Dr. Lenfest is a Pennsylvania native where her interest in sports medicine developed from involvement with high performance horses as a breeder and competitor. This interest flourished during vet school at the University of Pennsylvania when she worked at the Working Dog Center helping with the research, training, and development of working dogs for search and rescue, law enforcement, and single purpose occupations. Margret completed a rotating internship in south Florida at Coral Springs Animal Hospital followed by a three-year residency at Cornell University in canine sports medicine and rehabilitation. Her residency training included travelling to Alaska to work as a veterinarian for the Yukon Quest sled dog race and serving as part of the veterinary team for the Westminster Dog show. Margret became a board certification diplomate of the American College of Sports Medicine and Rehabilitation in 2024 while working at Guardian Veterinary Specialists in Brewster NY. She joined the faculty at Cornell University as an Assistant Professor in the section of Sports Medicine and Rehabilitation in 2024. Margret’s clinical interests include musculoskeletal ultrasound and regenerative medicine to manage a variety of conditions.