If you have an emergency, please call 911.

Introduction

Personal Facts:

Male

Years Since Graduation: 22

Experience/Training

Specialties^*

Internal Medicine (HealthGrades has verified that Dr. Maassen is board certified by the American Board of Internal Medicine)

Information from ABMS® is proprietary data maintained in a copyrighted database compilation owned by the American Board of Medical Specialties® © Copyright 2008 the American Board of Medical Specialties. All rights reserved. This board certification information cannot be used as a primary source equivalent for credentialing or accreditation purposes.

Medical School:

   St Louis University School Of Med St Louis Saint Louis, MO, 1986

Residency:

   St Johns Mercy Med Center

HealthGrades has examined disciplinary actions within the last five years from the Office of Inspector General and 50 state medical boards. HealthGrades could not detect any disciplinary actions for Dr. Gary Maassen as of 04/28/2008
Note: HealthGrades reports on state and federal disciplinary actions (if any) from the previous five years.

Affiliated Hospital

Des Peres Hospital

2345 Dougherty Ferry Road Saint Louis, MO 63122

Des Peres Hospital