Dr. Gary A. Maassen graduated from the Saint Louis University School of Medicine in 1986. He works in Saint Louis, MO and specializes in Internal Medicine. Dr. Maassen is affiliated with Des Peres Hospital, Saint Anthonys Health Center and SSM Saint Clare Health Center.
Years in Practice: 29 Years
Languages Spoken: English
Medical School: Saint Louis University School of Medicine
Graduation Date: 1986
Specialties: Internal Medicine