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

WILLIAM K MAREK

CLINICAL PSYCHOLOGIST

Graduated: 1989

Offers telehealth

NPI: 1851560544

Practice Locations (2)

214 LAVERNE AVE

MILL VALLEY, CA 949414431

9252750290

SUD SPECIALTY GROUP - CA

4633 OLD IRONSIDES DR, SUITE 304

SANTA CLARA, CA 950541846

8662800260

Source: CMS National Downloadable File, September 2026.

WILLIAM MAREK | HealthCareAtlasUSA