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Oklahoma State University

Equine Faculty and Staff

Equine Internal Medicine Faculty

Todd Holbrook, DVM, DACVIM (Large Animal), DACVSMR

todd holbrook

Dr. Holbrook is a professor and holds the June Jacobs Endowed Chair in Veterinary Medicine. He earned his DVM degree at the University of Georgia. Holbrook is a diplomate of the American College of Veterinary Internal Medicine (Large Animal) and of the American College of Veterinary Sports Medicine and Rehabilitation (Equine).

Lyndi Gilliam, DVM, Ph.D., DACVIM

lyndi gilliam

Dr. Gilliam is an associate professor. She was raised in Wyoming and has shown horses her whole life, most recently working cow horses; which is what brought her to Oklahoma. Once she was here, she just couldn't leave so she stayed for her undergrad and DVM degrees at OSU. Gilliam went into a mixed animal private practice in Dalhart, Texas for two years before returning to OSU for her residency and Ph.D. She completed her residency and became board certified in Large Animal Internal Medicine in 2006.

In 2012, she completed her Ph.D. in Veterinary Biomedical Sciences studying the effects of rattlesnake venom on the horse's heart. Her current research includes envenomation and methods to treat it, equine herpes virus, Corynebacterium pseudo tb / Pigeon Fever, and analgesic protocols for chronic pain in the horse.

Equine Surgery Faculty

Daniel Burba, DVM, DACVS

daniel burba

Dr. Burba completed an undergraduate study in Biology at Morehead State University, Morehead, KY. Burba attended the College of Veterinary Medicine at Auburn University and graduated in 1986. He was accepted into an internship program in Large Animal Medicine and Surgery at Oklahoma State University and subsequently completed a residency in Equine Surgery in 1990. Burba joined Louisiana State University-School of Veterinary Medicine as an assistant professor of equine surgery in 1990. After 25 years at LSU SVM, he joined the College of Veterinary Medicine at Oklahoma State University in 2015.

Burba became a Diplomate of the American College of Veterinary Surgeons in 1995. He is a member of Phi Zeta Veterinary Medicine Honor Society, Gamma Sigma Delta Agriculture Honor Society, Veterinary Wound Management Society, American Association of Equine Practitioners and American Association of Veterinary Clinicians. His research and clinical interests include orthopedics and laser cribbing surgeries. Burba is a professor, holds the McCasland Professorship in Biomedical Laser Surgery and is the department head for the CVHS Department of Veterinary Clinical Sciences.

Michael Schoonover, DVM, MS, DACVS, DACVSMR

michael schoonover

Dr. Mike Schoonover received his DVM from Oklahoma State University in 2000. He then completed an internship in equine field services at the Ohio State University and returned to Oklahoma State to complete an equine surgery residency and earn a Master of Science degree in Veterinary Biomedical Sciences in 2004. Following his residency training, Schoonover was employed in a private equine referral practice in central Oklahoma for eight years.

In 2012, Schoonover returned to Oklahoma State and is an associate professor of Equine Surgery. He is a Diplomate of both the American College of Veterinary Surgeons (Large Animal Specialty) and the American College of Veterinary Sports Medicine and Rehabilitation (Equine Specialty). His research interests are in equine regional limb perfusion techniques, objective lameness evaluation modalities and general equine sports medicine and surgery.

Schoonover is married to Dr. Jennifer (Moore) Schoonover. Together they own a small animal veterinary practice in central Oklahoma. They have two sons, Willie and Garrett.


Megan Williams, DVM, DACVS-LA

megan williams

Dr. Williams is an assistant professor. Originally from Leawood, Kan., Dr. Williams earned her BS and DVM degrees from Kansas State University. Her research focus includes equine lameness, particularly regarding suspensory ligament pathology.

In her spare time, Williams enjoys riding her horses and playing with her twins.


Jillian Paegelow, DVM

jillian paegelow

Originally from Louisburg, Kan., she earned her DVM degree at the University of Missouri and completed an internship at B. W. Furlong & Associates in Oldwick, N.J. Her current research interests focus on gastroenterology and infectious diseases.

Home schooled all through high school, Paegelow was able to work full time for an Arabian and Half-Arabian show and breeding operation. In her spare time, she enjoys riding, training, showing and breeding Arabian and Half-Arabian horses as well as baking and cooking, and running and hiking with her dog.


