Meet the Team

  • Dr.
    Eryn McGrath
    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.

  • Dr.
    Patrick Kalenzi
    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.

    For more on my story, please check out my book! Available on Amazon.   I studied Veterinary medicine at Makerere University, Uganda; one of the best universities in Africa. I moved to America to advance my training with an internship in Kentucky and to give my family a better life.  I took the American Veterinary Association required tests; ECFVG/AVMA (at Mississippi State University) to get licensed in the USA. 

    Now Dr Kalenzi owns two veterinary practices

    'Rock Creek Veterinary Hospital' as well as its sister clinic 'Niwot  Veterinary Clinic' where he regularly practices at both locations. 


We look forward to hearing from you


Find us on the map

Office Hours

Closed on All Major Holidays


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


8:00 am-6:00 pm


9:00 am-4:00 pm