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

JEFF M HAMMAN, MD

INTERNAL MEDICINE

Graduated: 2004

NPI: 1972706315

Practice Locations (1)

PERMANENTE MEDICAL GROUP INC

9201 BIG HORN BLVD

ELK GROVE, CA 957581240

9164785000

Source: CMS National Downloadable File, September 2026.

JEFF HAMMAN, MD | HealthCareAtlasUSA