Cornell University Hospital for Animals


About Us

Hospital Administration

Hospital Director

Margaret Thompson

Margaret Thompson, DVM, DACVR
Meg Thompson joined the Cornell faculty in 2006 after 4 years as faculty at the University of Florida. She received her DVM from Tufts University School of Veterinary Medicine in 1998, completed an internship in small animal medicine and surgery at Angell Memorial Animal Hospital in 1999, a residency in radiology at the University of Florida in 2002 and is board certified by the American College of Veterinary Radiology.


Director of Finance and Administration

Danielle Pfaff

Danielle Pfaff


Medical Directors

Dr. Miller William Miller, DVM

William Miller has been practicing veterinary dermatology since 1977. He received his VMD from the University of Pennsylvania in 1976. He then completed an internship at Cornell University and a residency at the University of Pennsylvania. He is certified by the American College of Veterinary Dermatology.

Gillian Perkins Gillian Perkins, DVM, DACVIM
I am a large animal internal medicine specialist and provide diagnostic evaluation and treatment for medical disorders of horses, dairy cattle, camelids, sheep, and goats. I have a particular interest in infectious diseases and preventing them in the hospital; for that reason, I am head of the Infection Control Committee. I grew up riding horses in hunter and jumper activities, and currently take pleasure in watching my young daughter begin to ride. I enjoy encouraging Cornell veterinary students into equine practice and serve as faculty advisor of the student chapter of the American Association of Equine Practitioners (AAEP). My research interests are mainly in Equine Herpes Virus-1, Strangles, Salmonella, immunology and the microbiota of the horse stomach.
Gretchen Schoeffler

Gretchen Schoeffler, DVM, DACVECC
Gretchen Schoeffler has been practicing veterinary emergency and critical care medicine since 1996, and serves as section chief of the Emergency Medicine and Critical Care Service. She received her DVM from Texas A&M University. Following graduation she completed an internship in small animal medicine and surgery at the University of Georgia and a residency in emergency and critical care at Tufts University. She is certified by the American College of Veterinary Emergency and Critical Care.


Hospital Operations Staff

Wendy English

Wendy English
Client Service Manager

Sarah Bassman

Sarah Bassman
Client Service Coordinator
Sarah Bassman is Cornell’s referring veterinarian and client coordinator, a position dedicated to providing additional care and service to our clients and referring veterinarians.
Tel: 607-253-3641    Email:

Marcella Benda Marcella Benda

Hospital Operations
Tel: 607-253-3030

Rosemary Adessa Rosemary Adessa

Coordinator of Clinical Programs and Professional Services

Pilar Thompson Pilar Thompson

Coordinator of the Visiting Veterinarian and Extern Program

Kevin Lyon Kevin Lyon

Financial Specialist

Amanda Bailey

Amanda Bailey
Accounts Representative