Charles Montgomery has served as a staff medical oncologist with the practice since 1979. He has also acted as medical director for North Mississippi Medical Center Hospice, working with the hospital to establish the first Medicare-approved hospice in the state. He has served on the Medical Ethics Committee for North Mississippi Medical Center and as chairman of the committee and also as an associate investigator for the North Mississippi Clinical Community Oncology Program. Montgomery has been chairman of the Department of Medicine at North Mississippi Medical Center and holds licensure in both Mississippi and Alabama.

Memberships:
American College of Physicians
Mississippi Medical Society, Northeast Chapter
Southern Medical Association
American Society of Clinical Oncology
American Society of Internal Medicine
American Medical Association
Southwest Oncology Group
National Surgical Adjuvant Breast Project
North Mississippi Academy of Internal Medicine