NPPES file of Aug 9, 2026

Doctors and health care providers in West Covina, CA

2,450 individual NPPES records list a practice address in West Covina, 94th of 812 California cities. The largest group is behavior technician: 820, 33% of the city's records, against 18% across California. Page 48 of 49.

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

The 8 largest groups in West Covina

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

West Covina in California

  • Rank in California94th of 812 cities by records
  • Share of the state0.3% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups41% of all records

Compared with California as a whole, West Covina has 4.9× the state's share of speech-language assistant records and 0.37× its share of mental health counselor records.

Providers in West Covina, alphabetically

  1. Nicole Werdesheim, M.S. BCBABehavior Analyst1194377606
  2. Michael WhisenandBehavior Technician1316704646
  3. Brett WigginsCase Manager/Care Coordinator1649478868
  4. Joan Wild, RNC, NPAmbulatory Women's Health Care Registered Nurse1649492422
  5. Treneta WilkesBehavior Technician1578324760
  6. Betty WilliamsRehabilitation Practitioner1770801383
  7. Cayla WilliamsBehavior Technician1104653187
  8. William Williams, MDSpecialist1972685956
  9. Adelaide Willis, MDFamily Medicine Physician1073561346
  10. Mary Jane Wilson, FNPFamily Nurse Practitioner1467896753
  11. Sone-Seere Wilson, MDEmergency Medicine Physician1194772525
  12. Samuel WinklerBehavior Technician1851080436
  13. Christopher Wissar, MDFamily Medicine Physician1649980327
  14. Carol Wolcott, PA-CMedical Physician Assistant1134522865
  15. Timothy Wolf, C.R.N.A.08/Certified Registered Nurse Anesthetist1003844200
  16. Andrew Wong, O.D.Optometrist1336336304
  17. Felix WongOccupational Therapist1023725330
  18. Jair Wong, MDInternal Medicine Physician1972541266
  19. Kee Wong, M.D.Orthopaedic Surgery Physician1477599553
  20. Li Wong, MDPediatrics Physician1841392032
  21. Porschia WongCase Manager/Care Coordinator1780901645
  22. Tina Wong, M.D.Pediatrics Physician1982093761
  23. Wesley Wong, RNEmergency Registered Nurse1205402955
  24. Sarah Woo, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1801371521
  25. Zion WorkalemahuLicensed Practical Nurse1659916476
  26. Cristie WrightBehavior Technician1679279384
  27. Glenn Wright, BA RASCase Manager/Care Coordinator1194964106
  28. Cho-Ying Wu, M.D.Anesthesiology Physician1891719027
  29. George Wu, DDSProsthodontics1235383183
  30. Hui Ju WuGeneral Practice Dentistry1669366126
  31. Justin WuSpeech-Language Pathologist1821620089
  32. Karen Wu, ODOptometrist1134648132
  33. Roger Wu, O.D.Optometrist1063400604
  34. Yiping Wu, M.D.Anesthesiology Physician1750471520
  35. Lindsey Wylie-GruenBehavior Technician1811575350
  36. Kelsey Wyman Chin, MS, CF-SLPSpeech-Language Pathologist1972070563
  37. Wynee XiangBehavior Technician1164217667
  38. Qun Xu, M.D.Neurology Physician1174681274
  39. Alyssa YacoubStudent in an Organized Health Care Education/Training Program1336072743
  40. Matthew YaggieBehavior Analyst1609284348
  41. George Yang, M.D.Endocrinology, Diabetes & Metabolism Physician1558304949
  42. Hsin-Yi Yang, AU.D.Audiologist1770818742
  43. Jiayi YangBehavior Technician1811816796
  44. Justin Yang, DDSGeneral Practice Dentistry1972347607
  45. Linda Yang, M.D.Neonatal-Perinatal Medicine Physician1376543389
  46. Paul Yang, M.D.Orthopaedic Surgery Physician1245658772
  47. Shanchao YangPharmacist1255926341
  48. Steven Yang, FNPPsychiatric/Mental Health Nurse Practitioner1487204921
  49. Rafik Yanni, D.D.S.General Practice Dentistry1518047463
  50. Bassam Yassine, M.D.Family Medicine Physician1497854483

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

West Covina, California appears in the CMS National Plan and Provider Enumeration System with 2,450 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 West Covina - 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 West Covina 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 West Covina is weighted toward Behavior Technician (820 clinicians, followed by Marriage & Family Therapist with 112 and Clinical Social Worker with 72). 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, West Covina reports roughly 6.3 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.

For West Covina 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 West Covina, CA?

There are 2,450 registered healthcare providers in West Covina, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in West Covina?

The most common specialties in West Covina are Behavior Technician, Marriage & Family Therapist, Clinical Social Worker, Family Medicine Physician, Pharmacist. Behavior Technician has the most providers with 820.

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.