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 47 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
- Christoper Romero, LMTMassage Therapist1508591330
- Valeria RomeroSchool Counselor1821952896
- Vanessa RomeroAddiction (Substance Use Disorder) Counselor1346638574
- Sally Romero EfigenioBehavior Technician1649099821
- Diana Romo, PA-CPhysician Assistant1174046676
- Aida Romulo, NPNurse Practitioner1164599908
- Shirley Rone, REGISTERED NURSERegistered Nurse1801320833
- Arada Rongkavilit, M.D.Emergency Medicine Physician1750464210
- Audrey RonquilloBehavior Analyst1518405893
- Janeth Shane RoqueNurse Practitioner1710841788
- Julius RoqueFamily Nurse Practitioner1013854694
- Arianna Rosales, PHARMDPharmacist1629671722
- Connie Rose, PHARM DPharmacist1710019351
- Jasmine Rose, PHARM DPharmacist1932539236
- Richard Rose, M.D.Adult Reconstructive Orthopaedic Surgery Physician1053380634
- Samuel Rosener, M.S. CCC-SLPSpeech-Language Pathologist1487982948
- Robert Rosenquist, MDOphthalmology Physician1245307065
- Nathaniel Rosete, PA-CPhysician Assistant1457530768
- David Ross, PHARM.D.Pharmacist1699860445
- Melissa RossPharmacist1659771566
- Ellen Roth, C.R.N.A.Certified Registered Nurse Anesthetist1093885253
- Kathryn Roth, DOFamily Medicine Physician1851468755
- Karen Rothschild-Dunst, CRNACertified Registered Nurse Anesthetist1154529550
- Angela RoweContractor1902346869
- Phyllis Rowlett, CRNACertified Registered Nurse Anesthetist1528285004
- Michael Roy, PAPhysician Assistant1598881740
- Chelsea Royer, MDFamily Medicine Physician1598003923
- Joseph Ruan, M.D.Surgery Physician1043498876
- Ana Rubalcaba, PA-CMedical Physician Assistant1821360702
- Elisabet RubalcavaBehavior Analyst1275036816
- Aaron Rubin, MDFamily Medicine Physician1245301167
- Nadine Rubio, MFTIMarriage & Family Therapist1770949182
- Itzel RuelasBehavior Technician1225784168
- Jeanette RuffocerdaBehavior Analyst1194242768
- Edwin RuizDriver1285300301
- Reinaldo Ruiz, MDObstetrics & Gynecology Physician1700953635
- Concesa Ruiz Ramirez, FNP-CFamily Nurse Practitioner1962288423
- Fiona Russ, RDHAPDental Hygienist1609701572
- John Russell, ODOptometrist1902965619
- Arlene RuvalcabaBehavior Technician1710616107
- Kristine Ryall, APRN MSN FNPCFamily Nurse Practitioner1043411374
- Basma Saadallah, PHARMDPharmacist1356155857
- Carlos SabadoPhysical Therapy Assistant1558751966
- Tameem Sabry, PA-CMedical Physician Assistant1215302989
- Suvan Sachdev, MDInternal Medicine Physician1497822233
- Zahoor Sadiq, DOFamily Medicine Physician1912583402
- Sohail Saeed, MDHematology & Oncology Physician1053469007
- Guillermo Saenz Zavala, MDFamily Medicine Physician1720475478
- Salina Safaei, DDSDentist1033761580
- Fatimah SafariPsychiatric/Mental Health Nurse Practitioner1386425288
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.