NPPES file of Aug 9, 2026

Doctors and health care providers in Union City, CA

1,006 individual NPPES records list a practice address in Union City, 187th of 812 California cities. The largest group is behavior technician: 117, 12% of the city's records, against 18% across California. Page 19 of 21.

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

Union City in California

  • Rank in California187th of 812 cities by records
  • Share of the state0.1% of California's records
  • Specialties present25 or more taxonomy codes
  • Top three groups25.4% of all records

Compared with California as a whole, Union City has 8.4× the state's share of speech-language assistant records and 0.32× its share of marriage & family therapist records.

Providers in Union City, alphabetically

  1. Lesanh Trinh, O.D.Optometrist1689720823
  2. Nhi Trinh, DDSGeneral Practice Dentistry1902788318
  3. Mona Trivedi, M.D.Psychiatry Physician1689781924
  4. Ana Trujillo, M.D.Family Medicine Physician1760427322
  5. Ricardo Trujillo, OTR/LOccupational Therapist1366002719
  6. Duane Trumble, M.F.T.Marriage & Family Therapist1245440247
  7. Kenneth Tuong Truong, D.O..Internal Medicine Physician1376690024
  8. Eunice Tsai, M.D.Dermatology Physician1609070051
  9. Hsin-Jui TsaiSpeech-Language Pathologist1013839901
  10. Kayo TsuchihashiAmbulatory Care Pharmacist1881431880
  11. Sophie Tu, L.ACAcupuncturist1053479055
  12. Jane Tymon, PTCommunity Health Worker1659678308
  13. Ari Udugama, M.D.Dermatology Physician1093893851
  14. Lani UemuraSpecialist1104948686
  15. Dipali UnadkatMental Health Counselor1407097108
  16. Brandi UngBehavior Technician1386409167
  17. Raymund UrbiOptician1093980716
  18. Mila Valmores, LCSWClinical Social Worker1518021542
  19. Yvonne VanBehavior Technician1366125379
  20. Briana VargasBehavior Technician1639852916
  21. Iliana VargasBehavior Technician1548762743
  22. Kris Velasco, LCSWClinical Social Worker1326267824
  23. Vanessa Velasco VazquezBehavior Technician1588445225
  24. Rachel Velen, OTR/LPediatric Occupational Therapist1083119093
  25. Maedeh VeysehRheumatology Physician1891256467
  26. Faith Victoriano, DMDGeneral Practice Dentistry1164755831
  27. Lawrence Vierra, D.O.Orthopaedic Surgery Physician1376584854
  28. Anabel Vilchis MorenoBehavior Technician1841973419
  29. Summer Vilkins, LMFTMental Health Counselor1346851888
  30. Michael VisonPhysical Therapy Assistant1932654787
  31. Jerry Vitellaro, MS, SLPSpeech-Language Pathologist1700424181
  32. Emily VuongPharmacist1598301954
  33. Sarah WallcaveSpeech-Language Pathologist1457649154
  34. Abby Wang, MDFamily Medicine Physician1255893095
  35. Frances Wang, DMDEndodontics1649480252
  36. Hong Qin Wang, MDAcupuncturist1851178313
  37. Meiching Wang, PHARM.D.Pharmacist1063732295
  38. Mark Warner, PSY.D.Psychologist1801951900
  39. Cameron WashingtonBehavior Technician1982487385
  40. Sylvia Watson, PHDPsychologist1609943356
  41. Rachel Watts, RDHAPDental Hygienist1780353144
  42. Hsin-Ju Wei, LACAcupuncturist1952266868
  43. Scott WeigumCommunity Health Worker1679729487
  44. Amy Weldon, MSSpeech-Language Pathologist1811477748
  45. Michael Wetter, PSY.D.Clinical Psychologist1700929791
  46. Carolyn White, M.A. CCC, SLPSpeech-Language Pathologist1851453286
  47. Cynthia White, RNPsychiatric/Mental Health Registered Nurse1023715778
  48. Sarah Wickman Ezell, APRNNurse Practitioner1285365841
  49. Lisa Wicks, NPNurse Practitioner1164440590
  50. Matthew Wilhelm, PSYDClinical Psychologist1518128040

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

Union City, California appears in the CMS National Plan and Provider Enumeration System with 1,006 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 Union City - 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 Union City 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 Union City is weighted toward Behavior Technician (117 clinicians, followed by Pharmacist with 75 and Speech-Language Pathologist with 64). 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, Union City reports roughly 2.6 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, Student in an Organized Health Care Education/Training Program is the most prominent one with no provider currently listing a Union City practice address, a coverage gap Union City patients typically fill by traveling to a larger nearby hub.

For Union City 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 Union City, CA?

There are 1,006 registered healthcare providers in Union City, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.

What are the most common medical specialties in Union City?

The most common specialties in Union City are Behavior Technician, Pharmacist, Speech-Language Pathologist, Physical Therapist, General Practice Dentistry. Behavior Technician has the most providers with 117.

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.