Meet Our Veterinarians

Dr McKee

Brian McKee, DVM

Dr. Brian McKee was born in Santa Fe, New Mexico and raised on a ranch 30 miles south of town. Throughout his youth on the ranch, he dreamed of becoming a veterinarian. Upon graduating from Kansas State University College of Veterinary Medicine in 1982 he opened up a small ambulatory mixed animal practice outside Santa Fe. A yearning to concentrate on small animal medicine took him to California where he purchased Sierra Veterinary Hospital in South Lake Tahoe. Wanting to move closer to family, Dr. McKee sold his hospital in California in 1992 and purchased Aspen Arbor Animal Hospital in April 1992. Over the past 29 years of practice, he has gained a wealth of knowledge and experience in small animal surgery and medicine. The simple values he learned as a child while growing up on the ranch in New Mexico are the foundation of his practice principles. Dr. McKee and his wife, Charlotte, have two children, two grandchildren and a Border Collie named  Mia.


Dr Brown

Ann Brown, DVM, CVA

Dr. Ann Nelson-Brown graduated as valedictorian from high school and went on to attend Michigan State University. Ann’s undergraduate work focused on Animal Science and she graduated with her Doctorate of Veterinary Medicine from MSU in 1995. She then attened Colorado State University as an anatomic pathology graduate student. She started work as a clinical small animal veterinarian in the Denver area in 1997, and has continued to serve the Denver metro community as a small animal veterinarian ever since. In 1999, Ann recieved special recognition for her humanitarian efforts in starting and maintaining a not-for-profit program aimed at helping abandoned, injured and/or sick animals in need of medical attention. Ann volunteered many hours towards caring for and earning money for diseased abandoned animals. She obtained certification in veterinary acupuncture from CSU’s acclaimed program in the spring of 2009, and has successfully incorporated acupuncture into her veterinary medical and surgical practices. Ann lives in Westminster with her husband, Doug, two children, and their dogs, Buster, Tehya and Pippin. She enjoys reading, creative writing, Kundalini Yoga, hiking and listening to music in her spare time.


dr kreutzerKristy Kreutzer, DVM

Dr. Kristy Kreutzer is a Colorado native and spent most of her childhood growing up in Littleton.  She completed her Bachelor’s of Science in Biology at the University of Colorado in Denver and attended  Colorado State University Veterinary School where she graduated Cum Laude in 2009.  Since graduation, Dr. Kreutzer has practiced  in Northern Colorado and joined Aspen Arbor Animal Hospital in the fall of 2011.  Her professional interests include ophthalmology and internal medicine.  Dr. Kreutzer lives in Arvada with her husband, two children and their adorable Boston Terrier, Oliver, their Goldendoodle, Darla and a sweet pug named Max. In her free time she enjoys scrapbooking, reading, horseback riding and traveling.






Cherilyn Sackal, DVM

Dr. Cherilyn Sackal grew up in Lancaster, PA.  Inspired by the West, Dr. Sackal transplanted herself to Colorado State University to complete her bachelor’s degree in Equine Science.  Feeling truly at home in Colorado, she remained in Fort Collins working as a veterinary technician at the local animal shelter. Dr. Sackal received her DVM from Colorado State University in 2012.  Since graduation she then went on to work as a small animal and exotics veterinarian in the Four Corners Region and Glenwood Springs, CO.   Dr. Sackal’s professional interests are small & exotic animal medicine, surgery, dentistry, and preventative medicine.  She believes in individualized care and working toward complete health.  Dr. Sackal joined Aspen Arbor in the Spring of 2016. Dr. Sackal lives in Boulder with her husband, rabbits, guinea pigs, two cats, veiled Chameleon, parakeets, and zebra finches. In her free time she enjoys the freedom of the back-country trails by self-powered locomotion with trail running and back-country skiing as her primary interests.  She also enjoys yoga and gardening.