Dr. Kocher has particular interests in veterinary eye surgery and cardiology, in addition to his many years of experience in all aspects of animal care. He is a volunteer on the Board of Governors for the California State Veterinary Medical Association. He also is a member of the American Society for Veterinary Ophthalmology. His hobbies are scuba-diving, bicycling, spending time with his children, and reading. He lives with his wife, two dogs, three cats, and two rabbits in Monterey.

Dr. Kocher co-authored a book called Birds Off the Perch with Larry Lachman and Diane Grindol.