Veterinarians

PROFFESIONALISM & PASSION FOR HORSES

At PEH our specially trained and dedicated professionals strive to ensure that every patient is treated with state-of-the-art quality care. Our goal is to ensure that we exceed our clients’ expectations and provide excellent care to their horses. We are committed to provide the most advanced medical services both in our hospital facilities and via our ambulatory services. At each of our full service clinics, we offer comprehensive orthopedic, soft tissues, and emergency surgery, as well as reproductive and internal medicine services.

Meet Our Veterinarians

John C. Park, DVM

A native of Estill County, Dr. Park graduated from Auburn University in June of 1997, with a DVM. Later that same year, Dr. Park opened a mixed practice, Estill Veterinary Services, in Irvine, Kentucky. He later moved the practice to Winchester, Kentucky, in June of 2001, first known as Park Animal Care. Dr. Park's interest moved exclusively toward equine in 2004, at which time the practice name changed to Park Equine Hospital. Dr. Park provides all veterinary services with a special interest in surgery. Dr. Park resides in Winchester, Kentucky, with his wife, Tonya, and children, Alec and Blake.

Rhodes Bell, DVM, MS, Dipl. ACVS-LA

Dr. Rhodes Bell is originally from Lexington, Kentucky. His undergraduate education was completed at Vanderbilt University where he received his Bachelor of Arts in Biology and Spanish. He then attended Auburn University for his DVM. Specialty training in Equine Surgery and Lameness was completed at the University of Missouri where he also received a master’s degree in Veterinary Science. In addition, he successfully completed the certification examination to earn the title Diplomate of the American College of Veterinary Surgeons – Large Animal. Before coming to Park Equine Hospital, Dr. Bell had an internship after graduation at Peterson & Smith Equine Hospital in Ocala, Florida; following residency at the University of Missouri he briefly worked in Maryland and Pennsylvania. Dr. Bell's interests are in surgery and lameness. When he’s not busy at the clinic, Dr. Bell enjoys SEC football and basketball, closely following Thoroughbred racing and attending live events, cycling, reading and spending time with his wife, who is also a veterinarian, specializing in Cardiology and his dogs.

Courtney Boysen, DVM

Dr. Courtney Boysen is from Olathe, Kansas. She received a Bachelor of Science in Animal Science, followed by a DVM in 2011 from Kansas State University. Following graduation, she completed a one-year equine medicine and surgery internship at Brazos Valley Equine Hospital in Navasota, Texas. Dr. Boysen returned to Kansas State University, where she completed a three-year equine internal medicine residency. Before joining Park Equine Hospital, Dr. Boysen worked at a mixed animal clinic in Missouri.

Dr. Boysen’s interests are internal medicine and neonatal critical care. Dr. Boysen enjoys watching K-State football, horseback riding, and hiking. Dr. Boysen resides in Lexington with her husband, their dog, and three horses.

Tyler Aschbrenner, DVM

Born and raised in the great state of Kansas, Dr. Aschbrenner received his bachelor’s degree in Animal Science in 2008 from the Kansas State University. Upon graduation, Dr. Aschbrenner accepted an equine ambulatory internship at Peterson & Smith Equine Hospital in Ocala, Florida. In 2009, Dr. Aschbrenner returned home to attend Kansas State University College of Veterinary Medicine. While completing his DVM, Dr. Aschbrenner worked as an emergency surgery and large animal ICU technician, at the Kansas State College of Veterinary Medicine. He also completed an internship under Dr. Shell at Thistledown Racetrack and Northfield Park Standardbred track in Cleveland, Ohio. Dr. Aschbrenner has been with Park Equine Hospital since July of 2013 as one of the clinics first interns and has been a staff veterinarian since July 2014. Dr. Aschbrenner has a special interest in equine sports medicine and equine reproduction. Dr. Aschbrenner resides in Lexington.

Bryan Waldridge, DVM, MS, DABVP (Equine Practice), DACVIM

A native of Bardstown, Kentucky, Dr. Bryan Waldridge joined Park Equine Hospital in December of 2015. He received his DVM from Auburn University. Upon graduation from veterinary school, Dr. Waldridge became a faculty member at Tuskegee University and Auburn University, where he taught large animal internal medicine. He then went on to work for Rood and Riddle Equine Hospital as an internal medicine clinician. Dr. Waldridge was also a resident veterinarian for Kentucky Equine Research, where he was responsible for herd health of research horses and overseeing nutritional research and development of new products. He was also the treating veterinarian at the equine quarantine facility for the 1996 Olympic Games in Atlanta. Most recently, Dr. Waldridge worked for the Kentucky Horse Racing Commission, where he was the treating veterinarian and worked the 2015 Breeders’ Cup at Keeneland Race Course. Dr. Waldridge has a special interest in internal medicine and clinical pathology. He and his wife, Sonja reside in Georgetown, Kentucky.

Drew Hestad, DVM

Born in Ada, Oklahoma, and raised in Georgia, Dr. Drew Hestad grew up showing and training cutting horses. Because of his participation in cutting horse events, Dr. Hestad won several scholarships which put him through college. After graduation from Berry College, he moved to Lexington with his wife Nicole in 2008. While in Lexington, he worked at Hagyard Equine Medical Institute and completed his master's degree in reproductive physiology at the Gluck Equine Research Center.

In 2012, Dr. Hestad was accepted to the Auburn University College of Veterinary Medicine. During his tenure at Auburn, Dr. Hestad further cultivated his interest in reproductive physiology by participating in the student theriogenology club, and in several research projects. One such project was at the Smithsonian Conservation Biology Institute, where Dr. Hestad was introduced to endangered species reproduction.

