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

BRETT J HALLORAN, MD

INTERNAL MEDICINE

Graduated: 2003

Also: HOSPITALIST

NPI: 1235280470

Practice Locations (5)

GALEN INPATIENT PHYSICIANS PC

10 WOODLAND RD

SAINT HELENA, CA 945749554

7079633611

GALEN INPATIENT PHYSICIANS PC

869 N CHERRY ST

TULARE, CA 932742207

5596853462

GALEN INPATIENT PHYSICIANS PC

275 HOSPITAL DR

UKIAH, CA 954824531

7074623111

GALEN INPATIENT PHYSICIANS PC

15248 11TH ST

VICTORVILLE, CA 923953704

7602458691

GALEN INPATIENT PHYSICIANS PC

1 MARCELA DR

WILLITS, CA 954905769

7074596801

Source: CMS National Downloadable File, September 2026.

BRETT HALLORAN, MD | HealthCareAtlasUSA