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

JOHN ELLIS, DO

EMERGENCY MEDICINE

Medical school: LAKE ERIE COLLEGE OF OSTEOPATHIC MEDICINE, BRADENTON

Graduated: 2014

NPI: 1003221037

Practice Locations (3)

CEP AMERICA - CALIFORNIA

3901 LONE TREE WAY

ANTIOCH, CA 945096200

9257797200

BERKELEY EMERGENCY MEDICAL GROUP INC

2450 ASHBY AVE

BERKELEY, CA 947052067

5102044444

BENEFIS HOSPITALS INC

1101 26TH ST S

GREAT FALLS, MT 594055161

4064555000

Source: CMS National Downloadable File, September 2026.

JOHN ELLIS, DO | HealthCareAtlasUSA