Our Veterinarians

Katie Knight, DVM
Dr. Knight graduated from Virginia-Maryland College of Veterinary Medicine in 2016. After graduation she worked in small animal general practice for several years before completing a small animal medicine and surgery internship at BluePearl in Rockville, MD in 2019. Following her internship she worked for several years as an emergency clinician in Newark, DE before joining the veterinarian team at Longwood Veterinary Center in 2021. Dr. Knight has a special interest in diagnostic imaging and critical care. She resides in Wilmington, DE with her husband, their two cats, and their two dogs. In her spare time Katie enjoys baking, traveling, and spending time with her family.

Sarah Bussard, VMD
Dr. Bussard joined our team as a veterinarian in June 2024, but she's no stranger to us! From 2017 to 2022, Sarah worked at Longwood Veterinary Center as a nurse assistant while completing her undergraduate studies at the University of Delaware. She went on to earn her Doctor of Veterinary Medicine degree from the University of Pennsylvania in 2024.Dr. Bussard has a particular interest in small animal internal medicine and behavior, and she is passionate about providing compassionate care for pets and their families.
Outside of work, Sarah enjoys gardening, hiking, and spending time outdoors with her pets. She cherishes moments with her family and friends and shares her home with her husband and several beloved pets, including bunny rabbits, dogs, and a cat.

Dr Sami Kosin, VMD
Dr. Kosin graduated with a Bachelors of Science from the University of Delaware in 2020. In 2024, she graduated from the University of Pennsylvania with her doctorate of veterinary medicine. She worked at a small animal general practice in Delaware before joining the team here at Longwood in 2026. Dr. Kosin enjoys cardiology and internal medicine. She loves all small animals but is especially passionate about feline patients. Outside of work, Dr. Kosin likes to spend her time crocheting, baking, cooking, spending time outdoors, and snuggling with her two cats and leopard gecko.
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Holiday Hours
We will be closed for the holidays through Dec 24-26 and on New Years Day.
We will be closing at 2PM on New Years Eve. We appreciate your understanding!







