About Us
Experienced Veterinarians with a passion for horses and helping.
Serving Texas and Oklahoma Families Since 1985
Our mission at Hayes Equine Veterinary Services is to provide quality medicine, veterinary care and service 24/7. Whether in the field or in the clinic, from conception through retirement, our goal is to provide personalized care for your horse.
Started in 1985, by Dr. Katie Hayes as a mobile equine practice out of her house, Hayes Equine Veterinary Services has provided veterinary service 24/7 to the horses and horse owners of Texoma for over 30 years. The original Texas clinic at 6544 FM 1753, Denison, TX is located on Dr. Hayes’ home property, where Dr. Hayes provides 24 hour veterinary care. The clinic focuses on wellness programs, emergencies, sick and hurt horses, intensive care, dentistry, reproductive services, and lameness.
Our staff is dedicated to provide quality service and veterinary care for you and your horse.
Our Promise to You
Meet the staff that will go above and beyond to care for you and your friend.
Dr. Katie Hayes DVM
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Dr. Hayes graduated from Texas A&M and has been practicing equine medicine for 40 years. She worked for Sherwood Animal Clinic in Beaumont, TX and for Dr. Dick Shepherd as a resident vet on his TB breeding farm in Aubrey, TX before starting her own equine practice in Denison in 1985, and Hayes Equine Oklahoma in 2007.
An active member of Equine Veterinary Associations, Dr. Hayes has served on committees and boards of the Texas Veterinary Medical Association, Texas Equine Veterinary Association, and past president of the North Texas Equine Practitioners Association. Dr. Hayes has also served as a board member of the handicap riding association, Hanna’s Horseshoes of Hope, and for Divine Equine Therapeutic Riding Center.
Dr. Hayes believes in giving back to the local horse community. She donates her time, money and services to local horse organizations, shows, rodeos, and horse rescue groups. She also actively participates in equine presentations for the local Extension Services, 4H, and Horse Clubs. Always encouraging and mentoring future horse vets, Dr. Hayes offers high school and college students with pre-vet interest an opportunity to shadow and veterinary students to do externships at her practice. Her interests are Repro, Foals, Dentistry, and Racehorses.
In her spare time, Dr. Hayes rides Dressage, breeds Thoroughbred racehorses, and travels.
Dianne Hildebrand
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Dianne has been working for Hayes Equine for over twenty years. She started out as a veterinary assistant, worked in the office, went back to assisting on the truck, and now serves in the office once again. A passionate animal lover, Dianne has always been surrounded by animals. She currently has 11 cats, one dog, a horse and a donkey, and two goats. She misses her beloved horse, Baby, terribly. When she is not working, Dianne enjoys visiting her three children and five grandchildren, spoiling her cats, and watching movies.
Betty Ann Sullivan
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Betty Ann grew up in southern California riding horses and working at her parents feed store. After moving to Oklahoma and then to Texas, Betty Ann has been with Hayes Equine as a secretary for over ten years. A lover of Appaloosa horses, Betty Ann spends her time breeding and raising them for many events, as well as improving her home and ranch.
Kate Jacobs
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Kate joined the Hayes Equine team in January of 2014. Kate graduated with a bachelors in Animal Science from Texas A&M, Commerce. She has ridden and owned horses most of her life. In her spare time, Kate currently enjoys pleasure riding, running, and working out.
Lauren Giddens
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Lauren joined the Hayes Equine team in March of 2021. She grew up riding horses and has worked under many breeders and trainers during her career. Now she is exploring the new field of veterinary medicine to expand her knowledge. In her spare time, Lauren enjoys breeding and riding her paint horses, along with helping others to develop better partnerships with their own horses.
Our Newsletter
Kick back and have a cup of coffee while you read our latest news and updates!
Visit Us
6544 FM 1753
Denison, TX 75021
Call Us
Phone: (903) 465-0777
Fax: (903) 464-0071