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

MARK A MASON, MD

EMERGENCY MEDICINE

Medical school: UNIVERSITY OF MICHIGAN MEDICAL SCHOOL

Graduated: 1985

Also: FAMILY PRACTICE

NPI: 1134167091

Practice Locations (3)

SOUTHEASTERN EMERGENCY PHYSICIANS OF MEMPHIS LLC

2305 GEORGIA ST

LOUISIANA, MO 633532559

5737545531

POTOSI EMERGENCY GROUP, LLC

300 HEALTH WAY DR

POTOSI, MO 636641420

5734385451

SSM HEALTH CARE GROUP

1201 S GRAND BLVD

SAINT LOUIS, MO 631041016

3146172000

Source: CMS National Downloadable File, September 2026.