NPPES file of Aug 9, 2026

Doctors and health care providers in Placentia, CA

1,002 individual NPPES records list a practice address in Placentia, 188th of 812 California cities. The largest group is behavior technician: 275, 27% of the city's records, against 18% across California. Page 19 of 21.

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

The 8 largest groups in Placentia

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

Placentia in California

  • Rank in California188th of 812 cities by records
  • Share of the state0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups40.4% of all records

Compared with California as a whole, Placentia has 5.7× the state's share of occupational therapy assistant records and 0.26× its share of student in an organized health care education/training program records.

Providers in Placentia, alphabetically

  1. Paul ThieleBehavior Technician1639013477
  2. Amanda Thielen, OTD, OTR/LOccupational Therapist1710519814
  3. David Thomas, MDEmergency Medicine Physician1083705628
  4. Duane Thomas, D.C.Chiropractor1760730402
  5. Robert Thomas, O.D.Optometrist1205914686
  6. Jenna ThompsonSpeech-Language Assistant1093433005
  7. Nathaly Toledo LandaBehavior Technician1992636567
  8. Jason TolentinoBehavior Technician1609462613
  9. Maria Toriz, PSY.D.Rehabilitation Counselor1073780474
  10. Shannon TorresBehavior Technician1720913593
  11. Barbara Tran, DDSDentist1548271737
  12. Catherine TranStudent in an Organized Health Care Education/Training Program1295671451
  13. Jasmine TranBehavior Technician1487371373
  14. Kimberly Anne Tran, DNP, APRN, FNP-CFamily Nurse Practitioner1326870502
  15. Megan TranBehavior Technician1518778984
  16. Michael Tran, M.D.Surgery Physician1649591454
  17. Thien-Van TranBehavior Technician1821756669
  18. Trung Tran, BABehavior Technician1871053041
  19. Jennifer Treadway-Molle, M.A., LMFTMarriage & Family Therapist1154343085
  20. Tran TrinhPharmacist1740768456
  21. Joel Trotter, M.D.Infectious Disease Physician1578690343
  22. Vincent TruongBehavior Technician1497488134
  23. Sue Ann Tumakay, PA-CPhysician Assistant1003863341
  24. Natally TurciosPhysical Therapist1326409749
  25. Madison UdaniBehavior Technician1598696700
  26. Sara UrsenbachDay Training/Habilitation Specialist1912664749
  27. Luis Valdez SeguraMassage Therapist1558086512
  28. Leah Valencia, M.S., OTR/LOccupational Therapist1720448426
  29. Paola VallejoBehavior Technician1417748484
  30. Kayla Van Dieren, PTAPhysical Therapy Assistant1093369191
  31. Kimberly Vander Dussen, PSY. D.Clinical Psychologist1003968066
  32. Martha Vandeventer, R.N.Registered Nurse1083909899
  33. Susan Varghese, PH.D, LPCCProfessional Counselor1205218260
  34. Liza VasquezDay Training/Habilitation Specialist1205560620
  35. Alyssa VelascoBehavior Technician1063076966
  36. Aileen Velasquez, FNP-BCNurse Practitioner1326733015
  37. Elsie VenegasBehavior Technician1952032914
  38. Josue VergaraSchool Counselor1336080555
  39. Marielle VillaflorRehabilitation Practitioner1407589179
  40. Leticia VillalvaPsychologist1164853180
  41. Karen Villanueva, MS, OTR/LOccupational Therapist1780245225
  42. Maria Ella Rica Villanueva, OTR/LOccupational Therapist1356753669
  43. Lisa Villarreal, MS, CCC-SLPSpeech-Language Pathologist1417812330
  44. Veronica ViramontesDay Training/Habilitation Specialist1982164307
  45. John Patrick Vitug, BACHELORSBehavior Technician1629539689
  46. Kevin VivasDay Training/Habilitation Specialist1033955778
  47. Melissa Vizcarra, LCSWClinical Social Worker1487574505
  48. Hanhngoc Vo, DDSGeneral Practice Dentistry1376675447
  49. Thach Vo, DMDGeneral Practice Dentistry1154462109
  50. Lindsay VolkerAddiction (Substance Use Disorder) Counselor1922394428

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

Placentia, California appears in the CMS National Plan and Provider Enumeration System with 1,002 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 Placentia - 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 Placentia 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 Placentia is weighted toward Behavior Technician (275 clinicians, followed by Marriage & Family Therapist with 66 and Speech-Language Pathologist with 64). 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, Placentia reports roughly 2.6 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, Addiction (Substance Use Disorder) Counselor is the most prominent one with no provider currently listing a Placentia practice address, a coverage gap Placentia patients typically fill by traveling to a larger nearby hub.

For Placentia 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 Placentia, CA?

There are 1,002 registered healthcare providers in Placentia, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Placentia?

The most common specialties in Placentia are Behavior Technician, Marriage & Family Therapist, Speech-Language Pathologist, Physical Therapist, Pharmacist. Behavior Technician has the most providers with 275.

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.