Dr. Gary Agena M.D. is a male health care provider in Madisonville with Obstetrics & Gynecology listed as his primary medical specialization. His credentials are: M.D. (Doctor of Medicine).He graduated from Louisiana State University School Of Medicine In New Orleans in 2002 (around 19 years of experience). His hospital privileges include: St Tammany Parish Hospital, North Oaks Medical Center ....