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 15 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
- Albert Dinicola, M.D.Pediatrics Physician1801829528
- Martha DixonPsychiatric/Mental Health Nurse Practitioner1679495055
- Bao Do, MDInterventional Cardiology Physician1477612091
- Thong Do, RPHPharmacist1922886969
- Tracy DoPharmacist1265705230
- Leandra Doan, MDStudent in an Organized Health Care Education/Training Program1306460472
- Thien Doan, MDAnesthesiology Physician1568510444
- Paul Doehring, MDBody Imaging Physician1609947662
- Angeline Domagat, NPFamily Nurse Practitioner1053197004
- Jesse Dominguez, D.O.Family Medicine Physician1467534313
- Matthew Dominguez, DCChiropractor1902776172
- Helen Donovan, PAPhysician Assistant1912022419
- Linda Dow, MDFamily Medicine Physician1992872865
- Curtis DowdsPeer Specialist1770059347
- Cassandra Drew Proebstle, MD MAFamily Medicine Physician1366146821
- Beatrice DuenasDoula1366231540
- Jonathan Duerksen, MDOphthalmology Physician1710054523
- Nicole Duh, MDStudent in an Organized Health Care Education/Training Program1104272525
- Sheila Duncan, NPNurse Practitioner1477620243
- Wendy Duncan, ODOptometrist1538152145
- Avery DunnBehavior Technician1417818014
- Kristine Duong, PHARM.D.Pharmacist1497066617
- Lauren Duplechan, CPSSPeer Specialist1245005347
- Maegen Dupper, MDFamily Medicine Physician1093009466
- Graciela Duran, R.D.H.Dental Hygienist1194951509
- Luis DuranBehavior Technician1063166239
- Naomi DuvernayMental Health Counselor1790628469
- Carly Dyer, RNHome Health Registered Nurse1881465243
- Leodegard Dyoco, R.P.T.Physical Therapist1508017708
- Vanessa Dyoco, COTAOccupational Therapy Assistant1518357417
- Carmen Early, SUDRC 15389Addiction (Substance Use Disorder) Counselor1790502680
- Renee Echandi, PAPhysician Assistant1811056526
- Karen Edison-Holland, MDFamily Medicine Physician1699834226
- Shannon EdwardsRehabilitation Practitioner1568872026
- Mark Eicher, MDInternal Medicine Physician1760541361
- Clifford Eke, MDSurgery Physician1366501959
- Sikavi EklouFamily Nurse Practitioner1467037846
- John Elder, MFTMarriage & Family Therapist1831393974
- Tamara ElhajSpeech-Language Pathologist1215477617
- Celia Elias, NPNurse Practitioner1235206095
- Alysiana Elizalde TahaSocial Worker1457289662
- Matthew Enos, O.D.Optometrist1134560477
- David Enriquez, PMHNPPsychiatric/Mental Health Nurse Practitioner1134058779
- Jonathan Enriquez, DCChiropractor1982491726
- Chioma Enweasor, M.DPediatrics Physician1184078099
- Thawat Eosakul, M.D.Family Medicine Physician1811904519
- Nahan Erfan, O.D.Optometrist1861621435
- Mark Erskine, P.T.Physical Therapist1760605513
- Megan ErvinStudent in an Organized Health Care Education/Training Program1174465447
- Eric EscalanteMarriage & Family Therapist1780429795
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.