About Valley Equine

Horses have always been an integral part of Mario’s life. He is originally from a small horse town on the outskirts of San Diego, CA. Mario grew up riding quarter horses, bulls, trick-roping, and helping his father train horses. Growing up as a Charro (Mexican cowboy) he gained a love and appreciation for the power and versatility of the horse.Naturally at the ripe age of 5 he decided he was going to be a veterinarian. In order to make the dream come true, he worked in a variety of settings from landscaping to roofing to embryo production labs and even caring for primates. He completed his undergraduate degree of Animal Science at UC Davis and DVM at Western University of Health Sciences. The dream suddenly became a reality and he tries to make the most of it everyday. Dr. Tellez will always greet you with a smile and looks forward to seeing his patients and the fantastic humans attached. You can find him enjoying his free time at the gym, on his horse, or socializing with friends and family.

Dr. McBirney is from Santa Clara County (Morgan Hill specifically). She has distinct memories of visiting Tri-County Vet Hospital as a child. In fact, one of her earliest memories at Tri-County was with Dr. Bill Seals. He showed her how to palpate her first cow (a 4-H Dairy project) in the same stocks that she now uses as a veterinarian at the clinic. Dr. McBirney completed her undergraduate degree at Cal Poly in San Luis Obispo and received her veterinary degree at UC Davis. For Dr. McBirney, workdays are never short of variety. When the phone rings at Tri-County, you never know what might come in. Whether it’s a call for a laceration on a horse, cow, sheep, goat, pig, donkey, llama, alpaca, dog, duck, chicken, or anything else with a heartbeat…Dr. McBirney will see it. The question is, can she convince the techs to help her with that chicken?! That’s another story.

Dr. Fielding grew up in Mill Valley, CA and his first job was at Miwok Stables in the Golden Gate National Recreation Area. He led guided trail rides throughout the Marin Headlands as well as Mount Tamalpais and the Point Reyes National Seashore. Dr. Fielding attended college at Harvard University where he rode for the equestrian team (jumping). He attended veterinary school at the University of California, Davis where he was classmates with both Dr. Catherine Jacobs and Dr. Jason Errico. Dr. Fielding then completed a large animal internship at Texas A&M University. After returning to California, he completed board certification in both the American College of Veterinary Emergency and Critical Care as well as the American College of Veterinary Sports Medicine and Rehabilitation. Dr. Fielding began working at Loomis Basin Equine Medical Center in 2003 and is currently one of the owners along with Dr. Diana Stolba and Dr. Catherine Jacobs. Dr. Fielding has continued riding throughout his life. In addition to the college equestrian team, he completed the 100 mile Tevis Cup at age 17 and then again in 2010. Dr. Fielding currently rides a couple of days each week but always wishes that he could spend more time in the saddle. Professionally, Dr. Fielding is dedicated to research and learning in the veterinary profession. He has over 30 research publications on topics including electrolyte and fluid therapy, emergency medicine, endurance horses, and neonatal foals. He is the co-editor of Equine Fluid Therapy, the only textbook focused on fluid and electrolytes in horses. Dr. Fielding received his MBA through the Wharton School, University of Pennsylvania. Dr. Fielding’s goal is to bring high quality veterinary medicine to as many horses as possible.

Daisy needed hours to complete her veterinary assistant program at Central Coast College and landed on our doorstep in June 2016.  To our delight, she fit right into our team.  She has been an assiduous member--helping the doctors out on the road or in the clinic, always quick to lend a hand.

Daisy likes to spend time with her family in Watsonville and riding her horses.

Sofie TenBroek is a dedicated veterinary technician at Valley Animal Hospital, specializing in the care of horses and other large animals. With a passion for animal health and welfare, she brings compassion to her work, ensuring that every patient receives the best possible care. Sofie's commitment to her profession and her love for animals make her an invaluable member of the veterinary team.

Tori Bailey is a dedicated office associate at Valley Animal Hospital, where her passion for animal care shines through in every interaction. With a friendly smile and a warm demeanor, she ensures that both horses and their owners feel welcome and supported. Tori is committed to providing exceptional service, helping to create a positive experience for all who visit the hospital. Her love for animals and attention to detail make her an invaluable part of the Valley Animal Hospital team.