Jack Root DVM - owner

Dr. Jack Root, Jr., has earned his status as a highly-regarded horseman and accomplished equine veterinarian. Jack’s lifelong passion for the science and practice of horse health and care developed from over nearly four decades of hands on work as an equine veterinarian and his continued studies. Jack has attended advanced studies in areas of reproduction, lameness, sports medicine and dentistry. He is well known for his insight and judgment in diagnosis of difficult cases for horses of all breeds. To many horse owners, breeders, and trainers Jack is an invaluable resource and is referred to for pre-purchase opinions and exams. Jack owned his first horse at age six. By age nine Jack was firmly committed to his career path to become a professional as an equine veterinarian. Even throughout his childhood and youth Jack became well-known as an expert horseman. Jack also began his lifelong passion for Thoroughbred race horses before leaving elementary school. Jack owned his first Thoroughbred broodmare while in undergraduate school. He graduated from Oregon State University in 1974 with two degrees – a B.S. in Biology and a B.S. in General Science. That same year he began his studies at Iowa State University where he graduated with his Doctorate of Veterinary Medicine in 1978. While pursuing his degree Jack interned with some of the most highly-regarded equine veterinarians in the country, including the Hagyards practice in Lexington, KY, and Dr. Tiegland in Florida. Jack is a lifelong learner currently pursuing certification in International Society of Equine Locomotor Pathology (ISELP). Jack is a past President of the Oregon Thoroughbred Breeders Association and has also trained race horses at Longacres, Portland Meadows, Yakima, Bay Meadows and Golden Gate Park. Jack owns and breeds race horses several of which have been sent to and trained by D. Wayne Lukas. Jack is such an avid fan of racing, and the Kentucky Derby in particular, that two Kentucky Derby winners, Grindstone, trained by D. Wayne Lukas, and Giacomo, owned by Adena Springs, stand stud at Oakhurst. If you can locate Jack when he is not performing veterinary work, you may find him introducing farm visitors to both Kentucky Derby winners, at a race track, tending to his farm animals, attending veterinary conferences, or putting up hay. He is extremely proud of his Oakhurst team members and staff and their excellence of always striving to do better for our clients and their horses. 


 Flynn Magorian BVMS - Associate

Dr. Flynn Magorian has a strong interest in the care of foals, broodmares, and stallions and for all areas of reproduction. She also enjoys medicine cases and emergencies.  Dr. Magorian grew up in Portland, OR. She has ridden most of her life and achieved her B rating in the United States Pony Club. Dr. Magorian completed her undergraduate degree at the University of Bristol in England, then returned to Oregon.  Interested in Thoroughbreds, she started working for Ben Root Racing at Portland Meadows as a barn manager and gallop rider. After working for Jack and Cookie’s practice as a veterinary assistant for three years, Dr. Magorian enrolled in the Veterinary Medicine program at the University of Glasgow in Scotland. Upon graduating in 2012, she completed a yearlong Internship at Alamo Pintado Equine Medical Center. This is where her love of all things foals and emergency medicine was born. Outside of work, Dr. Magorian and her husband manage a local farm where they build elaborate play structures for their pygmy goats Bart and Nadia, take their Lab on long walks and tend to their fruit garden. If they actually venture off the farm it’s for good food, friends or to travel the world.


Tara O'brien vmd - associate

Dr. Tara O’ Brien grew up in Long Island, New York where she rode and trained horses in her father's thoroughbred racing stable at Belmont Park.  She later attended the University of Pennsylvania School of Veterinary Medicine, graduating in 2007.  She began her veterinary career practicing sports medicine at Belmont, Aqueduct and Saratoga Racetracks with Dr. Hunt and Associates. Here she had the opportunity to work with the best thoroughbred racehorses in North America.  During this time her passion for lameness and diagnostic imaging led Dr. O'Brien to attend advanced training in lameness and ultrasound through ISELP (The International Society of Equine Locomotor Pathology). In 2014 Dr. O'Brien decided to leave New York to enjoy life in the Pacific Northwest and focus more on sport horses. At Oakhurst Dr. O'Brien loves working with all breeds and disciplines of sport horses, as well as having the opportunity to practice advanced reproductive medicine.  In her free time Dr. O'Brien enjoys hiking the mountains of the Pacific Northwest with her crazy cattle dog Bandit, and eating her way through Portland’s best restaurants.


Sylvia Ouellette DVM diplomate ABVP - Associate

Dr. Sylvia Ouellette (pronounced Wool-let) graduated from the University of California at Davis in 1991 with a Bachelors of Science in Zoology and a Doctorate of Veterinary Medicine in 1995. She began practicing in Southern California at the Racetrack circuit upon graduation. In 2001, Dr. Ouellette left the racetrack to pursue her own practice, specializing in lameness in the sport horse around the greater Los Angeles area. With a strong background in lameness diagnosis and medicine, Dr. Ouellete brings to Oakhurst a passionate commitment to the well-being and betterment of horses. After practicing for 10 years and an extensive application and examination process, in 2005 Dr. Ouellette became board certified as an equine specialist with the American Board of Veterinary Practitioners (ABVP). From 2001 through 2016 for the Dr. Ouellette was also the Radiation Safety Officer and Supervisory User for the Southern California Equine Foundation Nuclear Imaging Facility. Dr. Ouellette is also a Clinical Associate Professor at Western University of Health Sciences, School of Veterinary Medicine. She plans to bring students to Oakhurst Equine Veterinary Services for their equine rotations knowing the important role veterinary practices can play in education and mentorship. Dr. Ouellette decided to leave Los Angeles for a great opportunity to work up in the Pacific Northwest with Dr. Jack Root’s practice. She enjoys the quieter lifestyle pace and less road traffic but the horse traffic in the Oakhurst barns is exciting and energizing. Some of Dr. Ouellette’s favorite pastimes include SCUBA diving, underwater photography and traveling. She has been to many exotic locations over the years diving and taking pictures.

Karen Blake, DVM DACVS - Associate

Dr. Blake grew up in the popular New England town of Burlington, Vermont. She began riding horses at a young age with a focus on jumping & dressage, but also getting experience in western disciplines. Early on, her horse had the first case of Potomac Horse Fever in Vermont; that intense experience with veterinary medicine and severe laminitis fueled her interest in equine veterinary studies. She volunteered at a busy equine referral clinic beginning at age 15 which helped her gain valuable skills she would use for the rest of her career. Dr. Blake graduated from veterinary school at Colorado State, did an internship in Ocala, FL, a fellowship at Oregon State and completed an equine residency program at one of the top schools in the nation, UC Davis. She became Board Certified through the American College of Veterinary Surgeons in 2010 with a specialty in large animal. After a couple years running a hospital in the northwest, life brought her to Park City, Utah where she ran a successful equine practice for several years. During this time, she developed a strong interest & skill set in equine podiatry. Family brought her back to the Northwest which reminds her of Vermont, but with gorgeous pine trees and a more laid back attitude!