Dr. Gregory J. Brannon is an American surgeon, public figure, and founder of the leading bio-identical hormone replacement practice (BHRT) Optimal Bio, based in Cary, NC, with locations across the East Coast.

After practicing OB/GYN for nearly thirty years, Dr. Greg Brannon's OB/GYN experience sparked his interest in hormones and how they work within the body and ultimately led him to open Optimal Bio, a BHRT practice dedicated to bringing people's bodies back to the optimal levels they were initially designed to maintain.