Robert E. Vandemark, Jr., MD

Robert E. Van Demark, Jr., MD, became the 136th president of the SDSMA on June 2, 2017. He has been a member of the SDSMA since 1983.

Dr. Van Demark is an orthopedic surgeon at Sanford Orthopedics & Sports Medicine in Sioux Falls. He is the head of the Section of Orthopedics and Clinical Professor (Department of Surgery) at the University of South Dakota Sanford School of Medicine.

Dr. Van Demark has been involved in the leadership of organized medicine for several years. Prior to becoming SDSMA president, he held offices within the SDSMA’s Executive Committee and served on the SDSMA Council of Physicians (now re-renamed Policy Council) as a councilor and alternate councilor. He is also past president of the South Dakota State Orthopaedic Society and is a member of the American Society for Surgery of the Hand and the American Association of Hand Surgery. In 2013, Dr. Van Demark was recognized as the Sanford USD Medical Center Service Excellence Doctor of the year.

Dr. Van Demark has volunteered for the SDSMA’s advocacy efforts during the state legislature by participating as a volunteer lobbyist. He serves as chair of the SDSMA’s special Committee on Pain Management and Prescription Drug Abuse, where he has led efforts to address the problem of prescription drug abuse and oversaw the publication of guidelines for physicians to effectively treat pain and minimize patient risk.

Dr. Van Demark received his medical degree from Tufts University School of Medicine in Boston. He completed an internship at McKennan Hospital (now Avera McKennan Hospital & University Health Center) in Sioux Falls, a residency in orthopedic surgery at Mayo Graduate School of Medicine in Rochester, Minnesota, and a fellowship in hand surgery in Los Angeles. 

Dr. Van Demark and his wife, Marilyn, have two daughters: Katie, an anesthesiologist at Avera McKennan, and Sara, a dentist who lives in Rochester, Minnesota. They also have one son, Rob, who is completing an orthopedic trauma fellowship and will be joining Sanford Orthopedics & Sports Medicine in the fall of 2017.  


Board of Directors members