Now back in Lexington, Dr. Hestad is excited to be working at Park Equine Hospital as an associate. At Park Equine Hospital, Dr. Hestad is available for all ambulatory needs, including reproductive work. Dr. Hestad, wife Nicole, and three children live in Lexington. He enjoys playing with their two dogs, taking on woodworking projects, and cheering on the Kentucky Wildcats!

Walker Logan, DVM

A native of Kentucky, Dr. Walker Logan grew up on Thoroughbred farms in central Kentucky during the school year and on Cape Cod in New England in the summers. She attended the University of Kentucky for her undergraduate studies and obtained her DVM from Tuskegee University in 2004.
After graduation, Dr. Logan worked for Hagyard Equine Medical Institute for 5 years and was then a co-owner of a mixed animal practice based in Bourbon County for several years before joining Park Equine Hospital.
Dr. Logan’s favorite part of her job is helping to heal sick or injured animals and maintain healthy horses, whose owners enjoy and depend upon them.
In her spare time, Dr. Logan enjoys competing in endurance riding, trail riding and playing with her children, and working with several animal rescue/rehoming organizations. She lives on her small farm in Bourbon County with her two children.


Rebecca Christel, DVM

Originally from Long Island, New York, Dr. Rebecca Christel received a Bachelor of Science in Biology from High Point University in North Carolina, and her DVM from Ross University. Her clinical year was at Texas A&M University.

As a child, Dr. Christel tried saving every sick and stray animal she encountered. She knew she wanted to become a veterinarian while she was on a veterinary mission trip to Costa Rica and Nicaragua during her undergraduate years. Learning new skills and being able to use them to aid and better a community was just one of the many experiences that eventually led her to veterinary school.

Prior to graduation, Dr. Christel worked in ICU at a VCA Referral and emergency Animal Hospital in New York. She came to Kentucky for the vast horse population and culture. Dr. Christel said Park Equine Hospital was the right fit for her as the veterinarians and staff come together as a family to help each other out and every patient is taken care of as if it were their own horse. The relationship with the clients is truly special.

Dr. Christel’s favorite part about her job is that no two cases are exactly the same. Not only is there the chance to treat horses, but also to learn from each and every patient along the way.

Dr. Christel enjoys playing volleyball, hiking, and horseback riding when she’s not at the clinic.


Nicholas Rataj, DVM

Originally from Florida, Dr. Nicholas Rataj moved to Kentucky when he was two-years-old, and it’s been home ever since.

Dr. Rataj attended Murray State University, where he received a Bachelor’s of Science in Agriculture as a pre-veterinary major, and also received a chemistry minor.  After undergraduate, Dr. Rataj decided to take a semester at the University of Louisville for completion of one class while waiting on his acceptance into veterinary school.  Dr. Rataj earned his DVM in 2017 from Auburn University College of Veterinary Medicine.

Dr. Rataj’s first veterinary related job started during high school and continued part time through college at Crestwood Animal Hospital. He worked as a kennel technician and eventually became a veterinary assistant.  As his interests grew in large animal medicine, Dr. Rataj took on a student job for nearly three years in the hospital barns at Auburn Universities J.T. Vaughan Large Animal Hospital.  His senior year in veterinary school he was employed as a large animal student resident and worked after hours emergencies.

Dr. Rataj chose Park Equine Hospital because of the reputation of the practice and the great things he had heard from previous employees/interns; he couldn’t pass up the opportunity to jump in. He also says there is no better place to be immersed in a variety of horse experiences like central Kentucky.

His favorite thing about his position at Park Equine is the fact that he gets to see horses get better, and have a significant part in it.  It’s that warm feeling that he’s worked so hard towards.

When he’s not at the clinic, Dr. Rataj enjoys just about everything, especially if it involves being outside.  He likes to make winter trips snowboarding, and beach trips for surfing.  He also enjoys hoping on his horse and leisurely make it through some trails, and playing music.


Tanner Walls, DVM

Originally, from Chillicothe, Ohio, Tanner Walls received her Bachelors of Science in Animal Science and Biology and an Associate of Arts in Western Equestrian Studies from the University of Findlay. She received her DVM from The Ohio State University in 2017.

Dr. Walls knew she wanted to become a veterinarian at an early age. She grew up showing horses and instantly fell in love with them and the industry.

Dr. Walls chose Park Equine Hospital because of the variety of cases and interests of the doctors, as well as the comfortable and welcoming environment of the clinic. Her favorite part of her job is seeing the variety of cases and seeing the improvement in the horse after working up, diagnosing, and treating the problem.

When Dr. Walls isn’t at the clinic, she enjoys reading, riding, hiking, and spending time with her family and dogs.


Brittnee Sayler, DVM

Originally, from Butte, Montana, Dr. Brittnee Sayler grew up on a cattle ranch where she raised sheep, goats, pigs, chickens, cattle, and horses for 4-H. Dr. Sayler’s love of horses was instilled at a young age, as she was riding Quarter horses before she could walk. Her love of animals steered her in the direction of veterinary medicine, and she got her first veterinary technician job during her first semester of undergraduate at Montana State University.

After graduating with a Bachelor of Science in Animal Science from Montana State University, she attended St. George’s University School of Veterinary Medicine on the island of Grenanda, and completed her clinical year at Louisiana State University School of Veterinary Medicine.

While at Louisiana State University Dr. Sayler decided that equine medicine was what she wanted to do. She applied to Park Equine Hospital in February 2017 and was accepted soon after as an intern for the 2017-2018 season.

Her favorite part is being able to see the surgical and non-surgical patients, adults and foals alike that come in needing help and then leaving happy, healthy, and sometimes feistier than ever.

In her free time, Dr. Sayler likes to do anything outdoors, such as running, hiking, and when back home, riding her mare. The experience has been surreal for her and she cannot wait to see what each new day and case will bring.