Our Team

We are fortunate to have a team of dedicated, caring people as your pet's healthcare team.  Each and every one has been called to this profession by a deep respect and love for animals. We look forward to getting to know you!


Dan Atlas, DVM

Dr. Dan Atlas grew up in New York and obtained his Bachelor degree in Animal Science in 1998 and his Doctorate of Veterinary Medicine in 2004 from Cornell University. He began his career in a busy small animal practice in southern New Hampshire, but was easily lured to his wife's home state of Colorado (as many of us are) for the beautiful landscape and endless outdoor activities and amenities.

Prior to purchasing Beaver Brook Pet Center from Dr. Manobla in 2012, Dr. Atlas practiced primarily in southwest Denver, including serving four years as the medical director at VCA Dakota Ridge Animal Hospital. Dr. Atlas is a member of the American Veterinary Medical Association, the Colorado Veterinary Medical Association and the Denver Area Veterinary Medical Society (DAVMS). He has a special interest in preventative care and geriatric medicine, but enjoys all aspects of general practice, including soft tissue surgery and dentistry.

Dr. Atlas lives in Evergreen with his wife and two daughters as well as their two cats and two dogs, Calvin and Blue. Dr. Atlas enjoys skiing, running, golfing and playing soccer.

Don Kammerzell, DVM

Dr. Don Kammerzell is a Colorado native, born in Denver and raised in Wheat Ridge, Colorado. He graduated in 1983 from the University of Colorado in Boulder, with a BS in Business, with honors. He then graduated in 1989 from Colorado State University receiving his DVM degree again with honors. For 9 years Dr. Kammerzell worked as a mixed animal practitioner treating cattle, horses and companion animals in both Limon and then Fort Morgan, Colorado. In 1998 he moved to Littleton and has been treating only companion animals since. As of 2003, he has specialized in companion animal relief practice, filling in as a substitute for veterinarians and their practices in the greater Metro Denver area.

He lives in Littleton with his wife, Debbie, and their two dogs Rascal and Anna. Dr. K, as he prefers to be called, enjoys spending time in the great outdoors with his family and cruising with his wife on his motorcycle. He currently works every Thursday and every other Saturday, for Beaver Brook Pet Center, to allow Dr. Atlas some deserved time off.

Hospital Manager

Kevin McHugh, Hospital Manager

Kevin was born and raised in the great state of Wisconsin. He grew up on a 40 acre farm with his six brothers. The farm raised cows, pigs, and chickens. From this upbringing, his love for all animals grew and in 2000 he enrolled at Colorado State University and in 2004 earned his B.S. in Zoology. Kevin is thrilled to be part of the Beaver Brook team and looking forward to meeting current and new clients/pets. Kevin lives with his wife Chelsea, sons “KJ” and Finnegan, daughter Emersyn, and dog Hazel Blue. In his free time, Kevin loves to run, bike, fish, and spend time with his family.

Veterinary Technician Team

315_susan_1.jpegSusan MacKay, Certified Veterinary Technician

Susan was born and raised here in beautiful Colorado. After 15 years in the computer industry and raising her three sons, she decided it was time to pursue her true passion: animals. She went back to school to become a Certified Veterinary Technician.
Since graduating five years ago from The Bel-Rea Institute, she has loved every minute of her new career and feels like she has truly found a home here at Beaver Brook Pet Center.

She currently lives in Littleton with two of her three sons, the eldest recently moving to California. Then of course there are the four-legged kids, Sophie the Jack Russell and Molly the Cock-a-Poo, who are truly spoiled!  In her free time, Susan likes to read by the fireplace, go hiking, camping, and taking long motorcycle rides through the gorgeous Rockies.

Lance Bradbury, Certified Veterinary Technician

Lance is a Denver native and grew up in Littleton.  He started college in Utah, at Brigham Young University, but was a more serious skier than student.  He came back home and worked in the Hotel and Restaurant industry for 6 years before finding his niche in the Veterinary field.  He graduated from the Bel-Rea Institute in 1990 and then Metropolitan State College in 1993 with a B.S. in Zoology.  Lance worked in Littleton as a CVT for 23 years where he met and worked with Dr. Atlas, Kevin, and Susan.  The opportunity came to work in Evergreen at Beaver Brook Pet Center in July of 2013 and he made the move up the hill.  Lance plays competitive Beach Volleyball year round and depending on the season, he loves to hike, bike, snowshoe, and ski.

Sarah Calhoun, Certified Veterinary Technician


Client Care Team

                  Elizabeth Campbell, Client Care SpecialistElizabeth007crop__2_.jpg

Born  and raised in Georgia, Elizabeth felt the draw of the west!  Attending both CSU and University of Utah,  she graduated with advanced degrees in Geology.  She worked in the Oil and Gas industry for many years during which time she and her husband, Bob, moved to Texas and then Canada.  After moving back to Evergreen,  she took time off from work to raise a family (both 2 -legged and 4-legged!).  She is thrilled to be a part of the wonderful team at Beaver Brook.

        Kelly Hempel, Client Care Specialist

Kelly was born and raised in Taos, New Mexico and moved to Colorado in 2015. She graduated from the University of New Mexico with a BS in Psychology and Anthropology. In her free time she likes to spend time outdoors skiing, hiking, camping and going on adventures. She lives in St. Mary’s Glacier with her husband, Cameron, and their two dogs, Trooper and Ruby.

Kennel Technician Team


Stephanie Ferrara, Kennel Technician


                                                  Liana Hernandez, Groomer

Liana was born and raised in Colorado. She's had a passion for caring for animals her whole life, and has been working in the pet industry for 9 years. In her free time she enjoys reading, camping, hiking, four wheeling and antiques.

She currently lives in Arvada with her dog Nora Jean.


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Beaver Brook Pet Center
77 Elmgreen Lane
Evergreen, CO 80439
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  • Phone: 303-670-0838
  • Fax: 303-670-8351
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