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 / MO

GUY W FELDER, MD

INTERNAL MEDICINE

Medical school: SAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE

Graduated: 1988

NPI: 1427159714

Practice Locations (1)

MERCY EAST AMBULATORY SERVICES LLC

5640 C TELEGRAPH RD

SAINT LOUIS, MO 631294243

3142934413

Source: CMS National Downloadable File, September 2026.