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 / MD

JOHN J LOH, DO

INTERNAL MEDICINE

Medical school: MICHIGAN STATE UNIVERSITY COLLEGE OF HUMAN MEDICINE

Graduated: 1984

Offers telehealth

NPI: 1306852827

Practice Locations (1)

MACE MEDICAL LLC

1124 MACE AVE

BALTIMORE, MD 212213315

4103916996

Source: CMS National Downloadable File, September 2026.

JOHN LOH, DO | HealthCareAtlasUSA