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 3 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. John AlvaradoBehavior Technician1508539628
  2. Juan AlvaradoCommunity Health Worker1215744974
  3. Arnulfo Alvarado Cruz, RNRegistered Nurse1093682155
  4. Sifrido AlvarengaRegistered Respiratory Therapist1033687405
  5. Yahaira AlvarengaBehavior Technician1770358491
  6. David Alvarez, RADTAddiction (Substance Use Disorder) Counselor1245005644
  7. Dominique AlvarezDay Training/Habilitation Specialist1871393611
  8. Keolani AlvarezRehabilitation Practitioner1497534267
  9. Marcela Alvarez, RBTBehavior Technician1407615172
  10. Marlene AlvarezCase Manager/Care Coordinator1831548601
  11. Samantha AlvarezBehavior Technician1528910882
  12. Florcita Alvarez-Galoosian, MDNephrology Physician1225134885
  13. Virginia AlvizoMarriage & Family Therapist1174028690
  14. Howayda Aly, PSYDClinical Psychologist1932229515
  15. Stephanie AmandeCommunity Health Worker1295245389
  16. Kristen Amantine, B.A.Behavior Analyst1912204371
  17. Yolanda Amaya, RNAmbulatory Care Registered Nurse1346760659
  18. Andrew AmbrusOccupational Therapy Assistant1497206437
  19. Herminia Amezcua, MDObstetrics & Gynecology Physician1326282385
  20. Juan AmezcuaClinical Social Worker1285387258
  21. Clemence AmiaCommunity Health Worker1114620028
  22. Sambiz Amini, M.D.Family Medicine Physician1720241961
  23. Celina AnayaBehavior Technician1629908892
  24. Amber AndersonClinical Social Worker1205954344
  25. Barbara AndersonAddiction (Substance Use Disorder) Counselor1063173862
  26. Clarke Anderson, MDPediatric Hematology & Oncology Physician1336247055
  27. Dennis Anderson, LCSWClinical Social Worker1992336044
  28. Harriet Anderson, LMFTMarriage & Family Therapist1437482098
  29. Jared AndersonDay Training/Habilitation Specialist1760142673
  30. Kim AndersonCommunity Health Worker1790511517
  31. Roblek AndersonClinical Social Worker1104525021
  32. Teneisha AndersonBehavior Technician1063147593
  33. Willie Anderson, PA-CPhysician Assistant1497864268
  34. Beatriz Andino-HaydenCase Manager/Care Coordinator1730559758
  35. Cameron AndradeDay Training/Habilitation Specialist1457110918
  36. Jasmine AndradeBehavior Technician1659124139
  37. Monica AndradeStudent in an Organized Health Care Education/Training Program1275991317
  38. Chigolum AneneClinical Social Worker1043864515
  39. Valentin Angles, PHARMDPharmacist1366096414
  40. Moises AnguloStudent in an Organized Health Care Education/Training Program1043820822
  41. Michael Annoreno, LCSWClinical Social Worker1083056634
  42. Bita Ansari, DDSGeneral Practice Dentistry1548808678
  43. Alon Antebi, DOOrthopaedic Trauma Physician1639174816
  44. Tonya Anthony, LCSWClinical Social Worker1497466924
  45. Imani AntwineBehavior Technician1750274643
  46. Jocelyn AparicioRehabilitation Practitioner1427680578
  47. Sofia ApodacaBehavior Technician1598452898
  48. Cintia AquinoRehabilitation Practitioner1952106056
  49. Emily AquinoBehavior Technician1477252971
  50. Teresa AquinoCommunity Health Worker1831893197

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.