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call 416-778-6666

Hours of Operation

M-F 8:00 - 7:00 Sat 8:30 - 2:00


Our Team

Dr. Markus Luckwaldt heads up an enthusiastic and caring team of veterinarians, veterinary technicians, and support staff— all committed to serving the diverse needs of our patients and their pets.​ Our goal is to provide all our clients and their pets with the dignity, respect and the Love they deserve in a superior health care environment.



Dr. Markus Luckwaldt

Veterinarian / Practice Owner

Dr. Markus has had small animal and exotics practice experience for more than 30 years. He has particular interest in canine and feline surgery, and extensive experience in the treatment of birds, reptiles, and small furry exotics. He is a 1991 graduate of the Ontario Veterinary College and is an active member and regular participant in annual continuing education conferences of the OVMA, Association of Exotic Mammal Veterinarians (AEMV), the Association of Avian Veterinarians (AAV), and the Association of Reptilian and Amphibian Veterinarians (ARAV). He is also the consultant vet for the Canadian Peregrine Foundation, and even serves as a consultant for our own Veterinary governing body - the C.V.O.  Any time away from the practice you can find him with his pet family Yoshi-cat and Hugo the Boston Terrier.




Dr. Sabrina DiDonato

Full-time Associate Veterinarian


Sabrina's passion and admiration for animals began at a young age while she grew up surrounded by hamsters, rabbits, reptiles, birds, and a true love for cats. Fueled by her dedication towards advocating for the wellbeing of all types of animals has driven her to naturally pursue a career in veterinary medicine.  After completing her undergraduate degree at the University of Toronto, she worked as the Program Director for Pawsitively Pets where she worked with and continued to educate children about different types of exotic animals. Sabrina completed her Doctor of Veterinary Medicine degree from the University in Melbourne in Australia where she gained valuable experience working with farm animals in the rural setting as well as seeing more exotic animals up close in their unique homes in the wilderness. Completing many different veterinary placements both in Australia and Canada, including previously working with Dr Luckwaldt, has prepared Sabrina for the challenge of helping as many different species of animal as she can, and has strengthened her love for them even more. Sabrina has come full circle now working in and moving back to the East York neighbourhood that she first called home. Sabrina and her husband enjoy spending time cheering on the Raptors with their cat Mia, and dog Toby.


Dr. Camille Hildebrandt 

Full-time Associate Veterinarian

As far back as she can remember, Dr. Camille always felt she had a strong connection with animals of all kinds. She completed her Bachelor of Science degree at the University of Guelph and graduated from the Ontario Veterinary College in 2023. Throughout her time in school, she developed a keen interest in exotic animal medicine that motivated her to work as a summer student at Greenwood Park Animal Hospital. The experience she gained here confirmed her passion for exotics animals and allowed Dr. Camille to begin making connections with pet owners in Leslieville and surrounding communities. Having been a pet owner of many small mammals herself, she understands the need for access to quality veterinary care for exotic animals and is very excited to be starting her career with the team at Greenwood Park Animal Hospital. Dr. Camille has interests in preventative medicine, senior pet care and quality of life, and community outreach. In her spare time, you can find Dr. Camille exploring new hiking trails, reading a book, or convincing her partner to get another pet! 


Dr. Amanda Marsella

Associate Veterinarian

Growing up with horses, dogs, cats, turtles, gerbils, a bird and a rabbit, Dr. Marsella always knew she wanted to be a veterinarian. After completing her undergraduate degree, she attended the University of Toronto, and received a Masters of Science degree from the Faculty of Medicine and went on to graduate from the Ontario Veterinary College in 2013. She completed several mixed animal rotations, as well as a special training program with the Atlantic Veterinary College in PEI in acupuncture and complimentary medicine. Specializing in caregiver support, she prides herself on helping families understand the care their loved ones need. When not helping our patients and their families, Dr Amanda enjoys spending time with her young family and their Labrador, playing hockey at Withrow Park, and cheering on the Maple Leafs!




Tara has been with the GPAH team for 5 years now. She continues to broaden her experience by attending online classes and labs in the veterinary industry. At home, she takes amazing care of her Russian blue cat named Achee.




Nikki joined our team in 2022 and has made quite the impact with her attention to detail, great care, and compassion to all of our client’s pets. She also has her hands full with 8-year-old Mautzi, her fun-loving Sheppard. Along with the loveable Mautzi, she takes care of her family and is an avid fan of the Maple Leafs.



Animal Care Attendant

Maddy started with our clinic early in 2023. She has been a great addition to our team as an animal care attendant and continues to expand her experience, enjoying learning new things every day. At home she takes care of her two cats, Wesley and Tiger.




Customer Service Representative

Karley joined our team in 2019.  When she's not at the hospital she is out paddle boarding, enjoying the sunshine, and spending as much time as she can with her two super-cool Frenchies.



Customer Service Representative

An avid birder, Derek joined GPAH in April of 2023. With a diverse background, Derek has always been described a “jack of all trades”. He’s been a great addition to the team, bringing experience from working in an emergency veterinary hospital. On his days off you would likely find him enjoying nature any which way he can, camping whenever possible.



Customer Service Representative

Emma has a deep passion for all pets small and large. Currently, her house is full, she has four cats: Luna, Nova, Rocky, and Percy; and a Ball-Python snake named Ares. You’ll always be greeted with a bright and warm hello when Emma is behind the front desk.



Customer Service Representative

The newest addition to our team, Sarah brings a wealth of experience working in animal clinics and a warm welcome to any client that walks in our doors. At home she is tolerated every day by her sassy cat named Pepper.

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