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

DIANA M MAK, DO

FAMILY PRACTICE

Medical school: MICHIGAN STATE UNIVERSITY COLLEGE OF OSTEOPATHIC MEDICINE

Graduated: 1981

NPI: 1104936988

Practice Locations (2)

9089 BASELINE RD

RANCHO CUCAMONGA, CA 917301295

INLAND PHYSICIANS SERVICE INC

9089 BASELINE RD

RANCHO CUCAMONGA, CA 917301295

9099419927

Source: CMS National Downloadable File, September 2026.

DIANA MAK, DO | HealthCareAtlasUSA