NPPES file of Aug 9, 2026

Doctors and health care providers in Lancaster, CA

4,273 individual NPPES records list a practice address in Lancaster, 49th of 812 California cities. The largest group is behavior technician: 436, 10% of the city's records, against 18% across California. Page 59 of 86.

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).

Lancaster in California

  • Rank in California49th of 812 cities by records
  • Share of the state0.4% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups24.6% of all records

Compared with California as a whole, Lancaster has 4.5× the state's share of peer specialist records and 0.56× its share of physical therapist records.

Providers in Lancaster, alphabetically

  1. Davette OrtizCommunity Health Worker1932619020
  2. Jennifer OrtizBehavior Technician1538734587
  3. Melanie OrtizBehavior Technician1124603436
  4. Miranda OrtizCommunity Health Worker1033803978
  5. Viridiana Ortiz CoronaAssistant Behavior Analyst1801527874
  6. Bernice Osborn, NACase Manager/Care Coordinator1114162112
  7. Blanca OsegueraAddiction (Substance Use Disorder) Counselor1225622160
  8. Yudid Osuna, LCSWClinical Social Worker1033587993
  9. Leyla OtarolaClinical Social Worker1861946261
  10. Dawn OtasowieStudent in an Organized Health Care Education/Training Program1871412247
  11. Osamudiamen Otasowie, CASE MANAGEMENTCase Manager/Care Coordinator1386985240
  12. Martha Ottley, REGISTERED NURSEGeneral Practice Registered Nurse1467973032
  13. Eric Owashi, M.D.Orthopaedic Surgery Physician1396123857
  14. Theodore OwensAddiction (Substance Use Disorder) Counselor1447902507
  15. William OwensCase Manager/Care Coordinator1093872764
  16. Celia OyibuNursing Home Administrator1902567381
  17. Harun Ozer, M.D.Diagnostic Radiology Physician1780815886
  18. Selene PachecoMedical Physician Assistant1114867827
  19. Nancy Pacheco- SosaRehabilitation Practitioner1891974549
  20. Amber Padilla, LMFT138221Marriage & Family Therapist1538776471
  21. Blanca PadillaRehabilitation Practitioner1184085904
  22. Linda Padilla, AA, SUD-RADT1Addiction (Substance Use Disorder) Counselor1952166498
  23. Maryjane PadillaCase Manager/Care Coordinator1881233955
  24. Chickkiah Padmanabhan, MDGeneral Practice Physician1700964657
  25. Ana PaezCounselor1790061620
  26. Laura PagliaroSpeech-Language Assistant1104383736
  27. Nicole Paglione, PSY.D.Clinical Psychologist1679878987
  28. Daniel Paine, PA-CMedical Physician Assistant1669415949
  29. Corrina Palacios, MSWClinical Social Worker1669103412
  30. Danya PalaciosRehabilitation Practitioner1174029813
  31. Dolly PalaciosRehabilitation Practitioner1629687025
  32. Rafael Palacios, ABOCOptician1629773114
  33. Amanda PalenMarriage & Family Therapist1285496471
  34. Diana PalenciaAddiction (Substance Use Disorder) Counselor1255939732
  35. Nicole Palman, M.S. CCC-SLPSpeech-Language Pathologist1144884123
  36. Yen Wen PanOccupational Therapist1043811854
  37. Fabiola Paniagua FrancoMedical Physician Assistant1891434742
  38. Gurnam Pannu, M.D.Anesthesiology Physician1851305502
  39. Ferdinand Panoussi, D.OInternal Medicine Physician1144493131
  40. Paul ParasRegistered Nurse1891401717
  41. Don Parazo, MDFamily Medicine Physician1861505265
  42. Gisela ParedesFamily Nurse Practitioner1629698253
  43. Joseph ParedezCase Manager/Care Coordinator1679356174
  44. Melissa PargaCommunity Health Worker1942710033
  45. Robert PargaCase Manager/Care Coordinator1558919258
  46. Phillip Parhami, DDSDentist1972767606
  47. Andrew Pari, L.C.S.W.Clinical Social Worker1891872164
  48. Sahil Parikh, D.O.Surgery Physician1235450131
  49. Byeong Ho Park, ACUPUNCTURISTAcupuncturist1831623495
  50. Elizabeth ParkMarriage & Family Therapist1053791152

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

Lancaster, California appears in the CMS National Plan and Provider Enumeration System with 4,273 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 Lancaster - 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 Lancaster 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 Lancaster is weighted toward Behavior Technician (436 clinicians, followed by Marriage & Family Therapist with 331 and Addiction (Substance Use Disorder) Counselor with 283). 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, Lancaster reports roughly 11 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 Lancaster 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 Lancaster, CA?

There are 4,273 registered healthcare providers in Lancaster, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Lancaster?

The most common specialties in Lancaster are Behavior Technician, Marriage & Family Therapist, Addiction (Substance Use Disorder) Counselor, Case Manager/Care Coordinator, Clinical Social Worker. Behavior Technician has the most providers with 436.

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.