Kristy Petersen MD, Garrett Shelton MD, and Stan Tatum, Chief Executive Officer with St. Mary's Regional Medical Center, (from left) pause for a portrait in the hospital administrative office lobby Wednesday, Jan. 30, 2013. Dr. Petersen and Dr. Shelton will become physicians in the new hospitalist program at St. Mary's Regional Medical Center within the next few months. (Staff Photo by BONNIE VCULEK)

Kristy Petersen MDGarrett Shelton MDStan TatumSt. Mary's Regional Medical Center Chief Executive OfficerHospitalists ProgramBonnie VculekEnidOklahoma