Total Performance Equine is an ambulatory specialty practice–meaning that you and your horse receive board-certified expertise at your own barn. Our emphasis is on outstanding patient care and client service. Our approach balances common sense with the most up-to-date science in order to get your horse back to Total Performance.


Equine Veterinarian Ultrasound

Dr. Jamie Textor, DVM PhD Dipl ACVS ACVSMR, is a board-certified specialist in both Large Animal Surgery and Veterinary Sports Medicine & Rehabilitation. She graduated from Colorado State University in 1998 and completed her residency at Cornell in 2002. Dr. Textor worked in universities (Massey University, Oregon State University, UC Davis) for 10 years doing surgery, treating patients, teaching, and doing research. After earning her PhD in 2013, she was ready to get back to treating patients full-time, and founded Total Performance Equine in 2014. Her vision for the practice was to bring referral-hospital expertise out to the field—along with excellent patient care and client service—and that remains our practice goal every day. Dr. Textor lives in Martinez with her family. She loves all things active and outdoors, serves her community through Rotary, and fits in a riding lesson whenever possible!


Dr. Brian Renner, DC ARMRIT AVCA, is a Licensed Chiropractor recognized by Parker College of Chiropractic, and the American Veterinary Chiropractic Association, as a specialist in Animal Chiropractic.

After completing his degrees, Dr. Renner had been instrumental in various scientific advancements in Magnetic Resonance Imaging. He’s been involved in the development of spinal treatment modalities from surgical procedures to therapeutic procedures, and has held faculty teaching positions. His focus in practice is on providing specific and precise chiropractic adjustments in an effort to maximize the overall health and performance of his patients. Dr. Brian’s patients not only recognize him for the quality of care they receive, but also for the caring nature he brings in doing so.

Dr. Renner grew up on a large farm in Ohio, working with horses, cattle, and dogs. He won the Ohio High School Rodeo Championship and went on to compete at the National Finals in Team and Calf Roping. He continued a short run of professional competition until college necessitated his full attention.

Schedule an appointment with Dr. Renner by calling 714-989-6473 or email

Dr. ThorntonDr. Thornton was born and raised in San Diego, California where she developed a passion for horses from a very young age. After hours spent at the barn and weekends devoted to horse shows, she earned her United States Dressage Federation Bronze and Silver Medals before the age of 20. It was her experiences in the show ring that ignited her interest in sports medicine and rehabilitation.

Dr. Thornton attended both undergraduate and veterinary school at UC Davis. As a veterinary student, she studied under Dr. Sue Stover conducting research on the effects of synthetic footing surfaces on the distal limb kinematics of dressage horses. This work was presented at the International Conference on Equine Exercise Physiology (2014), the American Association of Equine Practitioners Conference (2016) and featured in the publication The Horse (2016). Following vet school, Dr. Thornton accepted a one-year internship position at Fairfield Equine Associates in Connecticut, under the mentorship of Drs. Richard Mitchell and Ryland Edwards III, where she gained experience in sports medicine, lameness and general care of the performance horse. This experience also gave her the opportunity to spend time in Wellington, FL with intensive exposure to sports medicine in the show circuit and FEI setting.