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Mark R. Baus, DVM

Dr. Baus is the son and grandson of large animal veterinarians in South Dakota.  Although this experience shaped his decision to become a veterinarian, the desire and inspiration to provide care exclusively to horses occurred during veterinary school.  Upon graduation from Kansas State University College of Veterinary Medicine in 1981, Dr. Baus joined a veterinary practice in Fairfield, Connecticut with Drs. Howard Raven and Rick Mitchell.


Dr. Baus and Dr. Mitchell founded Fairfield Equine Associates in 1989 where Dr. Baus practiced until he started Grand Prix Equine in 2009. He has provided care to horses in the same region and for many of the same clients for over thirty years.


The Fairfield and Westchester county region has a long tradition of supporting the show horse industry.  Many of the finest horses, riders and trainers in the country have started their careers in this region and Dr. Baus has had the privilege to work on many of those great horses and with many great trainers and riders.


In addition to memberships in the American Veterinary Medical Association and American Association of Equine Practitioners, Dr. Baus is on the veterinary committee for the United States Equestrian Federation and the Horse and Rider Advocates Committee for the United States Hunter Jumper Association. He is on the board of directors for the AAEP and is a past member of the AAEP Ethics Committee. Dr. Baus is a past president of the Northeast Association of Equine Practitioners.


In his off time, Dr. Baus teaches a course in life skills at a local prison. He also enjoys auto racing as a fan and a driver.

Dr. Baus can be reached at mbaus@grandprixequine.com

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Johanna R. Kremberg, DVM


Dr. Kremberg grew up in Brunswick, Maine, riding horses at every opportunity. She majored in English Literature and Spanish at Middlebury College, where she was the captain of the varsity lacrosse team. After her time in Vermont, she worked in botulinum research at Tufts University while she applied to veterinary school.


In 2010, Dr. Kremberg graduated from the Ohio State University College of Veterinary Medicine and spent the following year in a rotating large animal internship at the University of Georgia. At Ohio State, she received the "Excellence in Equine Surgery" award and was chosen as the 2009 AAEP/Hiscox Insurance scholarship recipient.


Dr. Kremberg appreciates all aspects of maintaining the equine athlete and excels in endoscopy, ultrasound guided injection techniques, and preventive medicine. Beyond work, Johanna enjoys time in the outdoors with her husband, two children, and hound dog as well as visiting friends and family in New York City.  She lives in Bedford, NY and continues to ride her Hanoverian Gideon at every opportunity.

Dr. Kremberg can be reached at jkremberg@grandprixequine.com

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Luvie L. Abell, DVM, ICVA


Dr. Abell grew up in New Hampshire and, after several years in Virginia, is thrilled to be back in New England with her husband, Andrew, and their dogs, Philo and Maple. Her love for horses started before she can remember on her grandparents’ farm in Maryland. As she continued riding and competing in hunters, jumpers, and equitation, her passion to pursue equine medicine grew alongside her appreciation for the equine athlete.


Dr. Abell earned her bachelor’s degree from the University of Vermont and went on to Virginia Tech for veterinary school. During veterinary school, she spent every opportunity visiting a variety of phenomenal equine practices, including Grand Prix Equine.


Following veterinary school, Dr. Abell pursued additional training at Blue Ridge Equine Clinic in Virginia. In her rigorous internship year, she furthered her clinical competency in sports medicine, emergency and critical care, ophthalmology, surgery, and internal medicine. Dr. Abell appreciates all aspects of equine practice and has a keen eye for lameness diagnosis. In 2020, Dr. Abell completed her chiropractic certification at Options for Animals. 


Aside from work and riding, Luvie loves hiking with her dogs, cooking with her husband, yoga, and reading.

Dr. Abell can be reached at labell@grandprixequine.com

Caitlin C. Rothacker, DVM, DABVP

Dr. Rothacker's passion for horses started on a quarter horse ranch in Idaho where she initially grew up.  After moving to Putnam County, NY, she continued riding as a working student in a hunter/jumper barn. 


