NPPES file of Aug 9, 2026

Doctors and health care providers in San Antonio, TX

37,749 individual NPPES records list a practice address in San Antonio, 2nd of 694 Texas cities. The largest group is behavior technician: 2,756, 7% of the city's records, against 6% across Texas. Page 111 of 755.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in San Antonio

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

San Antonio in Texas

  • Rank in Texas2nd of 694 cities by records
  • Share of the state8.8% of Texas's records
  • Specialties present25 or more taxonomy codes
  • Top three groups17.2% of all records
  • Behavior Technician rank1st of the 10 Texas cities with the most

Compared with Texas as a whole, San Antonio has 4.8× the state's share of electroneurodiagnostic specialist/technologist records and 0.73× its share of family nurse practitioner records.

Providers in San Antonio, alphabetically

  1. Robert Castillo, DPMFoot & Ankle Surgery Podiatrist1497771166
  2. Ruth CastilloDoula1780923144
  3. Samantha CastilloBehavior Technician1639751878
  4. Sandra Castillo, LVNLicensed Vocational Nurse1669951547
  5. Tabitha Castillo, DPTPhysical Therapist1205517596
  6. Theresa Castillo, RPHPharmacist1619332699
  7. Tiffanie CastilloMental Health Counselor1043904238
  8. Valarie Castillo, BSN, RNRegistered Nurse1245158922
  9. Victor Castillo, PHD., MS., LCDCAddiction (Substance Use Disorder) Counselor1679954689
  10. Victoria CastilloBehavior Technician1679364186
  11. Yolanda CastilloHearing Instrument Specialist1386339190
  12. Zelvia CastilloSocial Worker1720925134
  13. Lizbet Castillo Gonzalez, FNP-CFamily Nurse Practitioner1215885199
  14. Blanca Castillo OchartElectroneurodiagnostic Specialist/Technologist1861848186
  15. Claudia Castillo Paredes, MDInfectious Disease Physician1801141387
  16. Leslie Castillo Sanchez, FNP-BCFamily Nurse Practitioner1164061297
  17. Giovanni Castillo-Gomez, LPCProfessional Counselor1164316758
  18. Edward Castillon, D.D.S.General Practice Dentistry1922150879
  19. Lisa Castle, CCC-SLPSpeech-Language Pathologist1871115725
  20. Scott CastleChiropractor1487289682
  21. Dolores CastorSpeech-Language Pathologist1295909356
  22. Jessica Castorena, RN, NPCritical Care Pediatric Nurse Practitioner1629220140
  23. Rosemary Castoreno, MDInternal Medicine Physician1225135957
  24. Mandy Castrillon, RNRegistered Nurse1396563318
  25. Alex CastroBehavior Technician1609765015
  26. Amy CastroSpeech-Language Assistant1891293312
  27. Anna Castro, FNPFamily Nurse Practitioner1841744315
  28. Caleb Castro, OTDOccupational Therapist1972276301
  29. Carmen CastroBehavior Technician1134801541
  30. Casey CastroRegistered Nurse1265269435
  31. Chelsea Castro, SLP-ASSISTANTSpeech-Language Assistant1366194417
  32. Christine Castro, OTRPediatric Occupational Therapist1477931590
  33. David Castro, MDPediatrics Physician1093702433
  34. Deborah CastroCounselor1518504539
  35. Emilia CastroBehavior Technician1063033538
  36. Esther Castro, LCSWClinical Social Worker1518471051
  37. Esther CastroPharmacy Technician1912596537
  38. Geraldine Castro, OTR/LOccupational Therapist1568642148
  39. Isaiah Castro, LMTMassage Therapist1053202671
  40. James Castro, LPCProfessional Counselor1730122979
  41. Janet CastroPharmacy Technician1154799880
  42. Jeremiah Castro, PTAPhysical Therapy Assistant1093182008
  43. Jesse Castro, LCDCAddiction (Substance Use Disorder) Counselor1265784573
  44. Josue Castro, LCSWMental Health Counselor1467316406
  45. Julia Castro, CGCGenetic Counselor (M.S.)1093405938
  46. Keyshawn Castro, BCBABehavior Analyst1629844394
  47. Kristen Castro, PA-CMedical Physician Assistant1194311852
  48. Lauryn Castro, SLPSpeech-Language Pathologist1760170666
  49. Liliana Castro, LVNLicensed Vocational Nurse1063912376
  50. Lisa Castro, NPNurse Practitioner1750755484

The largest Texas cities

  1. Houston61,221
  2. Dallas36,304
  3. Austin26,585
  4. Fort Worth15,511
  5. El Paso11,091

All of Texas →

How to read this directory

San Antonio, Texas appears in the CMS National Plan and Provider Enumeration System with 37,749 registered healthcare providers spanning 25 or more distinct NUCC-taxonomy specialties. This count includes every individual clinician who has applied for an NPI and listed a practice address in San Antonio - physicians, dentists, nurse practitioners, physician assistants, chiropractors, physical therapists, optometrists, psychologists, podiatrists, and every other credentialed provider type CMS tracks. It does not measure hospital beds, urgent-care capacity, or whether a given clinic is accepting new patients; it measures the pool of professionals with current NPI enrollment and a San Antonio practice location on file. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

The provider mix in San Antonio is weighted toward Behavior Technician (2,756 clinicians, followed by Student in an Organized Health Care Education/Training Program with 1,911 and Professional Counselor with 1,820). That distribution reflects how NPPES records specialty: providers self-select a primary taxonomy code, so a family physician who also practices geriatrics will show up under whichever NUCC code they registered first. Relative to Texas's population, San Antonio reports roughly 123.8 providers per 100,000 residents using the state-level denominator, which is a rough proxy rather than a precise access-to-care measurement; the true catchment area of any {cityName} clinician extends beyond the municipal boundary.

For San Antonio patients, this directory is most useful as a starting shortlist. Important: PlainDoctor is a directory of publicly available CMS government data, not a review site, a ranking, or medical advice. NPPES data is self-reported and refreshed monthly; call the practice directly to confirm the provider is still there, accepts your insurance, and is taking new patients.

For informational purposes only; this directory is not medical advice and not a substitute for checking a license. See also: how to find a doctor and how to verify one.

Common questions

How many doctors are in San Antonio, TX?

There are 37,749 registered healthcare providers in San Antonio, TX, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in San Antonio?

The most common specialties in San Antonio are Behavior Technician, Student in an Organized Health Care Education/Training Program, Professional Counselor, Licensed Vocational Nurse, Pharmacist. Behavior Technician has the most providers with 2,756.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov). Records are self-reported registrations, not licenses.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.