NPPES file of Aug 9, 2026

Doctors and health care providers in Whittier, CA

2,836 individual NPPES records list a practice address in Whittier, 80th of 812 California cities. The largest group is behavior technician: 272, 10% of the city's records, against 18% across California. Page 49 of 57.

CMS NPPES registry, file of Aug 9, 2026 · method · Verify with CMS →

The 8 largest groups in Whittier

Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.

Whittier in California

  • Rank in California80th of 812 cities by records
  • Share of the state0.3% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups19.8% of all records

Compared with California as a whole, Whittier has 19.1× the state's share of speech-language assistant records and 0.50× its share of mental health counselor records.

Providers in Whittier, alphabetically

  1. Frederick Shum, MDNeonatal-Perinatal Medicine Physician1124166095
  2. Merrill Shum, M.D.Hematology & Oncology Physician1982819702
  3. Mubina Siddiqui, N.PFamily Nurse Practitioner1386049237
  4. Gregory Siegel, DCChiropractor1801800297
  5. Esmeralda Sifuentes, M.S. CCC-SLPSpeech-Language Pathologist1457916058
  6. Frank SigalaMassage Therapist1497447783
  7. Karin Siguenza, MDEmergency Medicine Physician1457989394
  8. Rob Silkensen, OT/LOccupational Therapist1619337540
  9. Eva Sillas, LVNLicensed Vocational Nurse1871971143
  10. Jocelyn Sillas, BISpeech-Language Assistant1932798774
  11. Aneissa SilvaBehavior Technician1952232597
  12. Geraldy SilvaSpeech-Language Pathologist1023765161
  13. Rachel Silva, SLPASpeech-Language Assistant1073388625
  14. Beth Silvey, LCSWClinical Social Worker1346853983
  15. Lea SimerStudent in an Organized Health Care Education/Training Program1548124001
  16. Leo Simi, LMFTMarriage & Family Therapist1144490228
  17. Samantha Simon, SLPASpeech-Language Assistant1689316358
  18. Sharon SinPediatric Occupational Therapist1194382705
  19. Alexander Sinclair, M.D.Plastic and Reconstructive Surgery Physician1407063951
  20. Jaskaran Singh, MDEmergency Medicine Physician1205218278
  21. Rashi SinghSurgery Physician1598328692
  22. Willy Singh, D.O.Nephrology Physician1265587075
  23. Usman Singidas, MDHospitalist Physician1811457559
  24. Valerie Sinkus, PTPhysical Therapist1477504629
  25. Harold Sintov, MDEmergency Medicine Physician1255378147
  26. Alina Skwarcan, CPOOrthotist1851990402
  27. Douglas Slabaugh, DOEmergency Medicine Physician1053359711
  28. Matthew SlaterBehavior Technician1447883806
  29. Robert Slough, M.D.Emergency Medicine Physician1932547809
  30. Alma Smith, MFTIMarriage & Family Therapist1760627608
  31. Amber Smith, PTA PHYSICAL THERAPIPhysical Therapy Assistant1164751814
  32. Barbara SmithCommunity Health Registered Nurse1801287826
  33. Brad Smith, DCChiropractor1437223047
  34. Celine SmithPhysician Assistant1699499657
  35. Kerrigan SmithStudent in an Organized Health Care Education/Training Program1972467447
  36. Benjamin Snow, AMFTMarriage & Family Therapist1033834098
  37. Chad SnyderClinical Social Worker1790172328
  38. Carla SoberanesMassage Therapist1124896519
  39. Teresa Sokol, PA CPhysician Assistant1144213067
  40. Beatriz Sola, PHLEBOTOMISTPhlebotomy Technician1649941378
  41. Robert Solis, RPHPharmacist1982815015
  42. Robert SolisLicensed Psychiatric Technician1245894260
  43. Isabel SollenderBehavior Technician1710840954
  44. Marilyn Sologuren, RNAmbulatory Women's Health Care Registered Nurse1245120930
  45. Claudia SolorioRehabilitation Practitioner1134438641
  46. Gene Soloway, M.D.Obstetrics & Gynecology Physician1134283088
  47. Steven Soltani, DOStudent in an Organized Health Care Education/Training Program1851093975
  48. Pedram Soltanzadeh, DMDGeneral Practice Dentistry1205900438
  49. Rebecca SomaOccupational Therapy Assistant1053072215
  50. Maria Nicole Carmela Sombillo, OTR/LOccupational Therapist1396561239

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

Whittier, California appears in the CMS National Plan and Provider Enumeration System with 2,836 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 Whittier - 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 Whittier 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 Whittier is weighted toward Behavior Technician (272 clinicians, followed by Clinical Social Worker with 149 and Speech-Language Assistant with 141). 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, Whittier reports roughly 7.3 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.

Of California's most common specialties, Case Manager/Care Coordinator is the most prominent one with no provider currently listing a Whittier practice address, a coverage gap Whittier patients typically fill by traveling to a larger nearby hub.

For Whittier 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 Whittier, CA?

There are 2,836 registered healthcare providers in Whittier, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Whittier?

The most common specialties in Whittier are Behavior Technician, Clinical Social Worker, Speech-Language Assistant, Marriage & Family Therapist, Pharmacist. Behavior Technician has the most providers with 272.

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.