologyCalifornia6,13612.3%
- 2GastroenterologyFlorida4,7719.5%
- 3Orthopedic SurgeryCalifornia4,6089.2%
- 4Obstetrics & GynecologyCalifornia4,5769.2%
- 5CardiologyCalifornia3,1936.4%
- 6General SurgeryCalifornia2,9475.9%
- 7PodiatryFlorida2,5675.1%
- 8DermatologyCalifornia2,2664.5%
- 9UrologyCalifornia1,7683.5%
- 10Pulmonary DiseaseCalifornia1,6623.3%
- 11OtolaryngologyCalifornia1,5723.1%
- 12NeurosurgeryCalifornia1,0582.1%
- 13Internal MedicineCalifornia1,0482.1%
- 14Infectious DiseaseFlorida8751.8%
- 15Radiation OncologyFlorida8561.7%
- 16Plastic & Reconstructive SurgeryCalifornia8471.7%
- 17Interventional CardiologyFlorida8031.6%
- 18AnesthesiologyCalifornia7861.6%
- 19Certified Registered Nurse Anesthetist (CRNA)North Carolina7681.5%
- 20Pain ManagementFlorida7531.5%
- 21Vascular SurgeryCalifornia6951.4%
- 22Critical Care MedicineFlorida6191.2%
- 23Hand SurgeryCalifornia4771.0%
- 24SurgeryCalifornia3830.8%
- 25Diagnostic RadiologyCalifornia3720.7%
- 26Cardiac ElectrophysiologyFlorida3690.7%
- 27Geriatric MedicineNew York3380.7%
- 28Colorectal SurgeryCalifornia3240.6%
- 29Surgical OncologyCalifornia2220.4%
- 30Gynecologic OncologyNew York1970.4%
- 31Sports MedicineCalifornia1950.4%
- 321180.2%
- 33Thoracic SurgeryCalifornia1180.2%
- 34Mohs Micrographic SurgeryCalifornia1040.2%
- 351040.2%
- 36Reproductive EndocrinologyCalifornia1000.2%
- 37Pediatric SurgeryFlorida990.2%
- 38Foot & Ankle SurgeryFlorida870.2%
- 39860.2%
- 40Family PracticeCalifornia730.1%
- 41GynecologyMaryland670.1%
- 42HospitalistCalifornia660.1%
- 43Physical Medicine & RehabilitationCalifornia630.1%
- 44Pediatric Orthopedic SurgeryFlorida590.1%
- 45NeurologyCalifornia580.1%
- 46Cardiac SurgeryCalifornia520.1%
- 47Vascular & Interventional RadiologyCalifornia470.1%
- 48Emergency MedicineMaryland450.1%
- 49Facial Plastic SurgeryCalifornia420.1%
- 50General PracticeCalifornia390.1%
- 51Orthopedic Spine SurgeryFlorida370.1%
- 52Pediatric OtolaryngologyMissouri370.1%
- 53330.1%
- 54Sleep MedicineCalifornia320.1%
- 55Pediatric UrologyFlorida310.1%
- 56ObstetricsTexas290.1%
- 57Nuclear MedicineNew York260.1%
- 58Hospice & Palliative MedicineNew York250.1%
- 59Foot SurgeryFlorida230.0%
- 60210.0%
- 61Surgical Critical CareNew York180.0%
- 62RetinaMissouri150.0%
- 63140.0%
- 64Pediatric Ophthalmology & StrabismusCalifornia130.0%
- 65Trauma SurgeryCalifornia130.0%
- 66Pediatric DermatologyIllinois110.0%
- 67DermatopathologyCalifornia100.0%
- 68Primary Podiatric MedicineNew Jersey90.0%
- 69OptometryPennsylvania80.0%
- 70Osteopathic Manipulative MedicineCalifornia80.0%
- 71Procedural DermatologyFlorida80.0%
- 72EndocrinologyCalifornia70.0%
- 73Peripheral Vascular DiseaseFlorida70.0%
- 74HepatologyFlorida60.0%
- 75Orthopedic TraumaCalifornia60.0%
- 7660.0%
- 77Complex Family PlanningCalifornia50.0%
Also represented
Specialties with fewer than 5 ASC-affiliated providers in this snapshot. They appear under their state on the state directory rather than on a page of their own.
Adult Congenital Heart Disease (ACHD) (4) · Allergy/Immunology (2) · Audiology (2) · Chiropractic (1) · Clinical & Laboratory Dermatological Immunology (1) · Clinical Psychology (2) · Cornea & External Disease (3) · Glaucoma (4) · Medical Oncology (4) · Nephrology (4) · Neuro-ophthalmology (1) · Neuropsychiatry (1) · Otolaryngic Allergy (1) · Otology & Neurotology (4) · Preventive Medicine (4) · Psychiatry (3) · Rheumatology (4) · Therapeutic Radiology (4).
Which specialties are most common at ambulatory surgery centers?
Ophthalmology (6,136), Gastroenterology (4,771), Orthopedic Surgery (4,608) are the largest groups, together 31% of the 50,000 ASC-affiliated providers in DataLily AI's current snapshot (updated July 2026). 77 specialties have enough providers for a page of their own.
How are providers grouped into specialties?
Specialty reflects each provider's registry designation. Spelling variants of the same specialty (for example "Orthopedic" and "Orthopaedic") are merged under one hub, while subspecialties such as Hand Surgery or Retina keep their own pages. A specialty gets a national hub once it has at least 5 ASC-affiliated providers; smaller ones are listed under their state.
Can I browse a specialty within one state?
Yes. Every specialty hub breaks its providers out by state, and states with three or more providers in that specialty get a dedicated page grouped by city, for example Ophthalmology in California. Profiles list credential, NPI, and surgery-center affiliations.