Alamo Pintado Equine Medical Center


Our staff of thirteen veterinarians bring together the foremost in equine veterinary care to all the horses that come to Alamo Pintado. From a child’s beloved pet horse, to working Quarter horses, to show horses of all breeds, to thoroughbred athletes, these horses come to Alamo Pintado seeking the healing and caring touch of our veterinarians.

Our veterinary staff:
• Dr. Doug Herthel, DVM – Founder
• Dr. Mark Rick, DVM
• Dr. Greg Parks, DVM
• Dr. Ed Hamer, DVM
• Dr. Erin Byrne, DVM, Dip. ACVIM
• Dr. Carter Judy, DVM, Dip ACVS
• Dr. Lisa Teske, DVM
• Dr. Troy Herthel, DVM, Dip. ACVS
• Dr. Tyler Newton, DVM
Intern Veterinarians:
• Liz Lee
• Therese Løberg
• Hayley Rasmussen-Ball
• Stasia Sullivan
• Gretchen Syburg

Consulting Veterinarian:
• Dr. Travis Saveraid, DVM, DACVR


Doug Herthel

Dr. Doug Herthel, DVM
Born in Fort Lee, Virginia, completed his undergraduate degree at the University of California at Davis, where he met his wife Sue. He stayed at Davis to complete his Doctorate in Veterinary Medicine. Returning from a trip to Los Angeles, they stumbled upon the Santa Ynez Valley. Stunned by the beauty and tranquility of this yet undiscovered valley, they settled into a small house in Los Olivos and founded the Alamo Pintado Equine Medical Center. Dr. Herthel and Sue have resided in town since. They have two sons Mark who runs Platinum Performance and Troy who is in a surgical residency at Alamo Pintado Equine Medical Center.



Dr. Mark Rick, DVM
A native of Ann Arbor, Michigan, Mark obtained his undergraduate degree at Montana State University, continuing on to Washington State University for his veterinary education. Following his doctorate degree, he completed the Surgical Intern/Residency Program at UC in Davis. There he met his wife Kathy and together moved into the valley, where they have resided in the town of Ballard with their two sons Jonathan and Carson.



Dr. Greg Parks, DVM
Born in Washington, DC, Dr. Parks moved to California to attend the University of California at Santa Cruz, after which he went on to The Ohio State University for his veterinary degree. He participated in the internship program at Alamo Pintado in 1988 and has stayed as a staff veterinarian since. He now lives in the town of Los Olivos.



Dr. Ed Hamer, DVM
Born in Yerington, NV, Dr. Hamer attended the University of Nevada at Reno for his undergraduate degree. He completed his DVM degree from The Ohio State University, coming to Alamo Pintado as an intern the following year. Dr. Hamer has remained a staff veterinarian since then, settling in the town of Los Olivos with his wife Kristina and daughters Hayley and Kassidy and son Hayden.


Erin Byrne

Dr. Erin Byrne, DVM, Dip. ACVIM
From her hometown of Sunol, CA, Dr. Byrne moved to Davis to complete her undergraduate degree at the University of California, where she continued on to achieve her DVM degree four years later. Following her veterinary education, she moved to College Station, TX to participate in the internship program at Texas A&M University, where she remained as a resident in large animal internal medicine. After successfully completing the strenuous board accreditation process, Dr. Byrne is now a Diplomate of the American College of Veterinary Internal Medicine.



Dr. Carter Judy, DVM, Dip. ACVS
Originally from Pasadena, California, Dr. Judy attended the University of California at San Diego for his undergraduate work in Animal Physiology and Neurosciences. He then attended the School of Veterinary Medicine at the University of California Davis. After achieving his veterinary degree, he completed an internship in large animal medicine and surgery at Texas A&M University and a residency in equine surgery and performance evaluation at U.C. Davis. Having successfully completed the strenuous board accreditation process, Dr. Judy is a Diplomate of the American College of Veterinary Surgeons. Dr. Judy has joined the veterinary team at Alamo Pintado and now resides in the town of Ballard.


