Gary A. Maassen, M.D.

Specialty

Internal Medicine

Certifications

American Board of Internal Medicine

Education

St. Louis University
St. Louis, MO

Residency

St. John's Mercy Medical Center
St. Louis, MO

Hospitals

Des Peres Hospital
Mercy Hospital South
St. Clare Hospital

Professional Notes

Dr. Maassen participated in Operation Desert Storm. He received the Air Force Achievement Medal, the United Nations Outstanding Unit Award, and a Service Medal.

Dr. Maassen has been selected by his peers for inclusion in Best Doctors in America ® from 2015 to 2020.

Dr. Maassen has been awarded Recognition by the National Committee for Quality Assurance (NCQA) and the American Diabetes Association for patient care in Diabetes. NCQA, in partnership with the American Diabetes Association, developed the Diabetes Recognition Program to recognize clinicians who have met standards demonstrating delivery of high quality care to patients with diabetes.

Personal Notes

Dr. Maassen is married to a nurse and they have two children.