NPPES file of Aug 9, 2026

Doctors and health care providers in Tustin, CA

2,221 individual NPPES records list a practice address in Tustin, 97th of 812 California cities. The largest group is marriage & family therapist: 276, 12% of the city's records, against 6% across California. Page 31 of 45.

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

The 8 largest groups in Tustin

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

Tustin in California

  • Rank in California97th of 812 cities by records
  • Share of the state0.2% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups29.5% of all records

Compared with California as a whole, Tustin has 3.4× the state's share of chiropractor records and 0.70× its share of behavior technician records.

Providers in Tustin, alphabetically

  1. Rudy Ortiz, RNRehabilitation Practitioner1508657446
  2. Sylvia Ortiz, LCSWClinical Social Worker1134460579
  3. Monica Ortiz RoblesBehavior Analyst1891517603
  4. Allison Osburn-CorcoranMarriage & Family Therapist1700045432
  5. Angelina OsorioRehabilitation Practitioner1134018898
  6. Lisa Osterman, LMFTMarriage & Family Therapist1598906851
  7. Leonard Ostrowski, DDSDentist1225276504
  8. Hannah Ostunio, APCCMental Health Counselor1710811138
  9. Julia Ostunio, AMFTMarriage & Family Therapist1609736495
  10. Jerry Oswald, PHARMDPharmacist1003574963
  11. Matthew OuelletteAddiction (Substance Use Disorder) Counselor1841981800
  12. Jennifer Overley, MSW, LCSWClinical Social Worker1922284322
  13. Denise Owens, ASSOCIATE MFTMarriage & Family Therapist1447915848
  14. Joseph Pacelli, D.C.Chiropractor1891701413
  15. Cesar Pacheco, LMFTMarriage & Family Therapist1124703244
  16. Jasen Pacis, OTR/LOccupational Therapist1467158980
  17. Allison PadeBehavior Technician1366002123
  18. David Padilla, RADT-IBehavior Technician1497530703
  19. Elsa PadillaRehabilitation Practitioner1285521344
  20. Stephanie Padilla, ASWSocial Worker1275188476
  21. Valerie PadronBehavior Analyst1285451955
  22. Karen PaePharmacist1295481448
  23. Lisa PageMarriage & Family Therapist1033620166
  24. Mikayla PageMarriage & Family Therapist1225857279
  25. Brian PahedBehavior Technician1194281279
  26. Young Pak, PHARMDPharmacist1003625021
  27. Roberto PalaciosMental Health Counselor1164082160
  28. Edward Pallotta, PH.D.Clinical Psychologist1174754634
  29. Christina Palmer, FNPPrimary Care Nurse Practitioner1588499214
  30. Matthew PalmerRehabilitation Practitioner1447040522
  31. Jacqueline Paquette, DMDGeneral Practice Dentistry1396230967
  32. Michael Paquette, D.D.S.General Practice Dentistry1598784977
  33. Yasmeen PardoMarriage & Family Therapist1710726757
  34. Angela Park, NPFamily Nurse Practitioner1386323574
  35. Christopher Park, CPOProsthetist1184364887
  36. Dongsuk Park, D.D.S.Dentist1497817514
  37. Dyani Park, RBT, BABehavior Technician1871059949
  38. Ellie ParkRegistered Nurse1639711880
  39. Eunice Park, CCC-SLPSpeech-Language Pathologist1366181091
  40. Hans Park, MDGeneral Practice Physician1386718377
  41. Joe Park, DC, CCSPChiropractor1790734572
  42. John Park, DCChiropractor1811265697
  43. Jumi ParkBehavior Technician1134934201
  44. Paul Park, LMFTMarriage & Family Therapist1932616034
  45. Rack Joon Park, L.ACAcupuncturist1659712487
  46. Se ParkAcupuncturist1275178055
  47. Michelle Parsons, DPT, PT, ATCPhysical Therapist1427644384
  48. Harshini Paruchuru, DDSDentist1295624765
  49. Joseph PascalBehavior Technician1801641220
  50. Mary Pasdar, RNPAdult Health Clinical Nurse Specialist1326332313

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

Tustin, California appears in the CMS National Plan and Provider Enumeration System with 2,221 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 Tustin - 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 Tustin 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 Tustin is weighted toward Marriage & Family Therapist (276 clinicians, followed by Behavior Technician with 273 and Clinical Social Worker with 106). 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, Tustin reports roughly 5.7 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 Tustin practice address, a coverage gap Tustin patients typically fill by traveling to a larger nearby hub.

For Tustin 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 Tustin, CA?

There are 2,221 registered healthcare providers in Tustin, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Tustin?

The most common specialties in Tustin are Marriage & Family Therapist, Behavior Technician, Clinical Social Worker, General Practice Dentistry, Chiropractor. Marriage & Family Therapist has the most providers with 276.

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.