Our Team

Dr. Atckison grew up in Southern California. She credits her Dad for getting her into horses and together they spent many weekends trail riding. In addition to pleasure riding, Lisa spent many years riding and showing Hunters until she left home for college. Taking a break from riding to focus on studies and her career she now enjoys riding with her husband, Jim, whether it's riding at home, trail or working cattle with friends.

Dr. Atckison completed her undergraduate degree in Biological Sciences from the University of California, Santa Barbara in 1997 and  her DVM from the University of California, Davis in 2001. After graduation, she completed a medical and surgical internship at Peninsula Equine and continued as an associate veterinarian until moving back to Southern California where she worked with David Wheat DVM. She moved to the Napa Valley in 2005 working alongside Dr. Claudia Sonder at NVVH.  In 2010, Dr. Atckison started her own practice in Sonoma.

Dr. Atckison became certified in Acupuncture in 2007 and in animal Chiropractic in 2010 through the IVCA. She uses an integrative approach to wellness to provide comprehensive care to her patients and enjoys being an integral part of your horse’s heath and success both at home and in the show arena.

Dr. Atckison has a strong interest in Sports Medicine, Lameness and Imaging. She is an active ISELP (International Society of Equine Locomotor Pathology) member and has attended various other sports medicine meetings over the years with some of the nation's most distinguished clinicians and lectures.

When Lisa is not working she enjoys spending time with her husband Jim, and their herd at home, dog Tucker and cats.  She is an avid gardener and loves to cook.

Lisa Atckison, DVM

Practice Owner

Dr. Sorokurs  aka "Dr. Yana" was born in Moscow, Russia and immigrated to California in 1993. She grew up in Palo Alto riding hunters and received her Bachelor’s degree in Animal Science with an equine emphasis. She rode on the hunter/jumper and dressage equestrian teams at Davis.  After receiving her DVM degree from Cornell University she completed an internship at Tufts Cumming School of Veterinary Medicine Large Animal Medicine Department and Massachusetts Equine Clinic. During veterinary school she participated in Rural Area Veterinary Services (RAVS), which provides crucial veterinary services to equids on Native American reservations, where she developed an interest in soft tissue surgery and dentistry.

Yana joined Sonoma Equine in 2016 and greatly enjoys living in Sonoma County. In her free time she likes to hike with her husband and her dog Nymeria or read a good book with her cat Lucy in her lap.

Yana Sorokurs, DVM

Associate Veterinarian

Dr. Szabo (“Dr. Katherine”) grew up in the Pacific Northwest with a love of animals and the outdoors, and began her undergraduate degree in Portland. She took a year off and moved to Europe to work, then was accepted at the Freie Universität Berlin to study veterinary medicine. At this time she also received a unique offer to work with Olympic-level sport horses, and elected to postpone her studies to pursue this opportunity. Four years later she returned to the US and earned her DVM degree with equine emphasis at UC Davis in 2002. While at Davis, she worked as an Equine and Neonatal ICU technician, and spent summer breaks in Mongolia working on horse health projects. More recently, she has helped create continuing education courses for Mongolian veterinarians, and has been involved with medical teaching trips to Bhutan.

Dr. Katherine began working as an equine veterinarian in Sonoma County in 2002 with Dr. Mitch Benson, then spent three years working at Conejo Valley Equine in Thousand Oaks while her husband pursued his medical residency. In 2007 they moved back to Sonoma County, and since then she has worked as an equine veterinarian in Sonoma, Marin and Napa counties. She enjoys all aspects of comprehensive and preventive equine care, especially unusual and complex lameness and medicine cases, and tailoring her approach to each horse's unique circumstances. She is married to an ER doc, and yes, they frequently discuss their cases, which can lead to some unusual dinner table conversations!  In her free time, Katherine enjoys making pottery and volunteering as both a UC Naturalist and Master Gardener.

Katherine Szabo, DVM

Associate Veterinarian

Samantha is a recent graduate of California State University, Chico where she earned a Bachelor of Science degree in Animal Science. She plans to continue her education with further emphasis in equine medicine. Samantha is originally from Redwood City, California but recently moved to Petaluma where she lives with her family and horses. She has shown in a variety of disciplines including western pleasure, barrel racing, and cutting. Currently Samantha enjoys trail riding with her family and competing in local barrel races.

Samatha Corso

Veterinary Assistant

Whitney Milby

Veterinary Assistant

Louise Murphy

Working Student

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