HealthCareAtlasUSA

This site republishes official CMS/Medicare Care Compare data. It is not medical advice and does not recommend any specific hospital or treatment — for medical decisions, talk to a doctor.

Doctors / CA

DOUGLAS C VONHERZEN, MD

INTERNAL MEDICINE

Graduated: 2014

NPI: 1194132928

Practice Locations (1)

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP

888 S HILL RD

VENTURA, CA 930038400

8054776400

Source: CMS National Downloadable File, September 2026.

DOUGLAS VONHERZEN, MD | HealthCareAtlasUSA