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

BRIAN NICHOLAS MASON, DO

FAMILY PRACTICE

Graduated: 2020

NPI: 1942889217

Practice Locations (3)

IM-FSR INC

2701 S BRISTOL ST

SANTA ANA, CA 927046201

7147545454

HOSPITALIST GROUP OF MONTEBELLO INC

1701 SANTA ANITA AVE

S EL MONTE, CA 917333411

6265797777

SOUTHEASTERN PHYSICIAN SERVICES PC

6019 WALNUT GROVE RD

MEMPHIS, TN 381202113

9012265000

Source: CMS National Downloadable File, September 2026.

BRIAN MASON, DO | HealthCareAtlasUSA