Veterinarians

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Jenny Siess, DVM

Dr. Siess was born and raised in Southern California and moved to Flagstaff to attend NAU. She fell in love with the mountains, so she made Flagstaff her permanent home. Dr. Siess started working at Westside in 2008 as a veterinary technician where she quickly made the clients and patients her family. After finishing veterinary school at Western University of Health Sciences in Pomona, CA, it was only natural for Dr. Siess to come  “home” to Westside Veterinary Clinic to work as a veterinarian. Wanting to make a long-term commitment to Westside, Dr. Siess became the owner of the practice in March 2018. She loves surgery, orthopedics, preventative medicine and exotic animal medicine. When she can, she works with the Humane Society of the US to provide free veterinary care animals in extremely rural areas of the country. In her limited free time, Dr. Siess enjoys hiking, camping, traveling, and of course spending time with her husband, John, and their 3 dogs, 5 cats and ball python. Dr. Siess could not ask for a better practice to be a part of, nor could she ask for a better staff! 


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Toni Barnes, DVM

Dr. Barnes earned her Doctorate in Veterinary Medicine at Colorado State University. She was the owner of Westside Veterinary Clinic for 12 years until March of 2018 when she sold the practice to Dr. Jenny Siess. Dr. Barnes has a passion for internal medicine in small animals. She is also certified in Veterinary Acupuncture and has years of experience in alternative  and Chinese veterinary medicine. In her free time, Dr. Barnes enjoys doing agility and hiking with her 2 Jack Russell Terriors, Petey and Reggie. She loves gardening and relaxing around the house as well as traveling both in an out of the United States.  

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Chelsey Rae Calhoun, DVM

Raised in Cottonwood, Chelsey grew up riding horses and befriending the many animals she had at home, from dogs, goats and chickens to a feral younger brother.  The passion for animals started early and she became a veterinary technician in high school. She then attended college at Northern Arizona University, going on to earn her veterinary degree at Colorado State University.  However, her heart has always been in Arizona, and she  returned, first to Sedona's red rocks for several years, then moved up to Flagstaff where she joined the amazing Westside team in 2017.  Dr. Calhoun is a Certified Veterinary Acupuncturist and she has a passion not only for acupuncture, but also internal medicine, soft tissue surgery, and pain management. She also enjoys treating and continuing to learn about exotic animals.  She loves living in Flagstaff with her husband Luke, twin baby girls Avery and Ella, and her small zoo at home, including two dogs (Scout and Howie), two cats (Oliver and Sir Furguson), two parakeets (Ravenclaw and Hedwig), two rabbits (Furbert and Hamlet) and eight chickens (too many to name!).

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Amanda gordon, DVM

   Amanda was born and raised in the High Desert in Southern California. She knew she wanted to be a veterinarian at 4 years old. She started her journey by volunteering at local animal shelters and rescues, and eventually worked her way up to a job in a small animal clinic in her hometown. She attended college at Cal Poly San Luis Obispo where she earned a B.S. in Animal Science. Amanda's dream of becoming a veterinarian was realized when she was accepted into the veterinary medicine program at U.C. Davis. While there, she became president of the Shelter Medicine Club, and worked to improve the lives of shelter animals in her local community. During her last year of vet school, Amanda and her husband were involved in a serious car accident. Their injuries were extensive, and Amanda had to have multiple surgeries and endured months of physical therapy before she could return to school. Following her recovery, she came to Westside for a 2 week externship, and immediately fell in love with the Flagstaff area as well as the amazing Westside team. She graduated from U.C. Davis with honors in 2019, and moved to Parks soon after. She still has a special interest in shelter medicine as well as surgery. Amanda and her husband share their home with 3 Boxer dogs (Clefty, Reggie and Ruca) and 1 cat (Boots) that Amanda adopted while in vet school. In her free time she enjoys fishing, camping, off-roading, hiking and exploring this beautiful area as much as possible.