Fletcher graduated from Dalhousie Medical School in 1991. Most of his clinical time has been spent in an Emergency Department although he briefly had a family practice in Amherst from 1996-1997. He began practicing sports medicine in 2006 when he founded the Medicine in Motion Sports Medicine and Arthritis Care Centre and completed the Canadian Association of Sports and Exercise Medicine diploma examination that same year.

In his sports medicine practice, he enjoys managing patients with any joint or muscle injury but has a special interest in patients with OA.

Mark enjoys playing golf, family vacations and summer afternoons boating on Porters Lake.