NPPES file of Aug 9, 2026

Doctors and health care providers in San Marcos, CA

1,985 individual NPPES records list a practice address in San Marcos, 113th of 812 California cities. The largest group is behavior technician: 553, 28% of the city's records, against 18% across California. Page 2 of 40.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

San Marcos in California

  • Rank in California113th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups37.8% of all records

Compared with California as a whole, San Marcos has 4.9× the state's share of school counselor records and 0.49× its share of case manager/care coordinator records.

Providers in San Marcos, alphabetically

  1. Jeffrey Allred, D.D.S.Dentist1194964411
  2. Joshua AlmadinRegistered Nurse1972278661
  3. Leon Altamirano, PSY.D.Psychologist1619271517
  4. Marisa Alunni, M.D.Obstetrics & Gynecology Physician1710298476
  5. Dalila AlvaradoBehavior Technician1588517882
  6. Janelle Alvarado-CortezBehavior Technician1154125227
  7. Alma Alvarez, HHP, CMT, LE, RPMassage Therapist1619716602
  8. Asialyn AlvarezBehavior Technician1598304982
  9. Carolina AlvarezBehavior Technician1235098989
  10. Frank Alvarez, PT, DPTPhysical Therapist1861140337
  11. Sylvia AlvarezBehavior Analyst1023694403
  12. Melissa Alvarez HerreraBehavior Technician1275416802
  13. Inaki Alvarez Yerena RomeroBehavior Technician1881526903
  14. Liliana Alvarez-Martinez, MDFamily Medicine Physician1790833119
  15. Juan Alvergue, M.D.Cardiovascular Disease Physician1346351517
  16. Martha Anahi Amador, PPSSchool Counselor1700744950
  17. Areli Amador-Simpson, MA; PPSSchool Counselor1861329807
  18. Ian Aman, LPCC NCCProfessional Counselor1447707971
  19. Daniel AmayaBehavior Technician1801721105
  20. Christopher Ambrose, M.P.T.Physical Therapist1114977535
  21. Jose AmezcuaBehavior Technician1013700152
  22. Kylie AndruskiBehavior Technician1760139216
  23. Loribette Antonio, F.N.P.Family Nurse Practitioner1467882910
  24. Savannah Appel, NPPediatric Nurse Practitioner1730649187
  25. Carlos AquinoSpecialist1366784704
  26. Rachel ArakawaLactation Consultant (Registered Nurse)1982439675
  27. Griselda ArellanoAddiction (Substance Use Disorder) Counselor1639674583
  28. Cecily Arenas, FNPFamily Nurse Practitioner1700031507
  29. Blanca Arias, LCSWClinical Social Worker1033223649
  30. Lynda Ariella, PHDClinical Psychologist1073518965
  31. Marcela Armas-NunezCounselor1164891305
  32. Annie ArnoldBehavior Technician1801634886
  33. Donna ArreguinMental Health Counselor1457915944
  34. Tomiko ArriagaBehavior Technician1316803539
  35. Katherine Arrogante, DNP, FNP-C, CPNP-CFamily Nurse Practitioner1801775259
  36. Ciera ArroyoBehavior Technician1184459976
  37. Johanna ArroyoBehavior Technician1518642982
  38. Ali Asgari, D.D.S.Pediatric Dentistry1053449439
  39. Lesley Ashford, OTR/LOccupational Therapist1932551611
  40. Michelle Atkins, LCSWSchool Social Worker1881901221
  41. Janice Atkinson, LVNLicensed Vocational Nurse1003408915
  42. Terri Averill Watson, D.C.Chiropractor1760697759
  43. Andy AvilaBehavior Technician1144080821
  44. David Avila, MD, MPHPediatrics Physician1578140919
  45. Quetzalli AvilezClinical Social Worker1689150443
  46. Yaquelin AvilezBehavior Technician1851107338
  47. Leonardo AyalaBehavior Technician1477313054
  48. Mariela AyonBehavior Technician1932020666
  49. Ali AzinOccupational Therapist1336694280
  50. Ashley Azin, MA, MS, LMFTMarriage & Family Therapist1124408018

The largest California cities

  1. Los Angeles69,537
  2. San Diego52,937
  3. San Francisco38,143
  4. Sacramento33,083
  5. San Jose20,925

All of California →

How to read this directory

San Marcos, California appears in the CMS National Plan and Provider Enumeration System with 1,985 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 Marcos - 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 Marcos 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 Marcos is weighted toward Behavior Technician (553 clinicians, followed by Marriage & Family Therapist with 101 and Pharmacist with 96). 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 California's population, San Marcos reports roughly 5.1 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.

Of California's most common specialties, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a San Marcos practice address, a coverage gap San Marcos patients typically fill by traveling to a larger nearby hub.

For San Marcos 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 Marcos, CA?

There are 1,985 registered healthcare providers in San Marcos, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in San Marcos?

The most common specialties in San Marcos are Behavior Technician, Marriage & Family Therapist, Pharmacist, Physical Therapist, Addiction (Substance Use Disorder) Counselor. Behavior Technician has the most providers with 553.

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.