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Meet the Doctors


Kathy Seramur

Dr. Kathy Seramur

Dr. Kathy Seramur graduated with her bachelor’s degree in Biological Science in 2010 from the University of Wisconsin-Milwaukee. She then attended the Royal Veterinary College in London, England for 5 years before graduating in 2015.

After moving back to the US, Dr. Seramur worked in a variety of clinics, including both emergency and small animal practices. These experiences have given her a well rounded view and allowed her to learn many different techniques and treatments for all kinds of conditions seen in animals. Her special interests include dentistry, surgery, internal medicine and emergency procedures.

In 2023, Dr. Seramur became the owner of Pet Nation Veterinary Care Center, fulfilling a lifelong dream. While at home, she likes to spend time with her two children, Oliver and Charlotte, and her two cats, Charlie and Chloe.

Dr. Seramur is eager to meet with all her clients as well as their furry loved ones and forge a long lasting, professional relationship.

Carrilyn Rossi

Dr. Carrilyn Rossi

Dr. Carrilyn Rossi hails from Hopkins, MN.

She received her undergraduate degree in Animal Science at the University of Minnesota in 2010. During this time, she adopted a dog named Oliver, whose extensive medical issues inspired her to eventually apply to veterinary school.

Dr. Rossi graduated from the University of Minnesota College of Veterinary Medicine in 2021. Her love of learning ensures that she keeps challenging herself to keep up on all the new medical trends. Her special interests include client education, cytology, dentistry, preventative medicine and surgery.

She currently lives in Columbia Heights with her boyfriend and a myriad of pets, including a Cane Corso, a Shih tzu/pug mix, a Yorkipoo and ten chickens.

Katelyn Mertes

Dr. Katelyn Mertes

Dr. Katelyn Mertes received her bachelor’s degree in Animal Science in 2016 from the University of Minnesota - Crookston. She then graduated from the University of Minnesota College of Veterinary Medicine in 2020.

Upon graduation from veterinary school, she started as a mixed animal practitioner balancing her time with large and small animals. As the demands for the large animal calls decreased and the small animal appointments increased due to the pandemic, Dr. Mertes started doing small animal medicine and surgery full time. Her special interests include surgery, reproduction, and preventative medicine.

Dr. Mertes lives on a beef farm with her husband Mike. In her free time, she enjoys training and competing in events with their five dogs: Aubrey, a Siberian Husky, Aspen, who is a Beagle, and Kimber, Tikka and Caliber, who are all Labrador Retrievers.