Evan Crisman, VMD, MMP

evan crisman

Originally from Lancaster, Pennsylvania, he earned a Master's of Medical Physics degree and a VMD degree from the University of Pennsylvania. Dr. Crisman's research interests focus on issues related to working horses.

Growing up in Lancaster, Evan spent a good amount of time on Amish farms around working mules and horses. In his spare time, Evan enjoys playing the harp, reading, writing, and drawing. Recently he took up whittling.

Hugh Duddy, DVM

hugh duddy

Originally from Bray, County Wicklow in Ireland, Dr. Duddy earned his DVM degree from Oregon State University in Corvallis.

Hugh was originally an engineer before becoming a veterinarian. In his spare time, he enjoys soccer, rugby, college football, art, traveling, and reading fiction and non-fiction.

Kelsey Jurek, DVM

kelsey jerek

Dr. Kelsey Jurek is an Equine Surgery Resident. Originally from Hudson, Wisconsin, she earned her DVM degree from the University of Minnesota College of Veterinary Medicine. Her research interests are equine orthopedics, equine tendon and ligament injuries and treatment modalities.

Jurek worked full-time as an equine trainer and riding instructor throughout her undergraduate and veterinary education, as well as her first internship.

In her free time, Jurek enjoys riding horses, kayaking and hiking.

Jessica Rutledge, BVetMed, MRCVS

jessica rutledge

Jessica Rutledge is the Equine Internal Medicine resident. Originally from August, Georgia, Rutledge earned her bachelor’s in agriculture from the University of Georgia and a BVetMed (DVM equivalent) from Royal Veterinary College at the University of London. She is interested in endocrinology and was previously an intern at Rood and Riddle Equine Hospital in Saratoga Springs, New York.

Rutledge enjoys traveling, racing, baking, making cocktails, shopping and art museums. She is also a Georgia football fan.


Bob McCarthy, DVM

robert mccarthy

Originally from from Omaha, Nebraska, he earned his DVM degree from Ross University. Dr. McCarthy just finished a year-long hospital rotating internship at Rood and Riddle Equine Hospital in Saratoga, New York.

McCarthy is the proud owner of a 3-year-old Bouvier named Kida. In his spare time he enjoys reading, hiking with his dog, and theater.

Veterinary Technicians

Judy Branson, RVT

judy branson

Judy graduated from Murray State College as Veterinary Technician in 1991. She has been a veterinary technician with the Veterinary Medical Hospital since 1995. Judy enjoys showing miniature horses.

Jennifer Sisk-Milley, RVT

jennifer sisk milley

Growing up in Locust Grove, Okla., Jennifer bred and showed Pony of the Americas. She attended the University of Kentucky and then obtained her Associates in Veterinary Technology from Tulsa Community College in 2008. Jennifer joined the Veterinary Medical Hospital staff in 2009 as a Registered Veterinary Technician. Jennifer is a member of the AAEVT and her interests are equine colic and neonatal critical care.

She is a Veteran of the United States Army National Guard and enjoys spending her time reading, cooking, spending time with her two beautiful children, and trying to spread awareness and be an advocate for her daughter with High Functioning Autism Spectrum Disorder.

Cherlyn Simpson, RVT

cherlyn simpson

Cherlyn graduated from Oklahoma State University in 2012 with a degree in animal science. She has been active in the veterinary field for approximately 10 years. Since then, she has retired from the Army and received her Registered Veterinary Technician license.

She is a resident of Stillwater, happily married and blessed with a daughter. Cherlyn currently raises and shows Boer goats and owns a horse and two dogs.

Veterinary Assistants

Katlin Bullock

katlin bullock

Originally from Bartlesville, Oklahoma, Katlin received her bachelor’s in animal science from Oklahoma State University. Her research interests include neurology and cardiology.

Katlin is third of nine children and in her spare time enjoys quilting and hiking and kayaking with her dogs, Flidais and Ezio.

Robin Jack

robin jack

Originally from Hereford, Texas, Robin earned an associate degree in animal science from Clarendon College and a bachelor’s in animal science from Tarleton State University. She showed hoses on the Ranch Horae team at Clarendon College and currently raises beef cattle with her husband.

In her spare time, Robin enjoys spending time with her husband and three dogs, visiting her home town in Texas and going to her in-law’s in southwest Oklahoma to work cattle.