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 50 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. Luz MartinezBehavior Technician1366337149
  2. Maria MartinezBehavior Technician1174082598
  3. Maria Martinez, NURSE PRACTITIONERFamily Nurse Practitioner1538749486
  4. Maria MartinezCase Manager/Care Coordinator1942959705
  5. Maribel Martinez, MEDICAL ASSISTANTMedical Physician Assistant1497586796
  6. Miguel Martinez, MSWClinical Social Worker1982100954
  7. Nancy Martinez, PSYDMental Health Counselor1417412669
  8. Patricia MartinezRehabilitation Practitioner1427246388
  9. Rebecca Martinez, AABehavior Technician1750840229
  10. Samuel MartinezDay Training/Habilitation Specialist1811355951
  11. Sarah MartinezCase Manager/Care Coordinator1114441847
  12. Sergio MartinezRehabilitation Practitioner1700298478
  13. Susana Martinez, CLVNLicensed Vocational Nurse1336855790
  14. Veronica MartinezRehabilitation Practitioner1477201499
  15. Veronica MartinezAmbulatory Care Registered Nurse1740996685
  16. Xiomara MartinezSpeech-Language Assistant1821641077
  17. Yvonne MartinezCase Manager/Care Coordinator1588363626
  18. Zendi MartinezCase Manager/Care Coordinator1578210126
  19. Maria Martinez MoraRehabilitation Practitioner1235003336
  20. Maria Martinez RodriguezStudent in an Organized Health Care Education/Training Program1922765916
  21. Katherine Martinez VazquezBehavior Technician1871328542
  22. Ashley Marwah-FrazierLicensed Vocational Nurse1356104087
  23. Munassi Masih, P.TPhysical Therapist1316166135
  24. Karen Mason, LCSWClinical Social Worker1093853590
  25. Lakeshia Mason, PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1740096189
  26. Daniel Massari, DCChiropractor1538188180
  27. Deseray MataCommunity Health Worker1316720063
  28. Matthew MataCommunity Health Worker1144835729
  29. Pedro MateoPeer Specialist1922883537
  30. Richard Mathews, PH.D. IN RELIGIONMarriage & Family Therapist1992478994
  31. Arron MatthewsPeer Specialist1972494136
  32. Marilyn Matthews, RNRegistered Nurse1780307694
  33. Nicole MatthewsSocial Worker1891564985
  34. Tadra MatthewsBehavior Technician1568293090
  35. Crystal MattsonBehavior Technician1720934540
  36. Berna Mayer, RN, MSN, CFNPFamily Nurse Practitioner1598876690
  37. Diyla MaymounPharmacist1871965715
  38. Jaiden MayoBehavior Technician1700744844
  39. Corina MayorgaAddiction (Substance Use Disorder) Counselor1255109690
  40. Chris Mays, C20591214Addiction (Substance Use Disorder) Counselor1710752712
  41. Matthew MazasCase Manager/Care Coordinator1467048116
  42. Joyce MbelaRegistered Nurse1457125486
  43. Mary Mbolo, RNRegistered Nurse1457166308
  44. Anna Marie Mc Murtry, CCAPP R1420470221Addiction (Substance Use Disorder) Counselor1801568829
  45. Brittany McAllisterCase Manager/Care Coordinator1750772513
  46. Mariah McAmishSpeech-Language Pathologist1396481875
  47. Krista McBayne, MDPediatrics Physician1770711533
  48. Vicki McBride, D.C.Chiropractor1518087451
  49. Danielle McBride-Franklin, LVNLicensed Vocational Nurse1265164925
  50. Georgia May McCabe, M.S., CCC-SLPSpeech-Language Pathologist1487541678

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.