Dr. Youssif is McEwen-Frontenac Animal Hospital’s newest DVM and is enjoying the friendly, knowledgeable, and well-trained team. He has a Bachelor of Veterinary Medicine degree and particularly favours spaying and neutering surgeries. Dr. Youssif is passionate about protecting animals from diseases and helping sick animals get better.

He is currently taking a dental course and an ultrasound program to further improve his expertise. Dr. Youssif had pets back in Egypt, a Golden Retriever dog named Besco and six rabbits. In his free time, he enjoys reading, listening to music, swimming, and volunteering at the St-Georges and St- Joseph church.

Dr. Mariana Guzman Martinez is a dedicated veterinarian focused on helping pets live healthy lives, with a special love for dogs, especially chihuahuas. Her expertise lies in dental care, including extractions and flap surgeries, and she’s expanding her skills in ophthalmology.

Her passion for veterinary medicine began in high school, blending her love for animals and medicine. Originally from Mexico, she has three small dogs—Albee, Fabee, and Pach—and a cat named Marigati. Outside of work, she enjoys roller skating, swimming, and music. Dr. Guzman values a quiet lifestyle and looks forward to giving back through volunteer work.

Erin is our kind-hearted, experienced Practice Manager.  With her Veterinary Technologist Diploma from St. Lawrence College in 2003, and her more than 17 years of experience working with animals, clients, veterinarians and team members, Erin is the go-to leader in her Practice.  Erin seamlessly leads her team by example, meets new clients and pets, provides clinical experience and supports her team.  Outside of the clinic, Erin experiments with cooking, enjoys growing indoor and outdoor plants and enjoys music, movies, reading and her pets, Samson & Gordon.

Gloria graduated from McGill University and St. Lawrence College, Veterinary Technologist Programme.  Commencing her career in Montreal, Gloria was an integral member of the surgical team prior to joining McEwen-Frontenac.  With 30 years of experience, Gloria shares her experience with members of her team and is an integral member of the Dental Programme.  Gloria loves people and animals and you will find her greeting clients and pets with a smile and a warm heart.  Gloria loves to read and enjoys obedience trials with her beloved Boxer and Boston Terriers. 

Kim, born and raised in the Kingston area is a graduate from the St. Lawrence College, Vet Assistant and Technologist Programs.  Kim is passionate about furry friends, having worked in the Kingston Humane Society and now in McEwen-Frontenac.  Growing up, she always had dogs, including caring for her neighbours’ pets while they were away!  When not caring for her patients and clients in McEwen-Frontenac Animal Hospital, she enjoys yoga, walking, and crafting.

Pierre grew up in Kingston, Ontario and has always had a love for animals. Pierre spent a lot of time in the outdoors as a child, enjoying the wildlife. He has owned many pets including dogs, tarantulas, cats and guinea pigs.  Pierre graduated from the Veterinary Technology Programme at the St. Lawrence College In 2017. Pierre is very excited to join part the McEwen-Frontenac  team as a Veterinary Assistant. 

Tara Colling is a Registered Veterinary Technician on a mission to help furry patients at McEwen-Frontenac Animal Hospital feel better. She has a diploma in Veterinary Technology.

Tara loves her team like family through building relationships with clients and their pets. She finds joy in geriatric medicine. She is the proud mother of her cat, Fionn, who she adopted through Napanee Community Kitten Rescue.

When she’s not working, Tara enjoys using her veterinary skills to help animals in need by volunteering at a 100% volunteer and donation run animal hospital in Carriacou, Grenada.

Hailey grew up in a vet clinic in Newfoundland, where her mom worked for over 15 years. Now a Client Care Representative with a Veterinary Assistant certification, she loves meeting pets and finds dental procedures especially rewarding for their life-changing impact.

Her team feels like family—her work mom, grandma, aunt, and sister make every day fun and supportive. Always eager to learn, she has a special interest in prescription diets and was honored with the James Dunlop Memorial Award for Compassion at St. Lawrence College.

At home, she’s got a full house with her Great Dane, Otis, her Beagle, Gunner, and two cats, Haven and Henry (all with middle names, of course). When she’s not at work, you’ll find her outdoors—swimming, fishing, playing sports, or relaxing by the fire with family and friends.