Dr. Severin Knudsen

Dr. Knudsen was born and raised in Portland before heading to the East Coast for his higher education. After graduating from Veterinary School at Virginia Tech he moved to Boise, Idaho where he has practiced both large and small animal medicine for the last three years. Although he finds beef production to be one of the most rewarding parts of his job, he also will admit to a big soft spot for cats. Enterprise has always been a dream location for both Severin and his wife, Emily Knudsen. Severin and Emily are outdoor enthusiast and look forward to enjoying all the great hiking, climbing, fishing and hunting that Wallowa County has to offer. When not found at home curled up with his wife and three cats, you are most likely to find Severin hiking the hills looking for Chukar with his Brittany pup, Ranger.

Dr. Kala Grover


Dr. Grover grew up in cattle country in SE Oregon. From there she attended college at Washington State University for her undergraduate degree. She was very involved with World Vets and traveled extensively helping impoverished animal populations around the world. Dr. Grover received her didactic training at Ross University and her Clinical Training at Oregon State University. Her love of the outdoors, hunting, horseback riding, black powder competition, and the mountains drew her to Enterprise, Oregon. She has a special interest in equine medicine, specifically sports medicine and reproduction. She also enjoys surgery and working with unique species such as camels and bison. When not at work, Dr. Grover enjoys spending time with her husband, her son, and her horses.

Dr. Karl Zwanziger

Dr. Karl Zwanziger has practiced veterinary medicine in Wallowa County for over 15 years. He most recently owned and operated the Red Barn Veterinary clinic. Enterprise Animal Hospital purchased Red Barn Veterinary in October 2016. Since that time, Dr. Karl sees patients at the Enterprise Animal Hospital on a relief contract basis will continue doing so. Dr. Karl brings years of experience combined with exceptional empathy, compassion, practical knowledge, and a deep love for animals.


Practice Manager
Dera started her role as Practice Manager in March 2019. She produces advertising and marketing content, manages the clinic website and other social media, does the clinic accounting, billing, employee payroll, inventory quality control, and statistical tracking for the clinic, and also works in the clinic as needed. Dera has a background in natural resources and program management.


Tina McDonald has worked in the veterinary field for over 15 years. She enjoys working with small animals the most but is an excellent hand with everything from bulls to horses, also! Tina is a gentle, kind and empathetic spirit and we are grateful to have her as part of the EAH team!

Cheri Miller

Cheri Miller has worked in the veterinary field for more than 20 years. She is an incredible patient advocate, with exceptional animal nursing and handling skills. Cheri maintains her own menagerie of horses, sheep, rabbits, chickens, dogs and cats, and still has energy to be very active in the 4-H clubs of Wallowa County as well as other educational opportunities for young people.

Jill Moncrief

Jill Moncrief is a long-time fixture at EAH and provides exceptional reception and phone duties with a big smile! Jill is a native of Wallowa County and chances are good you have met her somewhere. Jill is in the ‘command center’, scheduling appointments, answering the phone, answering questions, and finishing up your experience at EAH.


Erica McNall comes to us after having worked as an assistant at Red Barn Veterinary. She has provided invaluable help with the transition of Red Barn Veterinary clients and patients to Enterprise Animal Hospital. In addition to providing day to day exam and surgical assistance, Erica also manages the veterinary vaccine, exam, and appointment reminders. Erica loves all her animals — dogs, cats, and horses, but says her special interest is cats.

Alissa Hansen

Alissa grew up on a ranch where she learned the basics of animal care and management. She also was on the Eastern Oregon rodeo court. Alissa’s strong work ethic and attention to detail also makes her the perfect fit for managing inventory — a huge job at Enterprise Animal Hospital.

Claire Melville


Claire Melville was born and raised in Wallowa County and has been with Enterprise Animal Hospital since 2018. Claire enjoys working with all animals but has a particular affinity towards goats. In her spare time, Claire owns and operates Zumwalt Ranch which produces show quality Boer goats and Hereford cattle.