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 73 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. Kristina ShoemakerRegistered Nurse1700704640
  2. Corinna Shoji, RPHPharmacist1730627266
  3. Racquel Shores, CASE MANAGERCounselor1114184991
  4. Tika ShouldersClinical Social Worker1558729699
  5. Jaime ShullickPhysical Medicine & Rehabilitation Physician1720537822
  6. Barbara Shultz, SUDCC IIAddiction (Substance Use Disorder) Counselor1649690454
  7. Gregory ShumardCommunity Health Worker1437585650
  8. Randy SibolePhysical Therapy Assistant1104215995
  9. Chris SicaPeer Specialist1437866043
  10. Maria Sical, RBTBehavior Technician1649004946
  11. Janeth Sicam, PHYSICAL THERAPISTSPhysical Therapist1982369500
  12. Donald Sicher, P.A.-CPhysician Assistant1316049968
  13. Shahid Siddiqui, MDInternal Medicine Physician1639276140
  14. Qanwarpartap Sidhu, MDDermatology Physician1093341968
  15. Sonia SierraMarriage & Family Therapist1356078919
  16. Tiara Sigaran, MPHCommunity Health Worker1083361463
  17. Ryan Silas-GrovesBehavior Technician1891439287
  18. Michael Silberstein, M.D.Pediatric Radiology Physician1124065230
  19. Elliot SilerAthletic Trainer1013450865
  20. Alesa SilvaBehavior Technician1568922136
  21. Allen SilvaMedical Physician Assistant1831039627
  22. Cindy SilvaSocial Worker1225960917
  23. Jacquelyn Silva, RBTBehavior Technician1700610003
  24. Juan SilvaSocial Worker1578497384
  25. Marvin Silver, PHARMACISTPharmacist1073828471
  26. Clifford Silverman, O.D.Optometrist1952372401
  27. Alexia SimmonsDoula1063228799
  28. Michelle SimmonsDay Training/Habilitation Specialist1366368193
  29. Marc Simon, RASAddiction (Substance Use Disorder) Counselor1669884706
  30. Destiny SimpkinsBehavior Technician1528790367
  31. Gurcharn Singh, MDGastroenterology Physician1871670091
  32. Pradeep Singh, M.D.Specialist1891737656
  33. Shalini Singh, D.D.S.Periodontics1518981646
  34. Shelly Singh, D.O.Gastroenterology Physician1760778922
  35. Anupam Singla, MDInternal Medicine Physician1356379275
  36. Suresh Singla, M.D.Pediatrics Physician1174712525
  37. Valen SinisgalliPhysical Therapist1861108060
  38. Ashley Sinzun, LVNLicensed Vocational Nurse1811769698
  39. Christopher Siplon, M.D.Pediatrics Physician1124415468
  40. Alexa SirakiPharmacist1053235549
  41. Natalie Sisneros, PH.DStudent in an Organized Health Care Education/Training Program1720898471
  42. Kumarasamy Sivakumar, MDInternal Medicine Physician1083762884
  43. Kanagaratnam Sivalingam, M.D.Geriatric Medicine (Internal Medicine) Physician1578578365
  44. Dylon SkeenRehabilitation Practitioner1649696675
  45. Sahara-Lynn Skipper, CADC IAddiction (Substance Use Disorder) Counselor1760240006
  46. Susan Slosing, RDHAPDental Hygienist1073810867
  47. Brenda Smethurst, O.T.Occupational Therapist1033320908
  48. Andrea Smice, APCCMental Health Counselor1992554513
  49. Johnny Smilie, AA/ AOD INTERNAddiction (Substance Use Disorder) Counselor1740704030
  50. Almira Smith, LVN/LPNLicensed Vocational Nurse1194420349

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.