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Hours of Operation

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


Team 1

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 of 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 29 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 family Bruno, 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. Karen Macmillan-Wuebbolt

Associate Veterinarian

My best friend, Frisky, defended me against a rabid fox. At the tender age of five, something changed inside of me when I saw the OSPCA take my cat away with a rabies pole. A veterinarian was born. I graduated from the University of Guelph with an honours degree in Biomedical Science. In 2002, I graduated with my Doctor of Veterinary Medicine degree from the Ontario Veterinary College. ‘Neurologic complications following treatment of canine hypoadrenocorticism,’ was my first published journal article as a Veterinarian. I learned how to be a practitioner at clinics across Toronto. I made sure all my patients were vaccinated for rabies. My husband and I settled in the Beaches in 2010. During the renovation of our house, we were blessed with the birth of our son. Our family is complete with our fur babies including Vader our tuxedo cat, and Rousey the Bengal. I am excited to start a new adventure, meeting all of the adorable cats and dogs at Greenwood Park Animal Hospital. 

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!


Veterinary Technician

Chris has been a veterinary technician at Greenwood Park Animal Hospital for more than 12 years.  She has a passion for working with all animals, especially the small exotic mammals.  Chris is particularly skilled at developing strong client relationships and training clients in medical care of their furry friends.  She lives with Billie, her golden retriever. In her spare time, you will find Chris walking with Billie on the beach.


Animal Care Attendant & Receptionist

Denise joined the Greenwood Park Animal Hospital in 2016.  She has a special interest in small exotic mammals and a budding interest in birds and reptiles. She enjoys assisting in surgery and anesthesia. Denise lives with her partner, her cat Dumbo, and two guinea pigs, Molly and Luke. 


Animal Care Attendant

Tara joined out team in 2019, diligently and professionally working full-time as an our newest ACA.



Kenna joined the team at Greenwood in 2013.  She came to us with extensive experience in client service, having worked in the veterinary industry for over 16 years.  When not at the clinic, Kenna enjoys spending time baking, gardening and quilting.  Kenna and her daughter share their home with a golden retriever named Flynn, OB, a Persian, and Charlie, an exotic shorthair.



Karley also joined our GPAH team in 2019.  When she's not at the hospital she's surely enjoying fun-time with her two super-cool Frenchies.

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