Following a medical internship and residency in internal medicine at Brooke Army Medical Center (BAMC), he served as the chief resident in medicine at BAMC.
His next assignment was as the staff internist and chief, Internal Medicine Service, U.S. Army Medical Department Activity, Nurnberg, Germany.
He then returned to BAMC where he completed a fellowship in cardiovascular diseases and serve as a staff cardiologist.
In 1991, he completed a fellowship in clinical cardiac electrophysiology at the University of Texas Health Science Center at Houston, Texas.
He then served as chief of Cardiac Electrophysiology and assistant chief of the Cardiology Service, Brooke Army Medical Center.
From 1994 until 1997, he served as chief of Cardiology and Cardiology Fellowship Program director at BAMC.
In 1995, he deployed to Haiti with the 2nd Armored Cavalry Regiment in support of Operation Uphold Democracy.

Subsequent assignments include:
Deputy Commander for Clinical Services, Darnall Army Community Hospital, Fort Hood, Texas
Deputy Commander for Clinical Services, Madigan Army Medical Center
Commander, Bassett Army Community Hospital, Fort Wainwright, Alaska
Acting Assistant Surgeon General for Force Projection, Office of the Surgeon General (OTSG)
Director, Health Policy and Services, OTSG
Commander, Walter Reed Health Care System
Commander, U.S. Army Medical Research and Materiel Command
Commander, Brooke Army Medical Center
Commander, Great Plains Regional Medical Command, San Antonio, Texas
He graduated from the Command and General Staff College and the Army War College.
He is board certified in both Internal Medicine and Cardiovascular Diseases and is a fellow of the American College of Cardiology.
Following a medical internship and residency in internal medicine at Brooke Army Medical Center (BAMC), he served as the chief resident in medicine at BAMC. His next assignment was as the staff internist and chief, Internal Medicine Service, U.S. Army Medical Department Activity, Nurnberg, Germany. He then returned to BAMC where he completed a fellowship in cardiovascular diseases and serve as a staff cardiologist. In 1991, he completed a fellowship in clinical cardiac electrophysiology at the University of Texas Health Science Center at Houston, Texas. He then served as chief of Cardiac Electrophysiology and assistant chief of the Cardiology Service, Brooke Army Medical Center. From 1994 until 1997, he served as chief of Cardiology and Cardiology Fellowship Program director at BAMC. In 1995, he deployed to Haiti with the 2nd Armored Cavalry Regiment in support of Operation Uphold Democracy.
Subsequent assignments include:
Deputy Commander for Clinical Services, Darnall Army Community Hospital, Fort Hood, Texas
Deputy Commander for Clinical Services, Madigan Army Medical Center
Commander, Bassett Army Community Hospital, Fort Wainwright, Alaska
Acting Assistant Surgeon General for Force Projection, Office of the Surgeon General (OTSG)
Director, Health Policy and Services, OTSG
Commander, Walter Reed Health Care System
Commander, U.S. Army Medical Research and Materiel Command
Commander, Brooke Army Medical Center
Commander, Great Plains Regional Medical Command, San Antonio, Texas
He graduated from the Command and General Staff College and the Army War College. He is board certified in both Internal Medicine and Cardiovascular Diseases and is a fellow of the American College of Cardiology.
James K. Gilman