Our Veterinarians
Jack Root DVM - Owner
Dr. Jack Root, Jr. is a highly-respected horseman and accomplished equine veterinarian with a lifelong passion for the science and practice of horse health and care. With almost four decades of hands-on experience, Jack has established himself as an expert in various areas, including reproduction, lameness, sports medicine, and dentistry. His diagnostic skills and judgment in challenging cases for horses of all breeds are widely recognized, making him a valuable resource for horse owners, breeders, and trainers. Many individuals seek Jack's expertise for pre-purchase opinions and exams.
Jack's journey in the world of horses began at a young age. He acquired his first horse at six years old and demonstrated exceptional horsemanship skills throughout his childhood and youth. Even before completing elementary school, Jack developed a deep passion for Thoroughbred racehorses. While pursuing his undergraduate studies, he owned his first Thoroughbred broodmare. Jack graduated from Oregon State University in 1974, earning two degrees—a B.S. in Biology and a B.S. in General Science. Subsequently, he pursued his Doctorate of Veterinary Medicine at Iowa State University, which he completed in 1978. During his veterinary studies, Jack interned with renowned equine veterinarians, including the Hagyards practice in Lexington, KY, and Dr. Tiegland in Florida.
Jack's commitment to continuous learning is evident as he currently works towards certification in the International Society of Equine Locomotor Pathology (ISELP). Over the years, he has made significant contributions to the equine community, serving as the President of the Oregon Thoroughbred Breeders Association. Jack's dedication to the racing industry extends beyond his veterinary expertise, as he has also trained racehorses at prominent racetracks such as Longacres, Portland Meadows, Yakima, Bay Meadows, and Golden Gate Park. Additionally, Jack is an avid fan of racing, particularly the Kentucky Derby. Two Kentucky Derby winners, Grindstone (trained by D. Wayne Lukas) and Giacomo (owned by Adena Springs), stand stud at Oakhurst, a testament to Jack's passion and involvement in the sport.
When not engaged in veterinary work, Jack can be found introducing visitors to the Kentucky Derby winners at his farm, attending races, caring for his farm animals, participating in veterinary conferences, or tending to hay production! He takes great pride in the excellence of his Oakhurst team members and staff, who continuously strive to improve the care provided to their clients and their horses.
Flynn Magorian BVMS - Associate
Meet Dr. Flynn Magorian, an exceptionally dedicated veterinarian, whose passion lies in providing unparalleled care to neonatal foals, broodmares, and stallions, with a primary focus on reproduction. Beyond reproductive expertise, she also finds joy in tackling various areas of veterinary medicine, including internal medicine, emergency critical care, and dentistry. When it comes to intricate dental challenges, Dr. Magorian truly shines, having recently completed an advanced program in intra-oral extractions.
Dr. Magorian's love for animals and equestrian pursuits started at an early age, as she grew up riding and competing in Eventing. Displaying exceptional dedication, she achieved her B rating in the United States Pony Club, demonstrating her commitment to excellence. After completing her undergraduate degree at the University of Bristol in England, where she also honed her skills in Polo, Dr. Magorian returned to her home state of Oregon. Here, she began working as a barn manager and gallop rider at Ben Root Racing. These experiences allowed her to deepen her understanding of equine care and management.
Despite her success in the equestrian world, Dr. Magorian felt a strong calling to explore the field of veterinary medicine, a passion she had nurtured for years. Deciding to follow her heart, she took on the role of a veterinary assistant at Oakhurst for three years, further solidifying her commitment to animal welfare. Finally, in pursuit of her dream, Dr. Magorian enrolled in the renowned University of Glasgow Veterinary School in Scotland. After years of rigorous study and hands-on training, she graduated in 2012, armed with the knowledge and expertise needed to make a difference in the lives of animals. Following her graduation, Dr. Magorian embarked on a year-long rotating hospital internship at the prestigious Alamo Pintado Equine Medical Center in California. This invaluable experience exposed her to various aspects of veterinary medicine, and it was during this time that her passion for Internal Medicine, neonatal foal care, and emergency critical care was sparked.
