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 14 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. Lien Nguyen, PHARMDPharmacist1669749248
  2. Quang Huy NguyenBehavior Technician1376474312
  3. Thanh-Ai NguyenSpeech-Language Pathologist1881470284
  4. Thuy Nguyen, DDSGeneral Practice Dentistry1285833418
  5. Trinh Nguyen, DDSDentist1861611097
  6. Van Nguyen, DMDDentist1023472123
  7. Vananh Nguyen, MDDiagnostic Radiology Physician1447376785
  8. Vy NinhPharmacist1881394377
  9. April Nino-MotaBehavior Technician1346988359
  10. Makayla NovakBehavior Technician1962337378
  11. Fred Nowroozi, MDPain Medicine (Physical Medicine & Rehabilitation) Physician1760463764
  12. Marco NunezAthletic Trainer1134892698
  13. Ugochukwu NwuwaBehavior Technician1467378497
  14. Jackson O'NeilStudent in an Organized Health Care Education/Training Program1821701020
  15. Zanzi ObegiBehavior Technician1083321137
  16. Tamura OberkramerRegistered Nurse1518896935
  17. Feliciano Ocampo, RPTPhysical Therapist1023327996
  18. Oswaldo OchoaBehavior Analyst1609111707
  19. Ronald OchoaMarriage & Family Therapist1609336874
  20. In Hye OhAcupuncturist1992166078
  21. Estefania Olivares BarajasSpeech-Language Assistant1629711585
  22. Rebeca OlivasSpeech-Language Assistant1902046303
  23. Sydney OlivasBehavior Technician1467394353
  24. Rees Olson, D.D.S.General Practice Dentistry1386725414
  25. Ebuka OmusonBehavior Technician1023935392
  26. Daniella OrozcoBehavior Technician1548086697
  27. Laura Orozco, MA, CCC-SLPSpeech-Language Pathologist1134064751
  28. Lidia OrozcoBehavior Technician1386287647
  29. Brooklyn Ortega, MSW, ASW, PPSSchool Social Worker1003764556
  30. Carlos OrtegaBehavior Technician1053025080
  31. Eden Osborn, BDPsychologist1184314759
  32. Sabrina OsterhoudtSpeech-Language Pathologist1063386324
  33. Emily OuBehavior Technician1356053771
  34. Sierra OudinStudent in an Organized Health Care Education/Training Program1821820036
  35. Branden Owen, PT, DPTPhysical Therapist1629703178
  36. Serena PaciBehavior Technician1336088491
  37. Coralin Kiera PaclebBehavior Technician1760233662
  38. Daisy PadillaBehavior Technician1124665385
  39. Juliette Pairawan, LPCC, LMHC, LPCMental Health Counselor1477065159
  40. Christina PakSpeech-Language Pathologist1508680349
  41. Clarissa PalemonteBehavior Technician1235055005
  42. Rosalia Palomares, MS, LMFTMarriage & Family Therapist1346544046
  43. Lorena ParedesBehavior Technician1447890207
  44. April ParkBehavior Technician1205764321
  45. Lorie Park, OTR/LOccupational Therapist1083384994
  46. Sarah Park, OTR/LOccupational Therapist1831088632
  47. Kristin Parker, LMFTMarriage & Family Therapist1235288168
  48. Marifer ParraBehavior Technician1497593255
  49. Phani Paruchuri, M.DPain Medicine (Anesthesiology) Physician1730272063
  50. Akani PasiganBehavior Technician1366073181

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.