Our Team

Pamela T. Pentz - Owner/Trainer/Manager:

Since 1980 Pam Pentz has owned and operated Derby Farms, a full service training, boarding and breeding facility with an emphasis on dressage. Pam has ridden most of her life and began her professional career when she graduated from the Potomac Horse Center’s Horsemasters course in 1975 with honors in instruction. She began her teaching and show career at the Evergreen Equestrian Center in Kirkland, Washington in 1976. Klaus Albin provided her with her earliest guidance in dressage. She has continued her dressage training over the years training with Robert Dover, Steffen Peters, Inez Propfe-Credo and Jan Ebeling.

In 1982 Pam was licensed by the United States Equestrian Federation as a dressage judge. She was a “R” dressage judge with the USEF for over 40 years as well as a FEI “C” Para-Equestrian Judge. She retired her USEF dressage card in 2022 and her FEI para card a few years earlier. Pam is also a USDF Bronze and Silver medalist with the United States Dressage Federation. As an active breeder of Oldenburg horses she is a member of the Verband der Züchter des Oldenburger Pferdes better known as the German Oldenburg Verband (GOV) and owned the Grand Prix Oldenburg stallion Rodioso whom she competed thru Grand Prix and who was the foundation sire at Derby Farms. Pam lives at Derby Farms in Woodinville, Washington with her husband Peter and together they run the farm and a small antique business that specializes in early American furniture and repair.

All images ©2017, Scarlett, Pentz, Brockman

New Riding Assistant Coming Soon...


Farrier Services

Our resident farrier is Greg Burdett, CJF who is a member of the Washington State Farrier's Association. He is rated as a CJF which means he is a Certified Journeyman Farrier. He can be reached at 206-949-2911. Contact Pam if you have further questions.

Private Farrier

Clients at Derby Farms are under no obligation to use the barn farrier and are more than welcome to use a farrier of their choice.


Veterinarian Care

Rainland Farm Equine Clinic is the 24 hour vet service on call for Derby Farms. The clinic is less than a mile from the farm and houses a full surgical unit as well as having three full time vets on call at all times. Dr. Robert Fleck is the clinics founder and adviser. His associate Dr. Susanna Lewis is a key part of the reproductive care of the Derby Farms Breeding program. For more information on Rainland Farm check out their website.