Our Specialists

Dr. Philip Vasseur

DVM, DACVS – Orthopedic Specialist

Dr. Philip Vasseur is a Diplomate of the American College of Veterinary Surgeons; he is available for consultation and frequently comes to Woodland Veterinary Hospital to perform orthopedic specialty procedures. Dr. Vasseur is a graduate of the University of California at Davis; he completed an internship at the West Los Angeles Veterinary Medical Group and a residency at the Animal Medical Center in New York City. He became board certified in surgery in 1982.  He served as professor of orthopedic surgery at UC Davis from 1979 to 2003, during which time he published over 75 scientific papers and served as Editor-in-Chief of Veterinary Surgery for 11 years.  He co-edited the textbook General Surgery and was the Section Editor for the Orthopedic Section of the Textbook of Small Animal Surgery (2nd and 3rd editions).  He has lectured nationally and internationally on orthopedic topics and did the primary clinical research leading to the approval of carprofen (Rimadyl®).  He served as an instructor at the Synthes Advanced Orthopedic Course and taught orthopedic seminars in Europe and Japan.  Dr. Vasseur is licensed to perform the TPLO procedure and has extensive experience with fracture fixation techniques. 

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Dr. Leslie Larson Cooper

DVM, DACVB – Behavioral Specialist

Dr. Cooper was born in Turlock and raised on a dairy farm in Hickman, California. She received her bachelor’s degree in Animal Science from the University of California, Davis, in 1976. She then continued her education at UC Davis, where she earned her doctor of veterinary medicine in 1980. 

Dr. Cooper served on the faculty of the Behavior Science department at the Veterinary Medicine Teaching Hospital at UC Davis from 1980 to 2002. She passed her specialty board exams for the American College of Veterinary Behaviorists in 1995, the first year they were given. She has special interests in veterinary behavior and the human-animal bond. She has been treating dogs and cats for behavioral appointments at Woodland Veterinary Hospital for many years. 

She and her husband, Phil, have two sons, Ben and Nick. Their family also includes Rocky, a one-eyed “pirate” cat. In her time away from veterinary medicine, Dr. Cooper enjoys quilting, singing in two choirs, and reading what she calls “escape literature.”

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Dr. Craig Long

DVM, DACVR – Radiology Specialist

Following a one-year associate veterinarian position in general practice, Dr. Long returned to UC Davis to complete a four-year residency in radiology. He joined the faculty at UC Davis as half time Clinical Professor position from 1999 through 2005, and is still involved with UC Davis with radiology resident training. He has been an associate with Veterinary Medical Imaging since 2000, and has been working with Woodland Veterinary Hospital since 2002.

Dr. Long’s areas of special interest include diagnostic ultrasound and interventional radiology. His personal favorite activities include flying, kayaking, home improvement, and outdoor adventures with the family.

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Dr. Eric Herrgesell

DACVR, DVM – Radiology Specialist

Dr. Herrgesell completed his training in Veterinary Radiology in 1997 with the completion of the board certification exam and began as a member of the staff at the University of California Davis in the teaching hospital. While at the university, Dr. Herrgesell was involved in the development of ultrasound as an elective course for the second and third year students in addition to clinic duty. Since 2005, he has been in private practice in the greater Sacramento area, providing radiology and ultrasound support for the area veterinarians, including Woodland Veterinary Hospital. He remains very involved with professional speaking conferences around the country and internationally.

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Dr. Carl Koehler

DVM, DACVS – Soft Tissue/Orthopedic Specialist

Carl Koehler attended Cal Poly, San Luis Obispo for his undergraduate work in 1993. He then went to UC Davis for Veterinary School and graduated in 1998. After a 1 year rotating internship at California Animal Hospital, he returned to UC Davis to attend graduate school. After a year of advanced training at Gulf Coast Veterinary Specialists in Houston, he returned to UC Davis for a residency in Small Animal Surgery. He became a Diplomate of the American College of Veterinary Surgeons in 2005. In his time off, Dr. Koehler enjoys spending time with his wife and daughters. He enjoys hiking and other outdoor activities.

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Dr. Brian MacKie /Cardiology

DVM, DACVIM – Cardiac Specialist

Dr. Brian MacKie earned his DVM at Washington State University, graduating in 2005. Following his graduation, he completed a one year rotating internship in small animal medicine and surgery at VCA Sacramento Animal Medical Group in Sacramento, California. He then moved out to the University of Wisconsin in Madison where, from 2006-2009, he completed his residency training in Cardiology. During his time there, Dr. MacKie helped implement the use of the Amplatz Canine Ductal Occluder at the University of Wisconsin, authored a paper on the use of an implantable ECG monitor for the evaluation of syncope in dogs, and assisted in prospective research on pulmonary hypertension and cardiac biomarkers. In July 2009, Dr MacKie successfully completed all of the requirements for board certification and is now a Diplomate of American College of Veterinary Internal Medicine in the specialty of Cardiology.

The main services Dr. MacKie brings to Woodland Veterinary Hospital are echocardiography and electrocardiography (ECG). Echocardiography will be used to evaluate cardiac function including systolic function, diastolic function, and valvular integrity as well as evaluate for congenital or acquired heart diseases from the most common to more complex. ECG will accurately diagnose cardiac arrhythmias and implement the best course of therapy or monitoring the efficacy of antiarrhythmic therapy. Dr. MacKie can also optimize congestive heart failure therapy for patients through the use of all three modalities to ensure the best treatment are chosen.
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Dr. Peter Walsh

DVM, DACVS – Soft Tissue Specialist

Dr. Walsh is a 1994 graduate of Colorado State University’s School of Veterinary Medicine. He also has a Masters in Veterinary Science. He completed an internship in small animal surgery and medicine and a surgical residency at the Western College of Veterinary Medicine in Saskatoon, Saskatchewan, Canada. Dr. Walsh joined the faculty at the University of California, Davis where he rotated coverage for all three of the small animal surgical services, and ultimately was instrumental in developing and running the small animal surgical oncology service. He is now in private practice and started Veterinary Specialists Group (VSG) which provides both orthopedic and soft tissue surgical service in the Northern California area. Dr. Walsh is board certified with the American College of Veterinary Surgeons and has a particular interest in surgical oncology and reconstructive surgery. He is considered one of the leading authorities on limb-spare procedures in dogs with bone tumors.

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