Meet Our Doctors

  • Robert P. Cotthaus , DVM

    Dr. Robert Cotthaus is a graduate of the University of Illinois College of Veterinary Medicine. A Long Island native, Rob came to veterinary medicine as a second career. Following graduation from SUNY Stony Brook, he lived and worked in Boston and Brooklyn, NY for a number of years. Rob has a professional interest in the responsible and compassionate care in the use of laboratory animals in research and consults within the Biotechnology Industry. When not working, he can be found with his wife, four children and his 2 dogs, Benny and Stella, on the beach in the summer and the ski mountain in the winter.

  • Ellyn S. Kirk, VMD

    Dr. Ellyn Kirk is a Connecticut native and graduate of the University of Pennsylvania College of Veterinary Medicine. After obtaining her undergraduate degree from Villanova University, Ellyn lived and worked in the Washington DC area. After she received her veterinary degree, she returned home to Connecticut, with her husband and their 2 children. They have 2 pets, a lab named Toby and their cat, Jax.

  • Griffin B. O'Connor, DVM

    Griffin O'Connor, DVM is a native of Suffield, CT. She graduated from Ross University in 2007 after completing her clinical training at Virginia-Maryland regional college of Veterinary Medicine. She joined Suffield Veterinary Hospital in 2007, where she worked for nearly 10 years. Dr. O'Connor has been with us here at Glastonbury Animal Hospital since February, 2018.  We are glad to have her here with us; she brings with her a lot of knowledge, and laughter! She shares her home with her husband Jason (also a veterinarian), her two small children, a cat Sushi and two Rhodesian Ridgebacks: Bodhi and Sparkle. In her time off she can be found hiking with her dogs or spending time on the water.


  • Marcy L. Nedder, DVM

    Dr. Marcy Nedder was born and raised in Central Connecticut. She received her Bachelor of Science degree in Nursing from the University of Rhode Island in 1985. She worked as a registered nurse in a Boston hospital prior to her veterinary career. Dr. Nedder received her Doctoral of Veterinary Medicine from Tufts University in 1996. She has practiced veterinary medicine in Boston and in various places in Connecticut. At home Dr. Nedder manages her own farm which includes horses, chickens, sheep, and her rescued dogs. Her twin daughters and husband, who is also a veterinarian, keep her busy as well. She previously worked at Powder Ridge Veterinary Hospital for 3 years.  We are very excited for her to join our team!


Business Hours


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-12:00 pm