Lisa Teske

Dr. Lisa Teske, DVM  
Born in Omaha, Nebraska, Dr. Teske moved to Fort Collins to attend Colorado State University as an undergraduate student in agricultural business. After completing her degree, she successfully applied and stayed at CSU to participate in the veterinary program. Accomplishing her veterinary degree, she then moved to Alamo Pintado Equine Medical Center where she took part of the 2000-2001 Internship program. Now Dr. Teske has joined the permanent staff as an ambulatory field veterinarian. She has particular interest in equine field medicine and the sport of dressage.


Troy Herthel

Troy Herthel, DVM, Dip. ACVS
Born and raised in Los Olivos, California, Troy obtained his undergraduate degree in Animal Science and Agricultural Business from California Polytechnic University in San Luis Obispo. He then earned his veterinary degree at Oklahoma State College of Veterinary Medicine. Following graduation, Dr. Herthel completed a year-long internship at Weatherford Equine Medical Center in Weatherford, TX focusing primarily on lameness, surgery, and reproduction in western performance horses. Dr. Herthel is a Diplomate of the American College of Veterinary Surgeons. Troy is the youngest son of Alamo Pintado founders, Dr. Doug and Sue Herthel.


Tyler A 5x7

Tyler Newton, DVM
Dr. Tyler Newton was born in Portland, Oregon but spent the majority of his life in southern California. He attended the University of California, Santa Barbara and where he earned his Bachelor of Arts degree in Cultural Anthropology. Before Dr. Newton went to veterinary school attended Cowtown Horseshoeing School in Miles City, Montana. He completed an internship and worked as a farrier for five years. Dr. Newton has trained and shown in the jumper circuit and has also started several young horses. He earned his Doctor in Veterinary Medicine degree from the University of California, Davis. While attending Davis, Dr. Newton was an active member of the Student Chapter of the American Association of Equine Practitioners, holding positions as Co-President Elect and then as Co-President. He was a student representative for Platinum Performance. Dr. Newton is happy to be joining the APEMC Team and in his spare time, Dr. Newton enjoys photography, hiking, riding and spending time with his wife and two daughters.



Liz Lee

Liz Lee
Liz Lee knew from an early age that she would be a veterinarian. She started volunteering at a small animal clinic as soon as they would let her. Always working toward the goal of becoming a veterinarian, Liz went to UC Davis where she earned a degree in Animal Science with a specialization in Equine Science. During her studies, Liz spent time at the UCD Large Animal Hospital and Horse Barn, worked for a veterinary behaviorist and a local equine practice. She also sailed competitively. After graduation, Liz remained at UC Davis for a year as a research technician working with Thoroughbred racehorses. Always up for traveling, she moved to Scotland and earned her veterinary degree at the University of Edinburgh Royal (Dick) School of Veterinary Studies with Distinction. She was recognized as the best equine student and the best student in equine imaging and orthopedics in her class. During her studies she completed a research project in equine dentistry, completed several externships in the United Kingdom and California, and participated in many societies. Her interests include all things related to equine medicine, but she is particularly passionate about behavior, chronic pain management, and dentistry. In her free time Liz loves hiking, camping, sailing, skiing and traveling with her husband Ryan and their two dogs Thai and Brody.

Therese Løberg

Therese Løberg
Therese Løberg was born in the scenic harbor city of Tønsberg, Norway. Since the time she was a little girl animals have been a large part of Therese’s life. From her family dogs, to her own horses (as well as every other horse in the riding stables), each animal had a special place in Therese’s heart. She began riding lessons at age six and went on to excel in show jumping and dressage competitions, even representing her university at an international competition in Edinburgh, Scotland. Therese studied veterinary medicine at Warsaw University of Life Sciences in Poland where she was involved in the college Gaelic football team. She augmented her education by traveling to the United States to complete veterinary externships in California, Florida and Texas. Her primary interests as a veterinarian include equine sports medicine and surgery. In her free time Therese enjoys traveling, photography, horseback riding, hiking and being outdoors as well as spending time with her friends and family.

