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

GREGG ELLISON, MD

INTERNAL MEDICINE

Medical school: BAYLOR COLLEGE OF MEDICINE

Graduated: 1977

Offers telehealth

NPI: 1073573168

Practice Locations (2)

DAVID B. HAMMER

1051 LAS TABLAS RD

TEMPLETON, CA 934655603

1105 LAS TABLAS RD

TEMPLETON, CA 934659731

8054341851

Source: CMS National Downloadable File, September 2026.

GREGG ELLISON, MD | HealthCareAtlasUSA