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 44 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. Maritza Reyes - Trevino, BCBABehavior Analyst1538612478
  2. Vanessa Reyes, LcswMental Health Counselor1255920617
  3. Jason Reynolds, D.C.Chiropractor1790012235
  4. Adam ReynosoBehavior Technician1619756749
  5. Anahi Reynoso, SLPASpeech-Language Assistant1225541493
  6. Natalie Reynoso, MS COUNSELINGMarriage & Family Therapist1063038974
  7. Stephanie ReynosoAssistant Behavior Analyst1659045938
  8. Tamer Rezk, MDAddiction Medicine (Family Medicine) Physician1457810285
  9. Brian Rice, LMFTMarriage & Family Therapist1619491222
  10. Derek Rice, O.D.Optometrist1952486417
  11. Marvin Rice, MDDiagnostic Radiology Physician1679605224
  12. Alexandria RichardsonStudent in an Organized Health Care Education/Training Program1538647524
  13. Hal Richardson, MDEmergency Medicine Physician1750439543
  14. Cynthia Rico, BCBABehavior Analyst1477171924
  15. Aaron RidderFamily Medicine Physician1558947903
  16. James Ries, PTPhysical Therapist1407050685
  17. Ferdinand Rimando, NPPsychiatric/Mental Health Nurse Practitioner1144836263
  18. Richard Rison, M.D.Neurology Physician1497730709
  19. Alma Risse, MSW, LCSWClinical Social Worker1417125246
  20. Heather RitchieMental Health Counselor1013385509
  21. Alberto Rivadeneyra, R.N.Community Health Registered Nurse1780926535
  22. Ashley RivasBehavior Analyst1740155423
  23. Erika RivasAddiction (Substance Use Disorder) Counselor1982064499
  24. Marilyn Rivas, LCSWClinical Social Worker1043715949
  25. Nathalie RivasBehavior Analyst1629721675
  26. Wendy Rivas, MAMarriage & Family Therapist1417089533
  27. Jessica Rivera, PA-CFamily Medicine Physician1255840013
  28. Mariah RiveraBehavior Analyst1831881515
  29. Xamayta Rivera MercedSpeech-Language Pathologist1043787062
  30. Sandra Rivera UmanaBehavior Technician1538629043
  31. Hector Riveramelo, D.C., D.A.C.B.R.Chiropractor1588949481
  32. Veronica Rivero TestamarckDentist1235051707
  33. Denise Rizo, MSWSchool Social Worker1508276429
  34. Nicolas RobertsStudent in an Organized Health Care Education/Training Program1700740263
  35. Emma RobertsonSpeech-Language Assistant1689240152
  36. Melissa Robertson, PH.D.Clinical Psychologist1326124959
  37. Katherine Robes, PA-CPhysician Assistant1477820470
  38. Laura Robles-Campos, PH.D.Clinical Psychologist1487675914
  39. Monica Robles-RodriguezMarriage & Family Therapist1215275045
  40. Patricia RochaAddiction (Substance Use Disorder) Counselor1730726738
  41. Melanie RodasRegistered Nurse1255906905
  42. Mary Ellen Rodela, LMFTMarriage & Family Therapist1154445377
  43. James Rodgers, M.D.Specialist1447335880
  44. Adriana RodriguezMarriage & Family Therapist1649513292
  45. Angie Rodriguez, LCSWClinical Social Worker1851282420
  46. April Rodriguez, BSSpeech-Language Assistant1326835430
  47. Denise Rodriguez, RDHDental Hygienist1528494754
  48. Elaine Rodriguez, OTR/LPediatric Occupational Therapist1427386044
  49. Elvia Rodriguez, M.D.Family Medicine Physician1992742738
  50. Imelda Rodriguez, D.P.T.Physical Therapist1063873719

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.