Hayley Rassmussen-Ball

Hayley Rassmussen-Ball
Hayley grew up on a small farm in Reno, Nevada. The entire Rasmussen family enjoyed the animals but Hayley always wanted to be around them! As a child she had an amazing pony, pygmy goats, llamas and any number of smaller animals. Hayley’s passion for veterinary medicine developed when she was quite young. She worked as an ambulatory equine veterinary assistant when she was sixteen years old. She knew she had found her calling. She went on to earn her Bachelors of Science at the University of Nevada, Reno and received her Doctor of Veterinary Medicine degree from Washington State University. She loves all aspects of equine medicine but has particular interest in nutrition and the performance horse. In her spare time Hayley enjoys riding her Thoroughbred as well as trail running and road biking with her husband, Brian. She also enjoys time with her rescued pit bull and two cats.


Stasia Sullivan

Stasia Sullivan
Stasia Sullivan was born and raised in Massachusetts. Her childhood was largely spent around horses, beginning with riding lessons at age six and then grooming and competing on the Hunter/Jumper circuit until her early twenties. She credits her fascination with the equine athlete for igniting her interest in veterinary medicine. She earned her Bachelor of Science degree in Animal Science from the University of Connecticut. She then lived in Virginia for two years, where she completed a mare and foal internship at a large Thoroughbred breeding farm followed by working as a nurse and operating room technician at two equine hospitals. Stasia earned her Doctor of Veterinary Medicine degree from Oklahoma State University, where she was heavily involved in multiple leadership positions and club activities. She also performed research involving snake venom and presented her findings at national and international conferences. Upon completion of her internship at Alamo Pintado, Stasia hopes to begin a residency in Large Animal Surgery. Some of her specific interests include colic, soft tissue surgery, neonates and emergency and critical care. Fueled by a passion for teaching plus sharing her love of veterinary medicine and horses, she plans to pursue a career in academia to train future generations of veterinarians. Stasia moved to California with her well-traveled Holsteiner mare and poodle, both who have lived with her in all five different states! Outside of the clinic, Stasia enjoys traveling, riding her horse, Cassy, and exploring (especially beaches!) with her dog, Bella.


Gretchen Syburg

Gretchen Syburg
Gretchen hails from America’s Dairyland. Her love for animals was evident when she was a child growing up on her family’s farm in the small town of Stone Bank, Wisconsin. As a young girl, she would spend most of her time helping her parents care for Pygmy goats, Holstein steers and a variety of chickens, as well as her family’s pony, Smokey. Gretchen caught the horse bug at the age of five and started competing in local 4-H and open western shows. Eventually she started showing on the hunter jumper circuit where she found her niche in the children’s and amateur owner jumper classes. She developed an interest in Warmblood lineage and bred and raised many foals during high school and college. Gretchen received her Bachelors of Science degree from Carroll University in Waukesha, Wisconsin and went on to earn her Doctor of Veterinary Medicine degree from the Ontario Veterinary College at the University of Guelph. She loves all facets of veterinary medicine, but her primary interests are in emergency and critical care, sports medicine and the performance horse. In her time off, Gretchen enjoys anything outdoors, whether it be riding her horses, spending time with her nieces, hiking with her dog or shooting photographs.



Dr. Travis Saveraid, DVM, DACVR

Born in California, Dr. Saveraid grew up in Iowa and received his Doctor of Veterinary Medicine degree from Iowa State University, following in the footsteps of his father and grandfather. After practicing in Maine for two years, he completed a three year radiology residency at Washington State University where he had extensive training in equine and small animal magnetic resonance imaging (MRI). He is board certified by the American College of Veterinary Radiology. Dr. Saveraid is currently a clinical faculty member at the University of Minnesota College of Veterinary Medicine where he is developing the equine and small animal 3T MRI clinical investigation program. He has served as the interpreting MR radiologist at Alamo Pintado from the time of the first MR study in March 2006. As of September 2007, Dr. Saveraid has interpreted over 800 MR exams from 400 horses at Alamo Pintado. He also reviews the small animal MR scans from Alamo Pintado and serves as a consulting radiologist in small animal and equine MRI for veterinary hospitals across the country.