Brendan began practicing physical therapy in 1997 after earning his degree from Utica College of Syracuse University. Shortly after graduation, he became a Certified Strength and Conditioning Specialist (CSCS) through the National Strength and Conditioning Association (NSCA) and opened Empire Health & Wellness Center in 2000. In 2016, he was designated the Medical Honoree for the Walk to Cure Arthritis by the upstate New York Arthritis Foundation, and in 2017 he became credentialed as a Multiple Sclerosis Certified Specialist (MSCS). In 2018, Dr. Sullivan became an ABPTS Board Certified Orthopedic Clinical Specialist (OCS) and is manual therapy certified (MTC) through Evidence in Motion (EIM). He is an Albany native who enjoys exercise, snowboarding and boxing fitness in his free time.