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 37 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. Jaime Horrice, CI34880222Addiction (Substance Use Disorder) Counselor1972211191
  2. Russell HortonBehavior Technician1144091638
  3. Zeneida HouchenRegistered Nurse1376065565
  4. Reginio Hough, DCChiropractor1588326953
  5. Catherine Houghton, M.A., MFTMarriage & Family Therapist1497886006
  6. Leonard HoulkerAddiction (Substance Use Disorder) Counselor1588068613
  7. Cathy House, MA, LMFTMental Health Counselor1275672388
  8. Joseph Houseman, D.CChiropractor1720068331
  9. Marsha Houston, LCSWClinical Social Worker1588775787
  10. Rendel Houston, MDUrology Physician1457344350
  11. Marie Hovsepian, PHARM.D.Pharmacist1992254544
  12. Armani HowardBehavior Technician1104502228
  13. David Howard, D.C.Chiropractor1487936084
  14. Lisa Howard, MFTMental Health Counselor1275626707
  15. Robert Howard, PHDMental Health Counselor1306942388
  16. Sedreia HowardBehavior Technician1891641601
  17. An Chih Hsieh, M.D., MPHFamily Medicine Physician1356877377
  18. Chenchia HsuPharmacist1578976932
  19. Ethan HsuInternal Medicine Physician1982270401
  20. Pei Hsin Hsu, FNPFamily Nurse Practitioner1831909068
  21. Ting-Ting HsuSpeech-Language Pathologist1265369169
  22. Annie Hu, PHARMDPharmacist1780248492
  23. Troy HubbardAttendant Care Provider1801262449
  24. Duane HublerSocial Worker1407285554
  25. Janeen HuertaBehavior Analyst1669235503
  26. Lenzie HuffmonBehavior Technician1104652197
  27. Nancy Huffstetler, RDRegistered Dietitian1841251014
  28. Dawn Hughes, RN, MSNPerioperative Clinical Nurse Specialist1750518551
  29. Torey HughesAddiction (Substance Use Disorder) Counselor1285457689
  30. Bing Hui, M.D.Emergency Medicine Physician1235512757
  31. Anahi HuizarBehavior Technician1962197020
  32. Mittie Hull, L.V.NLicensed Vocational Nurse1396194858
  33. Alyssa HumphreyCase Manager/Care Coordinator1093299471
  34. Daniel HuntAddiction (Substance Use Disorder) Counselor1417603036
  35. John Hunter, CADC IIAddiction (Substance Use Disorder) Counselor1396456448
  36. Joseph HunterAddiction (Substance Use Disorder) Counselor1790436806
  37. Michelle HunterBehavior Technician1275494049
  38. Miki Hunter, CATC IAddiction (Substance Use Disorder) Counselor1851078794
  39. Cynthia Hunter-Spears, MA, LAADCAddiction (Substance Use Disorder) Counselor1669948832
  40. Merla Huntley, LCSWClinical Social Worker1750458626
  41. Rebecca HurdProfessional Counselor1265031462
  42. Whitney HutchisonRegistered Nurse1124271234
  43. Bryan Huynh, PHARM D.Pharmacist1225406432
  44. Tai Huynh, PHARM.D.Pharmacist1679841274
  45. Joseph Hwang, M.D.Emergency Medicine Physician1871767244
  46. Lisa Hwang, M.D.Ophthalmology Physician1932376159
  47. Jocelyn Ibarra, RBTBehavior Technician1750115465
  48. Edmund IkeClinical Social Worker1447069109
  49. Marylune ImMarriage & Family Therapist1083921357
  50. Robert Imani, M.D.Psychiatry Physician1639374747

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.