Our Caring & Compassionate Veterinary Team!

Meet the Veterinarians & Team of Animal Hospital of Unionville in Markham! We’re pleased to provide exceptional vet care for your pets!

Please call us at (905) 477-2323 to speak to one of our caring veterinary staff members!

Dr. Ernst Marsig
DVM, Director

Dr. Ernst Marsig graduated in 1985 in the top 10% of his class at the University in Munich, Germany, and continued with his post graduate research at two other universities. He was very interested in finding ways to stimulate the immune system to defend the body against cancer and viral diseases. A doctoral thesis and several scientific publications completed his work and brought him the title of Doctor of Veterinary Medicine. After several years in practice (farm animals and pets), he came to Canada in 1989, worked at the Agincourt Animal Hospital in Scarborough and joined the Unionville Veterinary Clinic in 1992 as a partner and converted it into the Animal Hospital of Unionville in 1996. He now is the sole owner of the hospital and has two associates working here with him.

Dr. Marsig is actively interested in Veterinary Dermatology, Dentistry and Applied Animal Behaviour. He is a member of the Canadian Academy of Veterinary Dermatology, the College of Veterinarians of Ontario, the Ontario Veterinary Medical Association, the American Veterinary Dental Society, the American Association of Feline Practitioners, and the American Veterinary Society of Animal Behaviour.

“I don’t think I’ll ever stop learning. Discoveries are constantly being made that can improve the quality of care for your pet. What I learned back at the University research group still applies today: Never be satisfied with the status quo, but continue investigating new ways to improve life and… keep reading!”

Over the years Dr. Marsig realized that veterinary medicine is not only about helping animals live a long and happy life, but that our profession has a huge impact on the families owning the pets. “In a sense, we are really family doctors for the entire family. It is about helping our clients making the best decisions for their pets AND their families. No situation is alike…”. Dr. Marsig is known for his direct form of communication. Please click here to read his open letter to all clients or watch him on YouTube.

Because of his communication, the University of Guelph invited Dr. Marsig for many years to be a guest coach, teaching veterinary students how to communicate with the focus on clients’ needs.

Dr. Marsig is married with five lovely children. The Marsigs value harmony, respect of the environment, and diversity. They live on a farm where they enjoy raising pastured cattle, chickens, a pony, the two Border Collies “Wastl” and “Sepperl”, and of course two cats “Misty” and “Mandy”. Despite being busy with practice, family, and the farm animals, Dr. Marsig values a balanced lifestyle and some of his views are quite amusingly expressed in his blogs.

Dr. Mehdi Dabir

Dr. Dabir graduated from I.A.U. in 2003 with his Doctor of Veterinary Medicine Degree. He joined our team in 2015 as a veterinary technician while he was in the process of obtaining his CVO license. This time gave him valuable experience and he was able to become familiar with our clients and their furry members of their family. Now with his CVO license obtained Dr. Dabir offers extended hours on Wednesday and Thursday evenings so that you may book appointments up to 8pm. Dr. Dabir has extensive experience with companion animals and has 10 years experience in the Ostrich and poultry industry being one of only 3 veterinarians in Iran specializing in Ostriches. His hobbies include outdoor activities, animals and traveling. He is bilingual and can communicate with our clients in both English and Persian.

Nela Hunter
Hospital Manager/Veterinary Technician

Nela joined our team in 2001. She is no stranger to animal care, having owned and worked with both small and large animals for many years, as well as possessing extensive work experience in the veterinary industry. In addition to her duties as a Veterinary Technician, Nela also oversees the day to day operation of the hospital. She loves to interact with clients and their pets and wants to ensure that your experience with us is gratifying. Her passion is breeding and raising race-bred Quarter horses at her farm. She loves her Australian shepherds and many rescued barn cats.



Tyson joined our team in 2019 after spending most of his early-adult life working with animals and educating people about animals of all shapes and sizes. At our hospital he manages all aspects of our client care department and ensures each client receives the proper assistance in a personal, professional and efficient manner. From booking appointments, to assisting with insurance, Tyson is the main point of contact for all clients coming to the hospital. He takes great pride in the service we provide.



Becca attended Seneca college in the veterinary technician program and graduated in 2019. She completed her 2 week placement with us and joined our team as a full time vet tech. Becca became registered with the Ontario Association of Veterinary Technicians in September 2019. Becca is no stranger to animals. She grew up in a farm with cows, chickens and many barn cats. She began volunteering at a veterinary clinic in 2015 and continued her education to become an RVT. Becca enjoys talking to clients and educating them on nutrition and dental health. She monitors your pets under anesthesia and performs dental cleanings. Becca currently has 2 cats, Charlie the Siamese and Oscar the orange tabby. Becca enjoys the outdoors and can often be found reading. 





Registered Veterinary Technician

Mary is the backbone of our hospital in behind the scenes. She pays attention to all details to ensure your loved ones are cared for. Animals are part of her life blood. She worked as a zookeeper in China for 18 years before immigrating to Canada in 2000. Along with her husband and one son she settled in Ottawa. She then attended Algonquin College for the veterinary technician program and graduated in 2008. She is a Registered Veterinary Technician in good standing and has been on staff with us since November 2011. Mary carries out her nursing position with a gentle hand and very compassionate manner. Mary communicates with our clients in both English and Mandarin.