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. Peiman Hojjati

Dr. Peiman Hojjati was born and raised in northern Iran, near the Caspian Sea. His childhood was filled with memories of his uncle, the rural veterinarian, who he adored to shadow. As a child, he always loved to see his uncle giving hands to the birthing of calves during calving season. After graduating from International Tehran Veterinary College in 1995, he established his career as a companion animal veterinarian in Iran. In 2011, he was accredited and licensed by Ontario Veterinary College; and had opportunities to work for several clinics in the Greater Toronto Area as well as in Winnipeg MB. Dr. Peiman joined our Animal Hospital of Unionville team in March of 2015.

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.

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.

Mehdi Dabirsiaghi
Veterinary Technician

Mehdi was born in Tehran, Iran and graduated from the Doctor of Veterinary Medicine Program at Karaj University in 2005. He is in the process of obtaining his CVO license while working as a veterinary technician at the Animal Hospital of Unionville . He has 10 years experience in the Ostrich and poultry industry being one of only 3 veterinarians in Iran specializing in Ostriches. His hobbies include animals and traveling and he can communicate with our clients in both English and Persian. Look for him as he goes through preliminary history with your furry family members after they arrive for their visit with us.

Karen Leung
Client Services Manager

Karen is our afternoon coordinator. She will welcome you and your pet in both English and Cantonese. Karen is here to assist you with your requests and explain the treatment your pet received as well as the associated billing. She will ensure your next required appointment is booked and give you a reminder call for any scheduled procedures that are required. She is fluent in English and Cantonese.

Angela Lyon

Angela joined our team in August 2017 in the position of co- ordinator. She grew up on a big hobby horse farm in Nova Scotia and then moved to Ontario in 2004 with her 4 horses and other animals. She attended Durham College for the Animal Care program and has since graduated in April 2017 with a certificate and diploma. Angela has extensive experience working in the veterinary field. Angela will welcome you and your pet to our clinic, book your appointments and follow ups and answer your questions regarding the care and nutrition for your pet. She is also the bridge between the reception area and the treatment area where the doctors and staff are caring for your pet. Angela also assists in the comfort and care of all animals whether in the hospital or boarding facility. When not at work, Angela enjoys going to the gym, visiting her 35 year old horse, Wrangler and spending time with her puppy, Rambo.


Tom is a full time student at the University of Toronto and he is very skillful in his spare time helping us at the Animal Hospital. Tom is an assistant to the doctors and veterinary technicians. He also keeps a mindful eye on our boarding animals during the weekends. We hope he will continue his studies and become a great veterinarian.

Professional All Breed Dog and Cat Groomer

Sarita offers grooming for all breeds of both dogs and cats. She is skilled in the full scissoring and finishing of all breed clips.

Sarita has been grooming dogs for over 20 years. She initially graduated from the Canadian School of Dog Grooming, where she apprenticed for one full year, before continuing on her own.

Sarita’s gentle spirit and a lifetime around wild, exotic and domesticated animals, has given her an animal perception that allows her to help calm difficult animals. Her first priorities lie, in making your pet’s grooming experience as comfortable and calming as it can be and then off course, making them look and feel their best.

Thorough and meticulous in her standards for animal care and quality grooming, clients are thrilled to have Sarita and her services

When not grooming at the clinic, Sarita can be found looking after a small menagerie of exotic pet rescues or searching for and rescuing injured wildlife.