She graduated from Bucknell University in 2005, where she studied biology and gender studies.  In 2010 Dr. Rothacker earned her DVM from the University of Illinois. Following graduation, she moved to New Zealand for a one-year internship at a Standardbred racetrack practice. Upon her return to the US she completed a large animal rotating surgical and medical internship at the University of Pennsylvania’s New Bolton Center. Here Dr. Rothacker stayed on as a resident in Ambulatory and Sports Medicine. She became board certified by the American Board of Veterinary Practitioners in Equine Practice in 2014. 


Dr. Rothacker’s interests include lameness and diagnostic imaging, purchase exams as well as routine preventative care.  In warmer months, Dr. Rothacker can be found tinkering in her garden, often with a headlamp into the evening hours.  She enjoys sharing her love of all things wild with her husband, two children and dog Robin.

Dr. Rothacker can be reached at crothacker@grandprixequine.com

Harry W. Werner, VMD


Following his lifelong passion for animal care and welfare, Dr. Harry Werner attended the University of Pennsylvania’s School of Veterinary Medicine. While attending Penn, he also worked at racetracks and horse shows along the Eastern U.S. coast.

In 1979, he created Werner Equine to offer skilled veterinary care for horses in southern New England & eastern New York. Dr. Werner’s career has focused on lameness, Pre-purchase examination, diagnostic imaging, equine welfare issues, wellness care. and consulting on cases referred by veterinarians, trainers and farriers.

Serving the American Association of Equine Practitioners in numerous positions over 30 years, Dr. Werner was the 2009 President of AAEP. Dr. Werner is a member of the American Veterinary Medical Association Welfare Committee. He serves on the board of the World Equine Veterinary Association and is AVMA Liaison to the Unwanted Horse Coalition. He participates in Project Samana, a working equid (horses, donkeys, mules) welfare project in the Dominican Republic.

Dr. Werner speaks internationally and has authored many articles on Lameness, Pre-purchase Examination, Equine Welfare, Farrier-Veterinarian Relationships, Veterinary Ethics and Lyme disease. Dr. Werner works as a consultant for difficult equine medical cases and for pre-purchase examinations.

Dr. Werner can be reached at hwerner@grandprixequine.com

Cleo Bubulka, DVM

Dr. Bubulka is originally from the suburbs of Chicago, IL, where her love of animals was obvious.  She began riding lessons when she was six and was soon spending all her free time at the barn.  

Dr. Bubulka attended Augustana College, earning her bachelor’s degree in Biology. She went on to earn her D.V.M. from the University of Illinois School of Veterinary Medicine in 2020.


Throughout veterinary school, Dr. Bubulka realized her passion of equine sports medicine.  She is excited to work with Grand Prix Equine as an associate veterinarian to continue her develop her veterinary skills.


In her free time, Dr. Bubulka enjoys running, playing ultimate frisbee, and baking for friends and family as well as riding when she can. 

Dr. Bubulka can be reached at cbubulka@grandprixequine.com

Ella Littlefield, Veterinary Technician

Ella grew up in New Hampshire where her life-long passion for horses began. From a young age, she rode whenever possible, spent long hours at the barn, participated in 4-H and competed at local horse shows. Ella attended Morrisville State College and majored in Equine Science and Management with a western training concentration. During that time, she competed on the western IHSA team for four years. After that, she pursued her dream of showing at AQHA shows nationally, traveling and mentoring with some of the industry’s top trainers. 


Since then, she has worked for a respected equine sports medicine practice as an equine veterinary technician traveling to the Winter Equestrian Festival and Spruce Meadows. She gained invaluable experience and knowledge in lameness, surgery and urgent care. In addition, she has worked as underwriter for an equine insurance company. 


When Ella is not at the barn, she enjoys cooking, gardening, CrossFit and spending time with family and friends. 

Ella can be reached at elittlefield@grandprixequine.com

Heidi Burrows, Veterinary Technician

Heidi grew up in northern New Jersey, where her love for horses started at a young age. She spent every spare minute working and riding at the barn and competed locally on her off-the-track Thoroughbred in the jumpers.


