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 9 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
- Marco Castellanos, DDSDentist1396083465
- Mario Castellanos, DDSDentist1285927962
- Ernest Castigadorgayomali, FNP-CFamily Nurse Practitioner1467177923
- Ashley Castillo, M.S., CCC-SLPSpeech-Language Pathologist1730073412
- Hannah Castillo, PTPhysical Therapist1487390100
- Ismael Castillo, PHARM.D.Pharmacist1316247778
- Oswaldo CastilloLicensed Vocational Nurse1538005087
- Raynard CastilloPsychiatric/Mental Health Nurse Practitioner1437586047
- Chris Caston, LCSWClinical Social Worker1851793368
- Christine Castro, PHARM.D., BCPSPharmacotherapy Pharmacist1801238332
- Cipriano Castro, PHYSICAL THERAPISTPhysical Therapist1801336086
- Christina Catren, PPSSchool Counselor1376413625
- Sylvia Cayetano, CRNACertified Registered Nurse Anesthetist1558413906
- Annette CedilloCase Manager/Care Coordinator1407749229
- Jassmin Cedillo, M.SBehavior Technician1902780760
- Elizabeth Celaya-Ojeda, MDStudent in an Organized Health Care Education/Training Program1831949213
- Janett Ceron, LCSWClinical Social Worker1922418003
- Luis Cerrato, PTAPhysical Therapy Assistant1174702666
- Kevin Cervantes, MDStudent in an Organized Health Care Education/Training Program1104409895
- Matthew CervantesCase Manager/Care Coordinator1104462407
- Mariana Cervantes Mendez, LCSWClinical Social Worker1255665964
- Andrew Cha, D.OHospitalist Physician1508832940
- Julie Chae, R.PH.Pharmacist1477644102
- Stephanie Chae, MDStudent in an Organized Health Care Education/Training Program1336673995
- Mbebui Chafeh, PTAPhysical Medicine & Rehabilitation Physician1700778941
- Nitiphum ChaiyakamPharmacist1265218739
- Asia ChamberlainCommunity Health Worker1669296018
- Karen Chambers, PAPhysician Assistant1689722571
- Brian Chan, MDStudent in an Organized Health Care Education/Training Program1295675650
- Catherine Chan, PHARM.D.Pharmacist1750445136
- Francis Chan, PHARM.D.Pharmacist1114028339
- Hannah Chan, MDFamily Medicine Physician1093465791
- Joseph Chan, M.D.Hematology & Oncology Physician1497796189
- Pushkar Chand, M.D.Emergency Medicine Physician1013074582
- Kalika Chander, MDPsychiatry Physician1225197882
- Akemi Chang, MDBody Imaging Physician1831266840
- Benjamin ChangPsychiatry Physician1184251365
- Catherine Chang, PHARM DPharmacist1457632226
- David Chang, MDEmergency Medicine Physician1780182196
- Debbie Chang, M.D.Psychiatry Physician1508212499
- Ing ChangPhysical Therapist1073731261
- Julius ChangPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1962769273
- Nolan Chang, MDFamily Medicine Physician1134296130
- Patrick Chang, PHARM DPharmacist1538250238
- Richard Chang, M.D.Pediatrics Physician1831195882
- Sheng-Chieh Chang, MDAnesthesiology Physician1710418298
- Walter Chang, MDSurgery of the Hand (Surgery) Physician1083781835
- Winnie ChangEmergency Medicine Physician1316139405
- Yoon Chang, RPHPharmacist1831560192
- Yu Chang, RPHPharmacist1073027397
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.