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 61 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. Cynthia PerezCommunity Health Worker1982978920
  2. Elena PerezStudent in an Organized Health Care Education/Training Program1346029055
  3. Elisa PerezBehavior Technician1285350868
  4. Emily PerezDay Training/Habilitation Specialist1437950235
  5. Ernel Perez, RNAmbulatory Care Registered Nurse1164397659
  6. Giovanny PerezDay Training/Habilitation Specialist1275120297
  7. Hector PerezStudent in an Organized Health Care Education/Training Program1801372107
  8. Iren PerezBehavior Technician1821726274
  9. Jacqueline PerezBehavior Technician1124693718
  10. Jessica PerezClinical Social Worker1962985572
  11. Manuel Perez, CPRPRehabilitation Practitioner1568601730
  12. Maria PerezClinical Social Worker1366069189
  13. Maria Concepcion Perez, RPTPhysical Therapist1023058120
  14. Maricela PerezBehavior Technician1144894411
  15. Michelle PerezAddiction (Substance Use Disorder) Counselor1396216248
  16. Nereida Perez, NPFamily Nurse Practitioner1558138024
  17. Ricardo Perez, RBTBehavior Technician1083448591
  18. Shelle Perez, CMTMassage Therapist1164346912
  19. Yecenia PerezAthletic Trainer1578399945
  20. Yvette PerezCase Manager/Care Coordinator1740632066
  21. Lesly Perez AlvizurezAddiction (Substance Use Disorder) Counselor1659936128
  22. Yaritza Perez CortezBehavior Technician1780547372
  23. Ximena Perez GarciaGeneral Practice Dentistry1245109594
  24. Jessy Perez-NavaBehavior Technician1437901923
  25. Inyaisha PerkinsLicensed Vocational Nurse1659224863
  26. Marlena PerrinPsychiatric/Mental Health Registered Nurse1659157212
  27. Anthony PerryPeer Specialist1174494884
  28. Brittany PerryCounselor1316591159
  29. Sarah PerryCase Manager/Care Coordinator1063828168
  30. Yvette PerryDoula1932819745
  31. Kumaravel Perumalsamy, M.D.Gastroenterology Physician1851484323
  32. Gerald PetersAddiction (Substance Use Disorder) Counselor1558615112
  33. Michael PetersAddiction (Substance Use Disorder) Counselor1508157579
  34. Yaron Peters, DPTPhysical Therapist1679827083
  35. Richard Petersen, ODOptometrist1407867161
  36. Courtney PetersonAddiction (Substance Use Disorder) Counselor1295600229
  37. Destiny Peterson, BSN RNPsychiatric/Mental Health Registered Nurse1093692287
  38. Jammie PetersonClinical Social Worker1518259605
  39. Jeanice Peterson, LEPSchool Psychologist1194374165
  40. Lise PetersonRehabilitation Practitioner1487803110
  41. Paul PetersonBehavior Technician1003795915
  42. Alexander PetricevicPeer Specialist1891502118
  43. Pavel Petrik, MDTrauma Surgery Physician1417044868
  44. Mark PfostMarriage & Family Therapist1568749463
  45. Quynh Phan, ODCorneal and Contact Management Optometrist1538151873
  46. Tuan Phan, MDFamily Medicine Physician1689633992
  47. Anicka PhillipsCase Manager/Care Coordinator1295576445
  48. Rebecca PhillipsRehabilitation Practitioner1447697529
  49. Seth Phillips, LCSWClinical Social Worker1770779613
  50. Tanyanika Phillips, MDHematology & Oncology Physician1003952151

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.