Beyond her professional achievements, Dr. Magorian finds joy in spending quality time with her husband and two children. Together, they share a love for nature and adventure, often indulging in backpacking and hiking during the summer, and skiing in the winter. Living in the picturesque Pacific Northwest provides them with the perfect backdrop to nurture their family bonds and create cherished memories.
Dr. Magorian's journey from a young equestrian enthusiast to a skilled veterinarian with a passion for specialized equine care is both inspiring and commendable. Her dedication, coupled with her love for the outdoors and family, embodies the true essence of a well-rounded individual making a positive impact on the world of veterinary medicine and beyond.
Dr. Tara O'Brien's journey in the field of veterinary medicine showcases her passion for working with horses and her commitment to professional development. Growing up in Long Island, New York, she had the unique experience of riding and training horses in her father's thoroughbred racing stable at Belmont Park. This early exposure to the world of horses likely fueled her interest in pursuing a career in veterinary medicine.
After completing her undergraduate studies, Dr. O'Brien attended the University of Pennsylvania School of Veterinary Medicine, where she obtained her veterinary degree in 2007. Following her graduation, she embarked on her veterinary career by practicing sports medicine at prestigious racetracks like Belmont, Aqueduct, and Saratoga Racetracks. Working with Dr. Hunt and Associates, she had the opportunity to work with some of the finest thoroughbred racehorses in North America.
Dr. O'Brien's passion for lameness and diagnostic imaging led her to pursue advanced training in those areas. She attended specialized courses in lameness and ultrasound offered by ISELP (The International Society of Equine Locomotor Pathology). This additional training enhanced her expertise in diagnosing and treating lameness issues in horses, further strengthening her skills as a veterinarian.
In 2014, Dr. O'Brien made the decision to relocate from New York to the Pacific Northwest, specifically to enjoy life in that region and focus more on working with sport horses. Joining Oakhurst Equine Veterinary Services, she had the opportunity to work with horses of various breeds and disciplines, catering to the needs of sport horses, while also expanding her working base to include advanced reproductive medicine and podiatry.
Outside of her professional life, Dr. O'Brien enjoys exploring the beautiful mountains of the Pacific Northwest through hiking adventures alongside her energetic cattle dog, Bandit. She also takes pleasure in experiencing the culinary delights offered by Portland's renowned restaurants.
Dr. Tara O'Brien's diverse experiences, education, and commitment to professional growth contribute to her ability to provide excellent care for horses, specializing in lameness, diagnostic imaging, and reproductive medicine. Her passion for her work and her love for the Pacific Northwest's natural beauty and culinary scene further enrich her life.
Tara O'Brien VMD - Associate
Claire Kaplan DVM - 2025 Oakhurst Intern Veterinarian
Claire Kaplan grew up just outside Chicago, Illinois, where her love for horses began at an early age. Thanks to supportive parents, she started riding lessons at a hunter-jumper barn, where she learned not only how to ride, but also how to handle and care for horses.
She went on to earn her undergraduate degree in Animal Sciences from the University of Illinois. During that time, she worked at a Standardbred breeding farm, where her passion for equine reproduction first took root. After graduation, she served for several years as a veterinary assistant with the university’s Equine Theriogenology Service, further developing her knowledge, skills, and interest in reproduction.
Dr. Kaplan earned her Doctor of Veterinary Medicine from Ross University School of Veterinary Medicine in St. Kitts and Nevis, where she also participated in research projects involving both donkeys and dolphins. When not studying, she could often be found playing volleyball on the beach. She completed her clinical year at Massey University in New Zealand, gaining a wealth of clinical experience, broadened perspectives, and lifelong friendships.
Now back in the United States, Dr. Kaplan is excited to bring her expertise in equine reproduction and her dedication to horse health to the Oakhurst team.
Outside of veterinary medicine, she enjoys movies, following her favorite shows, cheering on the Chicago Blackhawks and Cubs, exploring art projects, collecting more books than she can read, and spending time outdoors. She cherishes visits with her two retired horses, Abbey and Eli, who now enjoy the Florida sunshine at a relative’s farm.
