The Team


Dr. Heather White
Veterinarian, Hospital Director
Dr. Heather White graduated from the Ontario Veterinary College and has practiced for over 30 years. Dr. White continues to enjoy the practice of veterinary medicine, especially the relationships built with many long term clients.
Dr. John Valsamis
Veterinarian, Hospital Director
Dr. John Valsamis received his B.Sc. and D.V.M. from the University of Guelph. Since graduating from the Ontario Veterinary College over 30 years ago, Dr. Valsamis has practiced the medicine and surgery of dogs, cats, birds and exotics. His main focus has been in exotic animal medicine and surgery.
Dr. Alison Young
Veterinarian, H.B.Sc.
Dr. Alison Young completed her Honours Bachelor of Science degree in Biological Science at the University of Guelph, followed by her Doctor of Veterinary Medicine degree at the Ontario Veterinary College. She has worked and volunteered at a variety of clinics, farms and sanctuaries, with dogs, cats, companion avian and exotic species, horses, miniature donkeys and alpacas in Canada and abroad. She has a special interest in rabbit medicine and surgery, and has completed numerous continuing education courses in companion animal exotic pets. Currently, she has 1 cat, Nala, as well as a fresh water fish aquarium.
Dr. Urszula Korolczuk
Veterinarian, H.B.Sc.
Dr. Urszula Korolczuk has been drawn to animals ever since she can remember. After graduating from the University of Toronto with a degree in Zoology, Dr. Korolczuk obtained her Doctor of Veterinary Medicine degree from the University of Guelph’s Ontario Veterinary College in 2011. She has since worked in the GTA and surrounding area. She shares her life and home with her husband, “Lucy” their lovely standard poodle, “Eve” their ball python, and their falconry birds.
Dr. Alison Wong
Dr. Alison Wong is originally from Hong Kong but has called Ontario her home since 2013. She completed her Bachelor of Science at the University of Guelph majoring in Animal Biology and minoring in Nutrition. She then graduated from the DVM program at the Ontario Veterinary College in 2023. She has a special interest in surgery, preventative medicine and nutrition. She is also Fear Free certified and strives to reduce any fear, anxiety or stress for every pet’s visit. In her spare time, she enjoys playing with her kitten, “Timbit”, swimming, watching movies at the drive-in theatre and exploring nature trails. Dr. Alison is excited to meet you and your furry, scaly or feathery friends!

Veterinary Technicians

Veterinary Technician, H.B.Sc.
Carley graduated from the University of Toronto in 2003 with an Honours Bachelor of Science, with a double major in Biology and Psychology. She has been part of our team since July 2003. She contributes to many aspects of the hospital, as an on the job trained Veterinary Technician, groomer and with administration. She has special interests in exotic pet health, grooming, canine/feline dentistry and client education. On her days off she loves to spend time with her family. Carley also has two cats, “Willy” and “Shya”.
Registered Veterinary Technician, RVT
Katelyn graduated with honors from the Veterinary Technician program at Georgian College in 2014. She took the VTNE and became a Registered Veterinary Technician in 2014. Katelyn has gained valuable experience over the years working at a few practices that treated dogs, cats and exotic animals. She currently has two guinea pigs named Vanna and Chimera as well as a 17 year old leopard gecko named T-bone.
Registered Veterinary Technician
Fiorella was born in Peru and came to Canada to complete her Veterinary Technician course, graduating from Sheridan college in April 2023. Her family bred horses and dogs, so from a young age, Fiorella had a love for all animals. She also attended a Dog Assisted Therapy program in Spain. During her free time, she loves to spend time with her Golden Retriever, Wayra.


Head Receptionist
Kristal started with us in 1999. She started as a veterinary technician and is now our head receptionist. She graduated with a certification in Animal Care and has devoted her career to better the lives of animals. Kristal enjoys her personal time at home with her husband and son who share their home with “Jackson”, a shih-poo.
Gloria joined our team in 1995, after gaining experience in the veterinary field at another clinic. In her personal life she boasts a home with a rescued bearded dragon named “Pikachu” and a labradoodle named “TyBo”. “Luna”, a sweet young cat, is the newest addition to her family. She truly enjoys coming to work daily.
Tara graduated in 2013 with her Veterinary Medical Receptionist Certification from Olds College in Alberta, Canada. Since then she has worked at many different animal hospitals and boarding facilities. Tara joined our team in  November 2020. She has a 4yr old dog named Diesel that she enjoys going on hikes and road trips with.
Emilie joined our team in December 2023. She graduated from the Animal Care program at Sheridan College in 2021. Prior to joining Britannia Animal Hospital, she gained valuable knowledge at other clinics, interning at farms, teaching at a reptile zoo, and volunteering at a cat rescue (with a particular fondness for the senior cats). In her free time, she enjoys watching movies and continuing to volunteer. She currently resides with her fiancé and a household of pets consisting of two mice, two leopard geckos, a Pacman frog named Lilium and a sharpei dog named Uno.

Vetrinary Assistants

Veterinary Assistant
Natalie is currently studying at the University of Guelph for her Bachelor of Science with aspirations of becoming a veterinarian. She has been with us since 2018 and has a sassy Scottish fold named Pookie. In her spare time, she enjoys going for hikes, camping, and traveling.
Veterinary Assistant
Jessica started at Britannia Animal Hospital as a co-op student in April2023. She graduated from the Animal Care program at Sheridan College in April 2023 with the aspiration to become a registered veterinary technician. Jessica loves working with animals and has two dogs of her own, Marley and Winnie
Veterinary Assistant
Madelyn is currently at University of Guelph studying Zoology. She loves all types of animals and hopes to make a difference in the future protecting our wildlife. She has a 10 year old dachshund named Dash who she loves to cuddle and watch movies with!
Veterinary Assistant