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 39 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. Carlos JaureguiStudent in an Organized Health Care Education/Training Program1104319656
  2. Jason Noel JavierLicensed Vocational Nurse1609220193
  3. Melanie Jedrusiak, O.D.Optometrist1700071834
  4. Brianna JeffersonBehavior Technician1366148439
  5. Donna Jefferson, ICMCase Manager/Care Coordinator1417454760
  6. Monik Jefferson, NPFamily Nurse Practitioner1043730377
  7. Tamesha Jefferson, MS, ATCStudent in an Organized Health Care Education/Training Program1720334451
  8. Frankie JenkinsBehavior Analyst1801661780
  9. Nicole Jenkins, MFTIMarriage & Family Therapist1891188942
  10. Sherry JenkinsRegistered Nurse1073233094
  11. Kyra JenningsRehabilitation Practitioner1386013720
  12. Jeanine Jensen, DPTPhysical Therapist1609065325
  13. Jill Jepson, FNP-CFamily Nurse Practitioner1023132990
  14. Biltishia JesterCommunity Health Worker1649638784
  15. Helen JewClinical Psychologist1972885390
  16. Christy JimenezRehabilitation Practitioner1376051649
  17. Desiree JimenezAddiction (Substance Use Disorder) Counselor1174332399
  18. Karen Jimenez, RNAmbulatory Care Registered Nurse1780558650
  19. Miriam Jimenez, ACSWClinical Social Worker1083949366
  20. Vikas Jindal, MDOccupational Medicine Physician1023285244
  21. Vanessa Jiroutek, B.S.Marriage & Family Therapist1265790745
  22. Alex Jo, PHARMDPharmacist1215543384
  23. Rebecca JohannesCommunity Health Worker1487219804
  24. Alana JohnsonBehavior Technician1093435042
  25. Alexandria Johnson, M.S.W.Mental Health Counselor1285920165
  26. Alonzo Johnson, AMFTStudent in an Organized Health Care Education/Training Program1356229843
  27. Angela JohnsonRespiratory/Developmental/Rehabilitative Specialist/Technologist1245707900
  28. Briana JohnsonAddiction (Substance Use Disorder) Counselor1194322487
  29. Candice JohnsonStudent in an Organized Health Care Education/Training Program1699172874
  30. Chester JohnsonRehabilitation Practitioner1629480397
  31. Christopher Johnson, B.A.Case Manager/Care Coordinator1154695690
  32. Courtney JohnsonStudent in an Organized Health Care Education/Training Program1588449128
  33. Daisha JohnsonAddiction (Substance Use Disorder) Counselor1295549608
  34. Darcia Johnson, MSProfessional Counselor1558861658
  35. Delilah Johnson, CADC 1Addiction (Substance Use Disorder) Counselor1831704626
  36. Denise JohnsonClinical Social Worker1346530946
  37. Dewayne JohnsonMental Health Counselor1609176098
  38. Dominique JohnsonLicensed Vocational Nurse1053808410
  39. Erica Johnson, ACSW33109Clinical Social Worker1376046722
  40. Frances JohnsonOther Technician1306347836
  41. Holly JohnsonAddiction (Substance Use Disorder) Counselor1154975720
  42. Jacqueline JohnsonCommunity Health Worker1457008633
  43. James JohnsonMarriage & Family Therapist1275320020
  44. Jennifer JohnsonLicensed Vocational Nurse1447702873
  45. Kimberly JohnsonProfessional Counselor1720960404
  46. Kristina JohnsonAddiction (Substance Use Disorder) Counselor1578938551
  47. Kwaichang JohnsonCommunity Health Worker1982307971
  48. Lauren JohnsonRegistered Nurse1346030277
  49. Leslie Johnson, RNRegistered Nurse1720569643
  50. Marina Johnson, LCSWClinical Social Worker1790283877

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.