eryn Mcgrath,DVM

Medical Director and Veterinarian 

Dr. Eryn McGrath is a graduate of Colorado State University where she earned her Doctorate of Veterinary Medicine in 2015.   She lived in Florida and Australia previously but has been proud to call Colorado home now for over a decade.  Prior to vet school, Dr. McGrath worked as a technician with Dr. Kalenzi for many years, and is very excited to join the team at Rock Creek and work alongside him.

Dr. McGrath has had a strong interest in Emergency Medicine which brought her to pursue an Emergency Internship at Fort Collins Emergency Hospital following graduation.  She has worked in emergency medicine for the last 6 years, and is excited to bring those skills to Rock Creek where she hopes to offer urgent care services in addition to routine care.   She is very passionate about continually expanding upon her education and providing her patients with the best care and quality of life. Dr. McGrath lives with her husband, son, and their fur-babies.  In her free time, she loves to stay active and be outdoors with yoga, hiking, running, and camping.

Gillian Gwartz,DVM

Associate Veterinarian 
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Dr. Gillian Gwartz earned her Doctorate of Veterinary Medicine from the Atlantic Veterinary College on Prince Edward Island, prior to that she attended Colorado State University for her under graduate degree, which is where she fell in love with the state of Colorado.

Dr. Gwartz followed vet school with further training, completing a Rotating Small Animal Internship at Carolina Veterinary Specialist. There she worked with neurologist, internal medicine specialist, surgery specialist, cardiologist, ophthalmologist, exotic specialist, and spent time practicing Emergency medicine. After her internship she decided that she missed Colorado and came back to do general small animal practice.

Dr. Gwartz has a strong passion for nutrition, behavior, neurological conditions, and rehabilitation. She is excited to bring her experience and training to helping pets get the most out of life. In her free time Dr. Gwartz like to take her dogs hiking, go biking, and ride her horse.

Patrick Kalenzi,DVM

Veterinarian and Practice Owner

Born in Uganda to Rwandese refugee Tutsi parents, I began life in a world of segregation, civil war, and abject poverty. Unable to return to the war-torn place of my origin at the time—and plagued by violent discrimination in my adopted country—I fought to find safe haven. As a child, the only constants were my grandfather, our cows and dogs. Because of Grandpa’s wisdom and our bond, I decided to pursue our love of animals as my profession. This is why I became a veterinarian.
Dr. Kalenzi studied Veterinary medicine at Makerere University, Uganda; one of the best universities in Africa.  He moved to America to advance his training with an internship in Kentucky and to give his family a better life.  He took the American Veterinary Association required tests; ECFVG/AVMA (at Mississippi State University) to get licensed in the United States. 

Today, Dr. Kalenzi is the owner of two locations where he regularly practices at,
"Niwot Veterinary Clinic" and it's sister location "Rock Creek Veterinary Hospital"

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Our Manaagers:
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Hospital Administrator 
Hospital Manager 
Our Veterinary Technicians:
Vet Assistant
Vet Assistant 
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Lead Client Representative 
Client Representative 
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Owner and Marketing Director
Client Representative