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Hours of Operation

Monday – Friday

8:30 – 5:30


8:30 – 12:30

Emergency calls are answered 24 hours a day.

Equus Veterinary Service, P.C.
14671 South Leland Road
Oregon City, OR 97045
(503) 632-2100 Phone
(503) 632-2112 Fax

The Equus Veterinary Service Doctors


Steve D. Sundholm, DVMDr. Sundholm's interest in veterinary medicine developed as he was growing up in Iowa. An avid horse lover since childhood, Dr. Sundholm trained his own horses and was accomplished in barrel racing and pole bending. After graduating from the Iowa State University College of Veterinary Medicine in 1978, Dr. Sundholm practiced equine and small animal medicine in his hometown for five years. Since 1983, he has been an equine exclusive practitioner in the Oregon City area. A past president of the Northwest Equine Practitioners Association (NEPA), Dr. Sundholm maintains memberships in several professional associations including AAEP, AVMA, OVMA, NEPA, and the International Association of Equine Dentistry (IAED). Dr. Sundholm has taken many extra courses in equine dentistry to supplement his education and enjoys helping horses with their dental equilibration needs. He passed all levels of certification in the IAED and served as an examiner for this organization, administering dental certification testing for other practitioners across the country. Dr. Sundholm is excited about all aspects of equine veterinary medicine, especially surgery, reproduction, lameness and dentistry. Instrumental in the design and building of the new clinic, Dr. Sundholm welcomes the opportunities for enhanced client services. In his spare time, Dr. Sundholm enjoys bird hunting with his dogs, ballroom dancing, a variety of outdoor recreational activities, and power tools.


HELEN F. SIMS, DVMDr. Sims grew up in Colorado where she developed a love of horses from a young age, riding and showing on the local hunter/jumper circuit with OTTBs that she trained. She then attended Colorado State University for both her undergraduate and veterinary studies, graduating with honors near the top of her class. During undergrad and veterinary school, she also worked as a veterinary assistant at Countryside Large Animal Veterinary Services in Greeley, Colorado, while continuing to ride and show. Following graduation from veterinary school, Dr. Sims completed a rigorous, year-long internship at Steinbeck Country Equine Clinic in Salinas, California, where she had the opportunity to continue training at a large referral hospital under the guidance of doctors boarded in surgery, internal medicine, sports medicine and equine practice. Her professional interests include lameness, imaging and internal medicine, and she is excited to be treating horses in the beautiful Pacific Northwest! Outside of work, Dr. Sims can be found riding her thoroughbred, Timmy, hiking with her dogs Hermie and Nelly, cooking or just spending time outside.


Ashley A. Magee, DVM, DACVSOriginally from the West Linn area, Dr. Magee earned her undergraduate degree from the University of Oregon in 1986 before pursuing her veterinary degree at Tufts University where she graduated in 1995. After completing an internship in large animal medicine and surgery at Washington State University in 1996, Dr. Magee went on to a surgical residency program at University of California Davis, which she finished in 1999. Since earning her board certification by the American College of Veterinary Surgeons in 2000, Dr. Magee has performed surgery in equine hospitals here in Oregon and as a visiting faculty surgeon for Washington State University and provided mobile equine surgical services for several equine hospitals in the region. Currently Dr. Magee is a staff surgeon for Dove Lewis Emergency Animal Hospital and also performs elective surgical procedures here at Equus Veterinary Service. Dr. Magee is a member of PVMA, OVMA, AVMA, ACVS, VECCS, AAEP and the Society of Phi Zeta. Outside of work, Dr. Magee enjoys horseback riding, traveling, hiking and other adventures with her husband and twin girls.

Support Staff

VICKI WEEDVICKI WEED has enjoyed her work as receptionist at Equus since 1996. Vicki’s first horse, given to her before she could walk, was her constant companion as a child. Her love of horses and desire to work with people provide her with inspiration to continue learning about horse care in order to provide excellent client service.

ANGELA SUNDHOLMANGELA SUNDHOLM, a former high school math teacher, manages the business aspects of the veterinary practice. Angela has fond memories of her pony Sassy, husband Steve’s POA Skeeter, and a crazy horse show event called the "panty race." Angela assisted in the design and building of the new clinic and is excited about the expansion in client services.

KAY LOVELLKAY LOVELL - Kay has loved horses and worked with them all of her life, both with trainers and on her own. She is equally passionate about spending time with her family. Kay enjoys working at the clinic, helping horses and their owners, and being part of the Equus team.

BRYNN CHORUBYBRYNN CHORUBY - Brynn has been riding since she was eleven years old. After trying her hand at many different disciplines, she finally found Three-Day Eventing and is now bringing two young horses up the levels. Brynn graduated with her EMT from the combined program of Oregon Institute of Technology and the Oregon Health and Science University in 2017. She loves her job at Equus because she gets to be around both horses and medicine all day.

TAYLOR KERSEYTAYLOR KERSEY - Taylor was born into a horse-loving family and worked with horses for many years before becoming a veterinary assistant at Equus. She has been a competitive rodeo athlete since she was 6 years old. After graduation from Canby High School, Taylor studied at Central Arizona College where she competed on a full ride rodeo scholarship and majored in Agriculture Business. Taylor enjoys spending her free time working with her young barrel horses, roping and going to jackpots. Her long-term goal is to open an equine rehabilitation facility with swimming pools and aqua-tread machines.


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Equus Veterinary Service, P.C. | 14671 S. Leland Rd. | Oregon City, OR 97045

Emergency calls are answered 24 hour a day. | Phone (503) 632-2100 | Fax (503) 632-2112