His areas of expertise include the following: renal angioplasty, stent placement (stenting), and mesenteric artery angioplasty. He accepts Blue Cross/Blue Shield, Coventry, TRICARE, and more. After completing medical school at Weill Cornell Medical College, Dr. Barker performed his residency at Hospital of the University of Pennsylvania. Awards and/or distinctions he has received include Recognized by Best Doctors in America 2003-2004 and Recognized in Philadelphia Magazine 's, 2005, 2006 Top Docs issue. Dr. Barker is professionally affiliated with Hospital of the University of Pennsylvania (HUP).