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 46 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
- Isaima Rios, RNRegistered Nurse1902340623
- Marina RiosBehavior Technician1447980446
- Christina Rios Avalos, AMFTMarriage & Family Therapist1326563743
- Erika Rios De MejiaLicensed Psychiatric Technician1578350039
- Kimberly Rios-Lam, PSY.D.Clinical Psychologist1215341961
- Karely Rivas, MSProfessional Counselor1477013605
- Melissa Rivera, LVNLicensed Vocational Nurse1962069815
- Wendalee Rivera Pacheco, MDFamily Medicine Physician1083934400
- Haydee Rizo, RCP,RRT,CRTRegistered Respiratory Therapist1457839094
- Adeel Rizvi, PT, DPT, PHDPhysical Therapist1174161079
- Emily RizviRegistered Nurse1083457972
- Leslie Roach, LVNLicensed Vocational Nurse1790523561
- Tenli Roach, D.O.Family Medicine Physician1609002971
- Paul Robb, M.D.Internal Medicine Physician1811296650
- Tiffanee RobertsBehavior Technician1215642129
- Jeffrey RobertsonFoot & Ankle Surgery Podiatrist1235458027
- Victoria RobinsonPhysician Assistant1659728368
- Meryll Kim Robles, DOCTOROccupational Therapist1346166394
- Maria Robles Bell, ODOptometrist1487721247
- Annika RochaBehavior Technician1255262929
- Lawrence RockLicensed Psychiatric Technician1902473986
- Richard Rockstad, PAPhysician Assistant1093831257
- Alexander Rodgers, M.D.Family Medicine Physician1396157103
- America RodriguezBehavior Analyst1215454632
- Arlene RodriguezNurse Practitioner1649013301
- Celina RodriguezAssistant Behavior Analyst1932770450
- Elizabeth RodriguezMental Health Counselor1558151126
- Joanna RodriguezCounselor1811770217
- Jose Rodriguez, M.D.Family Medicine Physician1508829185
- Mariana RodriguezMarriage & Family Therapist1487103990
- Olga Rodriguez, RTPulmonary Diagnostics Certified Respiratory Therapist1255819215
- Rafael RodriguezRegistered Nurse1811422454
- Smith RodriguezBehavior Technician1215798194
- Xochilt Rodriguez, LCSWClinical Social Worker1639361686
- Kathleen Rodriguez MakepeaceSocial Worker1316719099
- Brian Roehmholdt, M.D., PH.D.Dermatopathology (Pathology) Physician1083891782
- Ariel RogersBehavior Technician1194593798
- Brenda Rogers, LCSWSocial Worker1265713267
- Jacob RogersStudent in an Organized Health Care Education/Training Program1215826375
- Sean Roh, MDStudent in an Organized Health Care Education/Training Program1104568922
- Gabriela Rohas VazquezBehavior Technician1699635482
- Christopher RojasPhysical Rehabilitation Occupational Therapist1609570050
- Elvia Rojas, MFTMarriage & Family Therapist1497877096
- Raeann Rojas, OTR/LOccupational Therapist1588354997
- Daniel RojoCommunity Health Worker1184579922
- Abigail RollettBehavior Technician1629939657
- Miriam RomanSpeech-Language Pathologist1386429108
- Ruth Roman, MSN, FNP-CFamily Nurse Practitioner1235726365
- Sara RomaniStudent in an Organized Health Care Education/Training Program1790273894
- Elizabeth Romanio, MFTMarriage & Family Therapist1548387178
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.