Dr. Deborah Sieber, a native of the United Kingdom, graduated from the Royal Veterinary College (London), after having spent 12 years training racehorses at top level. Dr. Sieber has in-depth knowledge and passion for the racing industry, but also owned her own practice in UK, with a work load made up of clients from all aspects of the horse world.​ In 2015 she spent time working as a veterinarian in Singapore, with a variety of top-level Dressage, Jumping and Polo Ponies. Upon her return to the United States in 2014, Dr. Sieber opened Barnside Veterinary Services in Armonk, NY. Since 2017 Dr. Sieber has also been working as an Independent Contractor at Equinosis LLC, manufacturer of the Equinosis Q with Lameness Locator, an inertial sensor based lameness measurement system for horses, providing demonstrations and training to equine veterinarians around the world. She also supports marketing and training activities through CPD meetings, trade shows and informational webinars.

Mary received her DVM degree from the University of Georgia before completing a residency in large animal internal medicine at the University of Florida. She became a Diplomate of the American College of Veterinary Internal Medicine (Large Animal) in 1996. Mary completed doctoral work in Physiology at the Medical University of South Carolina with work in endotoxemia and endotoxin tolerance. After this, she completed two years in a cardiology/ultrasound training program in the Sports Medicine section at the University of Pennsylvania New Bolton Center before taking a position as a Lecturer in Equine Medicine at the University of California, Davis for 3 years. Mary returned to New Bolton Center to work in their treadmill facility for 3 years, before working as an associate clinical professor in Large Animal Medicine at the University of Minnesota. Currently, she is a part owner of Equine Sports Medicine Consultants, an ambulatory consulting practice focusing on sports medicine and imaging, cardiology and internal medicine, in southeastern PA. Mary’s clinical interests include cardiology and respiratory disorders and how dysfunction in these systems affects performance, as well as neonatology and critical care. She has published several scientific manuscripts in peer-reviewed journals, as well as presented numerous abstracts at national and international meetings, and participated in many imaging wet labs at regional and national meetings. 

Matt grew up with horses in Reno, Nevada. When he was 12, he decided to become an equine veterinarian. He spent 11 summers working as a back-country guide at McGee Creek and Mammoth Lakes Pack Outfits, where he met his wife Tiffany (who is now a hospital technician at Steinbeck Equine). Matt enjoys the balance of time in the field seeing horses where they live, and the challenging lameness and diagnostic imaging cases he sees in the clinic.

• 2015 Board certified in Equine Sports Medicine and Rehabilitation with the American College of Veterinary Sports Medicine and Rehabilitation (ACVSMR)
• 2001 joined Steinbeck Country Equine Clinic, Salinas, CA
• 2000 University of Pennsylvania, New Bolton Center, Fellowship in Large Animal Ultrasound and Cardiology
• 1999-2000 Alamo Pintado Equine Medical Center, Internship in Diagnostic Imaging with ultrasound, radiology, nuclear scintigraphy (bone scans) and computed tomography (CT) modalities
• 1997-1999 Mountain View Veterinary Hospital, Vancouver, WA, Ambulatory Veterinarian
• 1996-1997 Alamo Pintado Equine Medical Center, Internship
• 1996 UC Davis, Doctorate of Veterinary Medicine
• 1992 Cal Poly San Luis Obispo, BS Animal Science