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

MICHAEL H FEDDERSEN, DO

PSYCHIATRY

Graduated: 2003

NPI: 1871710160

Practice Locations (2)

ALAMEDA HEALTH SYSTEM

2060 FAIRMONT DR

CASTRO VALLEY, CA 945781001

5103467500

ST. HELENA HOSPITAL

10 WOODLAND RD

SAINT HELENA, CA 945749554

7079633611

Source: CMS National Downloadable File, September 2026.

MICHAEL FEDDERSEN, DO | HealthCareAtlasUSA