We are committed to caring for your pet – while maintaining the highest level of safety for our Associates and pet owners. We thank you for your continued patience and support. 
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Ken Rassnick

DVM, DACVIM (Oncology)
Ken Rassnick
Veterinary Specialist
Ken Rassnick

At a Glance

Practicing Since:


Board Certified:


Dr. Rassnick brings experience and expertise to the Specialty Services at VCA Colonial Animal Hospital. Dr. Rassnick received his veterinary degree from Cornell University College of Veterinary Medicine. He completed his Residency in Medical Oncology at the Animal Medical Center in New York City in 1996 and then joined the Oncology Department at Tufts University School of Veterinary Medicine. From 2001-2010 he was an Assistant Professor of Oncology at Cornell, where his research efforts were focused on clinical and translational projects involving cancer control and pharmacological validation of new agents. He is the author of more than 150 articles, book chapters and abstracts in the veterinary literature. Dr. Rassnick is particularly proud of the 8 residents he has helped train to careers in oncology. Through clinical service, he is dedicated to providing cutting-edge, high-quality treatments for dogs and cats with cancer, while still keeping quality-of-life as the top priority.

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The mission of the Oncology Consultation Service is to provide cutting-edge treatments for your pet with cancer, while focusing on quality-of-life. Advances in veterinary cancer treatments are made every day and many types of cancers are very treatable. In fact, dogs and cats with cancer are living months or even years longer than they would have with the same types of cancers just a few years ago. Many cancers in animals, while still very serious, can largely be managed as “chronic conditions” with ongoing surveillance and/or treatment, similar to the way veterinarians treat heart disease, kidney disease, or diabetes.

Who will you see at VCA Colonial Animal Hospital if your pet is referred for an Oncology Consultation?
Dr. Ken Rassnick is a board-certified specialist in Oncology and his Oncology Service offers individualized patient care for all pets with cancer. Dr. Rassnick is supported by a talented team of highly trained licensed veterinary technicians specializing in oncology. The oncology technicians provide an exceptional level of patient care and are equally committed to supporting the social and emotional needs of you and your family.

What to expect if your pet is referred to see Dr. Rassnick:
Dr. Rassnick’s Oncology Service offers pet-owners experience, expertise, and compassionate individualized care for your pet with cancer. The oncology consultation will provide you with information and peace of mind to make the best possible choices for you and your pet.

Initial oncology consultations usually take one hour. During that time your pet’s complete cancer and medical history are reviewed and a comprehensive physical examination is done. You will meet with Dr. Rassnick during the consultation and will discuss his recommendations for further diagnostics and/or treatments. With the exception of diabetic pets, no food should be given after 6 pm the evening before your pet’s initial oncology appointment, as some diagnostic tests are best performed and interpreted when pets are fasted. You should continue to allow free access to water. If you have any questions about feeding or administering your pet’s current medications prior to your consultation with Dr. Rassnick, do not hesitate calling the hospital.

VCA Colonial Animal Hospital

2369 N. Triphammer Road

Ithaca, NY 14850

Main: 607-257-3650

Fax: 607-257-7009

Hospital Hours:

    Mon-Sun: Open 24 hours


8:00 am-9:00 pm, 7 days a week

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