Areas of expertise for Dr. Hansen-Flaschen include lung volume reduction surgery (LVRS), second opinions, and intensive care. Dr. Hansen-Flaschen is in-network for Blue Cross/Blue Shield, Coventry, TRICARE, and more. He graduated from New York University (NYU) School of Medicine and then he performed his residency at Hospital of the University of Pennsylvania. He has received the following distinctions: Philadelphia Super Doctors; Recognized annually in Philadelphia magazine's Top Docs issue from 2004 through 2017; and Recognized by America's Top Doctors, 2007, 2008, 2010, 2012-14. Dr. Hansen-Flaschen's professional affiliations include Penn Medicine Institute for Rehabilitation Medicine (Penn Rehab) and Specialty Hospital at Rittenhouse, Hospital of the University of Pennsylvania (HUP), and Penn Presbyterian Medical Center.