Heidi then attended Cazenovia College with a focus on Equine Business Management. After college, Heidi worked for a large show barn in New Jersey and later worked for a small animal veterinarian when she moved to Connecticut. Heidi found her way back to her passion with horses when she joined Grand Prix Equine.

When Heidi is not working she enjoys spending time with her husband and their dogs, cooking, and still loves spending time at the barn where she rides in Norwalk.

Heidi can be reached at hburrows@grandprixequine.com

Kacey Buckley, Veterinary Technician


Following in her mother’s shoes, Kacey fell in love with horses as a young girl. Growing up in Connecticut she became a well-rounded and versatile rider as a member of Connecticut Valley Pony Club. She discovered her primary passion to be for dressage in which she has continued to ride and compete.

Kacey earned her Bachelor's Degree from Delaware Valley College where she majored in Animal Science and Equine Business, with a minor in Environmental Science. During her four years there Kacey competed and acted as secretary of the Intercollegiate Dressage Team and earned second individually in the nation for 2013 in her division. 

After graduating Kacey worked as an animal control officer for several years before joining GE. In her free time Kacey enjoys riding her pony, Jack and caring for her other three horses. She also volunteers at a local horse rescue and at local horse clubs, and appreciates hiking and nature. Kacey now loves her career as a vet tech and especially enjoys the horses, the clients, and learning and working with the veterinarians.

Kacey can be reached at kbuckley@grandprixequine.com

Jill Masten-Urbain, Inventory Coordinator

Jill grew up in Fairfield, Connecticut and attended Colby Sawyer College. She studied business and competed on the intercollegiate equestrian team. While growing up, Jill rode and competed with Peter Lutz and Peter Wylde in the local horse show scene. She also had the opportunity to work with Olympic Gold Medalist Melanie Smith and Grand Prix rider Jeffrey Welles.


After considering a career in marketing, Jill decided to continue riding and working full time with horses. She joined Dr. Baus and Fairfield Equine in 1989, eventually managing the ambulatory technicians in this large and successful equine practice. She has continued working with Dr. Baus during the creation of Grand Prix Equine in 2009.

Jill’s other interests include Bikram Yoga and traveling to unusual places throughout the world. She occasionally rides horses when time allows and is always interested in nature and the outdoors.

Jill can be reached a jmasten-urbain@grandprixequine.com

Sandy Leslie, Office Manager


Sandy grew up in Stratford, Connecticut and attended the University of Connecticut where she earned her BS in Animal Science. She started riding at the age of 15 and during her time at UConn was a member of the intercollegiate riding and drill teams.


After graduating Sandy worked for a large equine practice recognized throughout the nation as one of the top practices in its field.  During her 23 years there, she gained a vast array of experience while serving in various roles; including as a technician, a front office manager, a manager of operations, and a client services coordinator.


Sandys expertise includes knowledge and skills in lameness, assisting in surgery, providing emergency care, practice management, and customer service.


In her spare time, Sandy likes to spend time with her horse Avy, and her American bulldog Meaty, as well as her family and friends.  She enjoys the outdoors and especially enjoys time at the beach in Maine, where she travels every summer.

Sandy can be reached at sleslie@grandprixequine.com

Paige Nelson, Customer Care Associate


Paige has been a devoted animal lover from an early age. She was introduced to horses by her mother early on and her family quickly realized her unwavering dedication to the horse world. Paige was president of her 4-H Club and a working student in the Farmington valley region where she gained invaluable experience in and out of the saddle. In high school, she was captain of the Avon Valley Show Stables IEA team and was on the riding team at Lynchburg College in Virginia.

Paige returned to Connecticut to work and ride in the Litchfield county area where she worked in the small animal veterinary world as a technician and manager. She not only enjoys riding and competing in the hunters and jumpers but is also interested in draft horses, primarily Percherons, and developed a skill for driving and managing a carriage horse farm. 

In her spare time, Paige enjoys spending time with her thoroughbred, Timber, and her miniature horse, Chipotle. She also enjoys skiing, kayaking, and hiking with her dogs, Teddie and Bean. 

Paige can be reached at pnelson@grandprixequine.com