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"The Technology to Treat, the Heart to Heal"

Mon-Fri 8am to 5:30pm • Saturday 8:30am to 12:30pm • 24 hour emergency service available to existing clients


The veterinarians at Crater Animal Clinic are committed to excellence in clinical care and client service. From the smallest kitten to the largest draft horse, we treat your animals compassionately, and are continually evolving our practice of veterinary medicine to remain on the leading edge of patient care.

Robert Addington, DVM

Dr. Addington is a native of Klamath Falls, OR. and graduate of the California State Polytechnic University at San Luis Obispo, CA. He graduated in 1963 with a B.S. degree and then attended the School of Veterinary Medicine at Washington State University. He obtained his D.V.M. degree in 1968. Dr. Addington came to Crater Animal Clinic in 1972 after spending 1 year in Carson City, NV. and 3 years in Klamath Falls, Oregon. His primary interests are small animal medicine and surgery. Dr. Addington and his wife of 39 years, Judy, have a son, Greg, and daughter, Jill who have given them 4 grandchildren.In off-hours Dr. Addington can be found enjoying his family, his church or golfing.

Matthew Lawrence, DVM

Dr. Lawrence was born December 21, 1959, in Palo Alto, CA. He moved to the Rogue Valley in 1968 and graduated from Medford Senior High School in 1978.

He attended Portland State University from 1978 to 1982 on a football scholarship. He continued his education at Oregon State University, graduated in 1984 with a B.S. in Zoology and a minor in animal science. He obtained his D.V.M degree from Oregon State University College of Veterinary Medicine in 1988.

Joining Crater Animal Clinic in 1988, he maintains a practice philosophy that advocates and provides a voice for our patients, always looking for the latest in technology and treatments that will enhance and extend the quality of life for his patients. He particularly enjoys surgery on small animals, especially orthopedic surgery.

His outside activities include a hobby farm, woodworking, hiking and camping. He has  two children – Jason and Shalana.

Eric Keiser, DVM

Dr. Keiser is a native Oregonian and graduated from Medford High School in 1975. He attended Central Oregon Community College and Eastern Oregon State College, earning a Bachelor’s Degree in Biology. In 1987, Dr. Keiser graduated from Oregon State University College of Veterinary Medicine.

Dr. Keiser then joined a large animal practice in Mt. Vernon, WA. He and his family missed Oregon and in 1993, returned to the Rogue Valley and joined Crater Animal Clinic. He became a partner in 1995.

Most of Dr. Keiser’s time at Crater Animal Clinic is devoted to treating large animals, the majority of which are horses. He has a special interest in equine dentistry and also enjoys equine reproduction and the challenges of lameness.

Dr. Keiser and his wife Leslie have a son and daughter. He enjoys the outdoors especially running and fishing. Dr. Keiser  currently owns two dogs, a cat and one horse.

Whitney Madigan, DVM

Dr. Madigan grew up in El Cajon, CA.  She moved to Oregon in 2004 to attend Oregon State University and graduated in 2008 with a B.S. degree in Animal Science and minors in Chemistry and German.  She obtained her DVM from Oregon State University in June of 2013.

Her professional interests include small ruminant medicine and surgery, in addition to equine lameness and dentistry.  In her spare time, she enjoys hiking and backpacking with her dog, Karta, and training her horse, Guiness, in three-day eventing. 

Dr. Jamie Inglis

Dr. Jamie Inglis coming soon!

Featured Services

We strive to provide complete care for our patients. Learn more about all the services we provide.
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