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

ALEXANDER W THRELFALL, MD

PSYCHIATRY

Graduated: 2006

Also: GERIATRIC PSYCHIATRY

Offers telehealth

NPI: 1669538187

Practice Locations (2)

REGENTS UNIV OF CALIFORNIA UCSF

505 PARNASSUS AVE

SAN FRANCISCO, CA 941432204

4154761000

SANTA ROSA COMMUNITY HEALTH CENTERS

751 LOMBARDI CT

SANTA ROSA, CA 954076798

7073033600

Source: CMS National Downloadable File, September 2026.