Staff

Randall Spare, DVM

Randall Spare is President of AVC. Randall is a graduate of K-State’s School of Veterinary Medicine. He focuses on bovine care, especially cow-calf production. He enjoys being a part of live cattle exportation and providing consultation for a large integrated beef cattle operation in southwest Russia. Through dedication and teamwork, AVC has become the largest veterinary practice in southwest Kansas. Randall and his wife, Michelle, are parents to five children: Anna, Bethany, Mark, Abigail and John.

John Kellenberger, DVM

John Kellenberger has been with AVC since 1996 and a business partner since 2003. He received both his B.S. in Animal Science & Industry and DVM degrees from Kansas State University. He tends to both large and small animals, but the majority of his time is spent with large animals. John's family includes his wife, Angie, daughter Calley, and sons Call and Cord. Family pets include nine dogs, five cats and five horses. John enjoys hunting, fishing, golf, and most of all, spending time with his wife and kids.

Kelly Deewall, DVM

Kelly Deewall has been offering her services at AVC since 2002. Kelly is a graduate of Oklahoma State University where she earned both her B.S. in Animal Science and DVM degrees. She tends to both large and small animal patients. Dr. Deewall designs diagnostic and treatment plans for small animals, performs elective and emergency surgeries, and fields clients' questions. Kelly focuses on small animal orthopedic cases, pain management and rehabilitation. Kelly and her husband, Nathan, are parents to one daughter, Neva. They're owners of two Great Danes, two cats and two chickens. In her spare time, she enjoys spending time with family, dog rescue, art, reading and helping family with their Herefords.

Mark Spare, DVM

Mark Spare returned to his Clark County roots in August 2022 to join the AVC team after earning his PhD and DVM degrees at K-State’s School of Veterinary Medicine in 2019. Prior to entering vet school, Mark took advantage of several opportunities to gain hands-on experience, including a stint in Russia during the development of the largest beef operation in Russia. His collective body of experience in America and abroad renewed the value of his upbringing, and solidified his decision to make a career out of serving others in agriculture through the practice of veterinary medicine.

As an AVC veterinarian, Mark provides care to both small and large animals. He focuses on herd health, diagnosis and nutritional consultation. Mark also assists with AVC’s semen sales and extensive breeding services, including synchronization, artificial insemination, ultrasound pregnancy determination and palpation with the goal of increasing producer profitability. Mark and his wife, Kayla, are parents to three daughters: Elizabeth, Lydia and Moriah.

Josh Dowdy, DVM

Josh Dowdy graduated Oklahoma State University’s School of Veterinary Medicine in May of 2023 and joined the AVC team one short month later. He provides care for large and small animals at AVC. His previous body of experience includes cattle health as well as extensive training in equine reproduction and sports medicine.

Josh enjoys OSU football plus hunting, fishing and riding horses. He and his wife, Claci, own a dog named Bear.

Nick Brown, Vet Technician

As a vet technician, Nick Brown assists the veterinarians on a daily basis. He also treats animals that require an overnight stay and handles the general maintenance of the AVC facilities. Nick joined the AVC team in February 2020 and has extensive experience handling and caring for feedlot cattle. He's an Ashland High School alum and enjoys spending time with his kids, Pate and Jace.

Debby Fox, Office Manager

Debby Fox has been employed with AVC since 1997 and attended Fort Hays State University. She and her husband, Bill, enjoy spending time with their family—son Ben, daughter Lezah, and son Giles and his wife, Jordyn. They have a great time following the Ashland Bluejays and supporting the Fort Hays State University Tigers.

Rhiannon Hazen, Accountant

Rhiannon Hazen handles the accounting responsibilities at the center. She's been assisting AVC clients since 2011. Rhiannon earned a Bachelors of Accounting from the University of Oklahoma. She and her husband Bryce's pride and joy are their daughters, Camdyn and Kendry, and son, McCrae. Bryce and Rhiannon especially love following their kids' activities and enjoy coaching their T-ball and machine pitch teams. They are also avid supporters and enjoy attending the University of Oklahoma football games. The Hazens have three dogs, a horse, and six cats.

Emma Klein, Vet Technician

Emma Klein cares for hospitalized and boarding patients. She is also a BVD technician and assists the veterinarians with daily duties, including appointments and surgeries. Emma graduated from Colby Community College and then earned her B.S. in Animal Science & Industry at Kansas State University. She’s the owner of Josie, a border collie, and enjoys reading, being outdoors and spending time with family and friends.

Sammy Kreutzer, Vet Technician

A graduate of Oklahoma State University, Sammy Kreutzer joined the AVC team in November 2021. She has valuable animal care experience and assists the veterinarians with daily duties. Sammy was raised on a family farm and now raises and trains horses. She also owns five dogs.

Kristen Sawyers, Receptionist

Kristen greets customers when they enter the center as well as manages the phones and scheduling. She joined AVC in July 2023 and has completed her associate degree. Kristen, husband Phillip, and their two kids, JoEllyn and Loretta, care for their three dogs—Daisy, Drover and Edna—and JoEllyn's show pigs. Kristen follows baseball and KU basketball and enjoys hunting, fishing and spending time with family and friends.

Brett Westrup, AI Technician

Brett Westrup joined the AVC team in September 2015 and is an artificial insemination technician. He cares for large animal patients and assists the veterinarians with large animal projects. He is a graduate of Sterling College and has experience in large animal care. His hobbies include hunting, golfing, coaching junior high football, working on the ranch with his dad, and spending time with his kids riding horses, riding bikes and going for walks. Brett follows KU basketball, the Kansas City Chiefs and is a huge Kansas City Royals fan. He also finds time to officiate high school football games. He and his wife, Jaymi, are parents to four girls, Bretlynn, Brystol, Bryton and Bracey.