Doctors and health care providers in Fontana, CA
3,012 individual NPPES records list a practice address in Fontana, 77th of 812 California cities. The largest group is pharmacist: 227, 8% of the city's records, against 3% across California. Page 56 of 61.
The 8 largest groups in Fontana
Source: CMS NPPES primary taxonomy, file of Aug 9, 2026.
Fontana in California
- Rank in California77th of 812 cities by records
- Share of the state0.3% of California's records
- Specialties present25 or more taxonomy codes
- Top three groups20.5% of all records
Compared with California as a whole, Fontana has 7.8× the state's share of certified registered nurse anesthetist records and 0.26× its share of behavior technician records.
Providers in Fontana, alphabetically
- Roxanne Umanzor-Smiley, PAPhysician Assistant1508914599
- Adamma UnakaPsychologist1215408828
- Kimberly UnderwoodCommunity Health Worker1437022399
- Ly Mey Ung, R.D.Registered Dietitian1215224324
- John Uniat, MDInternal Medicine Physician1396816211
- Karl Urban, MDObstetrics & Gynecology Physician1306913272
- Fouzia Usman, M.D.Hospitalist Physician1265966873
- Kenneth UwaomaPsychiatric/Mental Health Nurse Practitioner1821980442
- Payal Vaghashia, DOStudent in an Organized Health Care Education/Training Program1992556625
- Mary ValdezPeer Specialist1407518079
- Clarisse Valencia, M.D.Family Medicine Physician1396126728
- Enrrique ValenciaInterpreter1356153902
- Steven Valenti, MDAddiction Medicine (Internal Medicine) Physician1487713137
- Nisha ValenzuelaLicensed Psychiatric Technician1619799905
- Sandra Valenzuela, NP-CNurse Practitioner1356657993
- Stephanie Valenzuela, MDAnesthesiology Physician1932360971
- Erven Vallero, PAPhysician Assistant1073672796
- Sheila Vanallen, PTPhysical Therapist1003032905
- Leslie Vandover, R.N., FNP-CRegistered Nurse1598127755
- Adrina VargasDoula1821911041
- Laura Vargas, MDFamily Medicine Physician1982915468
- Pedro VargasAdult Companion1932068079
- Reuben VargheseStudent in an Organized Health Care Education/Training Program1629760608
- Susan Varghese, MDPediatrics Physician1528378833
- Miten Vasa, M.D.Rheumatology Physician1972769792
- Jonathan Vasquez, MSMarriage & Family Therapist1699016006
- Julie VasquezLicensed Vocational Nurse1831064195
- Marco VasquezRegistered Dietitian1902169451
- Prasit Vassantachart, MDInternal Medicine Physician1932268596
- Demetra VaughanSocial Worker1740720762
- Priscilla Vaughn, FNPFamily Nurse Practitioner1679373963
- Neal Vavra, DDSGeneral Practice Dentistry1992721302
- Aldo VazquezAthletic Trainer1891465209
- Berenice Vazquez, FNPFamily Nurse Practitioner1861854846
- Daisy VazquezBehavior Technician1760148654
- Citlalli Vazquez ReyesSocial Worker1295158152
- Mark VelascoBehavior Technician1235622838
- Ryan Velasco, RRTRegistered Respiratory Therapist1730709197
- Miguel Velasco-Ceja, MSW; ACSWClinical Social Worker1053143271
- Zulema Velazquez, MAMarriage & Family Therapist1013347236
- Ricardo Velez-HernandezFamily Medicine Physician1639099278
- Gilbert VeluzPhysical Therapy Assistant1407724040
- Edward Vera, D.M.D.Dentist1033468368
- Hermina Verde, M.D.Internal Medicine Physician1104885607
- Johanna Verduzco, LVNLicensed Practical Nurse1790434363
- Noel Victor, MDSurgery Physician1437218195
- Rosalind VictorRegistered Nurse1275276685
- Olga Vicuna, MSWSocial Worker1851096952
- Irma VidalesCommunity Health Worker1497549869
- Katie Viehmann-Wical, MPH, MCHES, RCP, RRTHealth Educator1023542552
The largest California cities
- Los Angeles69,537
- San Diego52,937
- San Francisco38,143
- Sacramento33,083
- San Jose20,925
How to read this directory
Fontana, California appears in the CMS National Plan and Provider Enumeration System with 3,012 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 Fontana - 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 Fontana 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 Fontana is weighted toward Pharmacist (227 clinicians, followed by Family Medicine Physician with 198 and Student in an Organized Health Care Education/Training Program with 193). 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, Fontana reports roughly 7.7 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, Mental Health Counselor is the most prominent one with no provider currently listing a Fontana practice address, a coverage gap Fontana patients typically fill by traveling to a larger nearby hub.
For Fontana 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 Fontana, CA?
There are 3,012 registered healthcare providers in Fontana, CA, covering 25 or more specialties. This includes physicians, dentists, therapists, and other licensed providers.
What are the most common medical specialties in Fontana?
The most common specialties in Fontana are Pharmacist, Family Medicine Physician, Student in an Organized Health Care Education/Training Program, Behavior Technician, Internal Medicine Physician. Pharmacist has the most providers with 227.
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.