Born and raised in the Washington, DC area, Dr. Dan Frankel graduated from Amherst College in Massachusetts in 1993. He then spent a year training horses and teaching skiing in Jackson Hole, Wyoming prior to attending the Virginia-Maryland Regional College of Veterinary Medicine. There he earned numerous academic awards including the Scholarship for Highest Academic Achievement in Veterinary Medicine.

Dr. Karen Klinger came to Mission Valley Pet Clinic in 2006. Dr. Klinger grew up in Ohio and attended Ohio University where she obtained her Bachelor of Science in zoology in 1990. She went on to receive her Doctorate of Veterinary Medicine from Ohio State University in 1994. After graduating, Dr. Klinger moved to Washington DC for six years where she worked with two veterinary practices before moving to San Diego in 2000.

Dr. Helen Green was born in New York and grew up on Long Island. She received a Bachelor of Arts degree in philosophy from C.W. Post College. She received her Doctorate of Veterinary Medicine degree from the University of Tennessee School of Veterinary Medicine in 1984. She worked as a small animal practitioner in Knoxville for one year prior to moving to San Diego. In San Diego, she worked for many years at North Park Veterinary Hospital until taking over Mission Valley Pet Clinic in 2002.