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 72 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. Alejandra ServinRehabilitation Practitioner1356777189
  2. Samantha ServinAddiction (Substance Use Disorder) Counselor1235998519
  3. Sepehr Setareh, D.D.SDentist1932275062
  4. Lori ShaferAddiction (Substance Use Disorder) Counselor1023437985
  5. Sherry Shaffer, OTRLOccupational Therapist1528276623
  6. Apurva Shah, M.D.Specialist1467521989
  7. Meena Shah, M.D.Anesthesiology Physician1518945252
  8. Nisha Shah, M.D.Allergy & Immunology Physician1437300407
  9. Nitin Shah, MDOrthopaedic Surgery Physician1134108103
  10. Vrej Shahmoradian, DDSGeneral Practice Dentistry1316044134
  11. Proshat Shahrestany, D.D.S.General Practice Dentistry1922277466
  12. Evelyn ShalabyPharmacist1821880451
  13. Roby ShamasMarriage & Family Therapist1588094940
  14. Bilal Shammout, DDSEndodontics1497968333
  15. Dora Shamooil, MAStudent in an Organized Health Care Education/Training Program1821639808
  16. Mythri Shankar, M.D.Nuclear Medicine Physician1083895262
  17. Ravi Shankar, M.D.Pulmonary Disease Physician1093806754
  18. Francine Shanks, RNRegistered Nurse1255853248
  19. Terrie ShanksCommunity Health Worker1144996273
  20. Vijay Shanmugam, M.D.Neurology Physician1174576839
  21. Shawn SharkeyCommunity Health Worker1871008599
  22. Ruhana Sharma, BABehavior Technician1811456148
  23. Eric Shaver, D.C.Chiropractor1285800540
  24. Carrie Shaw, RNAmbulatory Care Registered Nurse1366962326
  25. Jtaun ShawCase Manager/Care Coordinator1568052025
  26. Kathryn SheddenNurse's Aide1407635097
  27. Felecia Sheffield, PHDClinical Psychologist1124137161
  28. Deborah SheltonCase Manager/Care Coordinator1093286387
  29. Shade Shelton, DPTPhysical Therapist1558720607
  30. Sheila Shelton, REGISTER NURSEAdult Psychiatric/Mental Health Registered Nurse1992517312
  31. Hong Shen, M.D.Anatomic Pathology & Clinical Pathology Physician1285979724
  32. Rana Shenoy, M.D.Infectious Disease Physician1225136922
  33. Aziza ShepherdMarriage & Family Therapist1154591493
  34. Daniel Shepherd, PA-CFamily Medicine Physician1952330763
  35. Patrick Shepherd, M.D.Pediatrics Physician1972896157
  36. Deborah SherengoStudent in an Organized Health Care Education/Training Program1699455618
  37. Justin Sherfey, DOOrthopaedic Surgery Physician1689786873
  38. Fay Sherwood, IMFTMarriage & Family Therapist1659697688
  39. Jessica Shevlin, AMFTMarriage & Family Therapist1366206369
  40. Teagan ShibleyLicensed Vocational Nurse1386346708
  41. Tara Shields, O.D.Optometrist1609056852
  42. Cecil Shikiya, DOFamily Medicine Physician1861760977
  43. Sun Bo ShimMarriage & Family Therapist1275855090
  44. Michiko ShimizuCase Manager/Care Coordinator1649552118
  45. Elizabeth Shimoi, CERTIFIED OCCUPATIONOccupational Therapy Assistant1326684309
  46. Esther Shimokochi, LVNLicensed Vocational Nurse1942766654
  47. Chloe ShinNurse Practitioner1710522180
  48. Deepak Shivaram, M.D.Internal Medicine Physician1588655450
  49. Jessica Shlager, OTROccupational Therapist1962857235
  50. Svetlana Shnaider, NPFamily Nurse Practitioner1972273381

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.