James C. Prendergast, DVM, affectionately known as “Doc,” passed peacefully on June 25, 2026 in Saratoga Springs, NY. He spent his final days surrounded by friends, family, and his devoted terrier Cutter. Doc is survived by son John and wife Heather, daughter Heather, and his brother George Prendergast of Kerrville, TX. He is also survived by nieces Ashley Prendergast and Laura Prendergast (Griffin Myer), nephew Hunter Prendergast (Chelsea), and a very extensive network of friends. Doc was preceded in death by his loving wife Patti, mother Phyllis, and father Dr. J. L. (Jack) Prendergast of Panhandle, TX.

Jim was raised in Panhandle, TX, where his father, Dr. Jack, was the type of family physician that doesn’t exist anymore – no ailment too big nor too small to merit his attention, and his mother Phyllis managed the doctor’s office, books, and served as substitute nurse. It is easy to see the handprint of this upbringing on his approach with his patients, clients, and friends and family. It didn’t matter if he was at breakfast on Sunday, or actively working up a lameness, he always had time to listen to a problem about an animal and offer guidance or advice.

Doc won the calf scramble contest when he was approximately 12 or 13, and went on to raise about a dozen cattle before graduating from high school. All through junior high and high school, Jim worked as a hired farm hand, fence builder, and rancher for Paul Dauer the patriarch of Dauer Hereford Cattle in Carson County, TX. He ran the mile on the track team and was captain of his high school football team – the Panhandle Panthers. His teammates and coaches selected Jim for the Fighting Heart Award, which recognized the player that left it all on the field and gave everything they had during the football season. This consistent determination and effort in many endeavors continued throughout Jim’s life.

His love of animals – especially horses – was evident from an early age. As a teenager, Jim had a quarter horse colt named Red from the Poco Bueno line. Red was strong, athletic, and obviously well-bred. While Doc enjoyed riding and working horses, he was unusually interested in watching Red and other horses’ movement – a skill that uniquely suited him to his future career with racehorses.

After completing 2 years of college and 3 years of vet school, Doc graduated from Texas A&M with a degree in veterinary medicine at the age of 22; he turned 23 five days after graduation. To “get the green off” of his DVM, Jim got a job with a large animal practice in Big Spring, TX, and then briefly operated his own general practice in Panhandle, before moving to Florida to work for Dr. Chak at Ocala Stud – his introduction to the thoroughbreds of the eastern seaboard with which he would spend the rest of his career.

When the opportunity presented itself, Doc followed the thoroughbreds north to New York to work at Belmont, where he developed a reputation providing veterinary care to elite athletes such as Ruffian and Forego, trained by Frank Whitely, Jr.

Jim married Patti, and in 1982, they bought a farm upstate, and Doc relocated his practice to Saratoga Springs, NY. Doc spent winters in Florida working out of Gulfstream, Payson Park, and as the inspection vet at the Ocala Breeders Sales (OBS). Over the course of his career, Doc was trusted with the care of hundreds of legendary horses with dozens of leading trainers. For nearly 3 decades, Doc worked closely with Hall of Fame trainer Bill Mott, caring for racing greats Cigar (1995 and 1996 American Horse of the Year), Royal Delta, Close Hatches, Unrivaled Belle, and 2019 Kentucky Derby winner Country House.

Jim’s wife Patti passed away in May 2020. Following his own severe illness, Doc retired in 2021. True to character, Jim made a determined effort to regain his health and fitness. His last five years were a gift and Doc made the most out of every day. He spent time with family, worked on his farm, restored two classic pickup trucks, and maintained a full social schedule dining with friends.

This reads like a resume – but to anyone that knew Doc he was so much more than how he made a living or the horses he worked on. Jim had a quick wit and understanding of human nature that meant he always gave the compliment you really needed to hear, noticed the thing you were trying the hardest at, and gracefully overlooked a misstep or struggle. He was warm, funny, stubborn (even ornery), and a joy to know.

The family is planning a celebration of life and will share details when they are available. 

In lieu of flowers, donations can be made in Doc’s memory to The Thoroughbred Retirement Foundation, The National Museum of Racing and Hall of Fame, and The American Cancer Society.