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

BYUNG DON AHN, MD

CARDIOVASCULAR DISEASE (CARDIOLOGY)

Graduated: 1978

Also: INTERNAL MEDICINE

Offers telehealth

NPI: 1194715193

Practice Locations (4)

PROHEALTH PARTNERS, A MEDICAL GROUP

1042 SAN BERNARDINO RD

UPLAND, CA 917864921

9095241940

UNITED HEART INSTITUTE

685 N 13TH AVE

UPLAND, CA 917864916

PROHEALTH PARTNERS, A MEDICAL GROUP

685 N 13TH AVE

UPLAND, CA 917864963

9099818383

UNITED HEART INSTITUTE

685 N 13TH AVE

UPLAND, CA 917864963

9095008683

Source: CMS National Downloadable File, September 2026.