Internal Medicine Physician in Los Gatos, CA

Ranked by profile completeness, registry tenure & documented Medicare activity — an honest, data-backed ordering, not a quality, outcomes, or patient-satisfaction verdict.

Compare 68 Internal Medicine Physician providers with a practice address in Los Gatos, California. Every entry is a real NPI record you can open and verify; 87% of the ranked results below have a street-level (rooftop) location.

Providers in city

Street-level located

87%

Registry vintage

June 2026

Ranked Internal Medicine Physician

Top 30 of 68

68 Internal Medicine Physician practice in Los Gatos. Compare the most complete records below, or filter the full list by name and nearby ZIP.

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1
John Cornelius Penner, MD
Internal Medicine Physician · Los Gatos, 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.