HealthCareAtlasUSA

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Doctors / LA

MARK A ST CYR, MD

INTERNAL MEDICINE

Medical school: LOUISIANA STATE UNIVERSITY SCHOOL OF MEDICINE IN SHREVEPORT

Graduated: 1986

NPI: 1184678997

Practice Locations (3)

CHRISTUS HEALTH CENTRAL LOUISIANA

1635 MARVEL ST

COUSHATTA, LA 710199022

3189322199

EAST CARROLL PARISH HOSPITAL

336 N HOOD ST

LAKE PROVIDENCE, LA 712542140

3185594023

DERUSSY EMERGENCY GROUP LLC

4231 HWY 1192

MARKSVILLE, LA 713514711

3182406045

Source: CMS National Downloadable File, September 2026.

MARK ST CYR, MD | HealthCareAtlasUSA