Ranked by profile completeness, registry tenure & documented Medicare activity — an honest, data-backed ordering, not a quality, outcomes, or patient-satisfaction verdict.
Compare 116 Internal Medicine Physician providers with a practice address in Fontana, California. Every entry is a real NPI record you can open and verify; 100% of the ranked results below have a street-level (rooftop) location.
116 Internal Medicine Physician practice in Fontana. Compare the most complete records below, or filter the full list by name and nearby ZIP.
Find Internal Medicine Physician near you →Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Internal Medicine Physician · Fontana, CA
Ranking reflects NPPES profile completeness, registry tenure, and documented Medicare activity (where present) — see our methodology. It is not a measure of clinical quality or patient satisfaction. Source: CMS NPPES (June 2026); specialty taxonomy: NUCC. Locations are geocoded from the public practice address.
