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.
The 8 largest groups in Union City
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
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
- Lesanh Trinh, O.D.Optometrist1689720823
- Nhi Trinh, DDSGeneral Practice Dentistry1902788318
- Mona Trivedi, M.D.Psychiatry Physician1689781924
- Ana Trujillo, M.D.Family Medicine Physician1760427322
- Ricardo Trujillo, OTR/LOccupational Therapist1366002719
- Duane Trumble, M.F.T.Marriage & Family Therapist1245440247
- Kenneth Tuong Truong, D.O..Internal Medicine Physician1376690024
- Eunice Tsai, M.D.Dermatology Physician1609070051
- Hsin-Jui TsaiSpeech-Language Pathologist1013839901
- Kayo TsuchihashiAmbulatory Care Pharmacist1881431880
- Sophie Tu, L.ACAcupuncturist1053479055
- Jane Tymon, PTCommunity Health Worker1659678308
- Ari Udugama, M.D.Dermatology Physician1093893851
- Lani UemuraSpecialist1104948686
- Dipali UnadkatMental Health Counselor1407097108
- Brandi UngBehavior Technician1386409167
- Raymund UrbiOptician1093980716
- Mila Valmores, LCSWClinical Social Worker1518021542
- Yvonne VanBehavior Technician1366125379
- Briana VargasBehavior Technician1639852916
- Iliana VargasBehavior Technician1548762743
- Kris Velasco, LCSWClinical Social Worker1326267824
- Vanessa Velasco VazquezBehavior Technician1588445225
- Rachel Velen, OTR/LPediatric Occupational Therapist1083119093
- Maedeh VeysehRheumatology Physician1891256467
- Faith Victoriano, DMDGeneral Practice Dentistry1164755831
- Lawrence Vierra, D.O.Orthopaedic Surgery Physician1376584854
- Anabel Vilchis MorenoBehavior Technician1841973419
- Summer Vilkins, LMFTMental Health Counselor1346851888
- Michael VisonPhysical Therapy Assistant1932654787
- Jerry Vitellaro, MS, SLPSpeech-Language Pathologist1700424181
- Emily VuongPharmacist1598301954
- Sarah WallcaveSpeech-Language Pathologist1457649154
- Abby Wang, MDFamily Medicine Physician1255893095
- Frances Wang, DMDEndodontics1649480252
- Hong Qin Wang, MDAcupuncturist1851178313
- Meiching Wang, PHARM.D.Pharmacist1063732295
- Mark Warner, PSY.D.Psychologist1801951900
- Cameron WashingtonBehavior Technician1982487385
- Sylvia Watson, PHDPsychologist1609943356
- Rachel Watts, RDHAPDental Hygienist1780353144
- Hsin-Ju Wei, LACAcupuncturist1952266868
- Scott WeigumCommunity Health Worker1679729487
- Amy Weldon, MSSpeech-Language Pathologist1811477748
- Michael Wetter, PSY.D.Clinical Psychologist1700929791
- Carolyn White, M.A. CCC, SLPSpeech-Language Pathologist1851453286
- Cynthia White, RNPsychiatric/Mental Health Registered Nurse1023715778
- Sarah Wickman Ezell, APRNNurse Practitioner1285365841
- Lisa Wicks, NPNurse Practitioner1164440590
- Matthew Wilhelm, PSYDClinical Psychologist1518128040
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
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.