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

MARK J TAMSEN, MD

EMERGENCY MEDICINE

Medical school: UNIVERSITY OF ARIZONA COLLEGE OF MEDICINE

Graduated: 1979

Also: INTERNAL MEDICINE

NPI: 1346241452

Practice Locations (1)

EMERGENCY CARE DYNAMICS INC

3434 MIDWAY DR, SUITE 1002

SAN DIEGO, CA 921104924

6192256200

Source: CMS National Downloadable File, September 2026.

MARK TAMSEN, MD | HealthCareAtlasUSA