Katherine Ratliff - DVM

Dr. Ratliff was born and raised in Bakersfield, where she attended Edison School and graduated from Foothill High School in 1970. She went on to Cal State Bakersfield and graduated with a Bachelor of Science in Biology with a minor in Chemistry in 1974. From there she went to UC Davis from which she graduated in 1978 with a Doctor of Veterinary Medicine (DVM).


Allyson Hannan - DVM

Dr. Hannan received her Doctor of Veterinary Medicine degree from the University of California at Davis in 2002. Prior to that she obtained a Bachelor of Arts in Biology from the University of California at Santa Cruz in 1997.


Dr. Hannan is a member of The Veterinary Emergency And Critical Care Society, The International Veterinary Radiology Association, and the AVMA.


She resides with her husband Scott, a devoted father who works in the human emergency medical field, and their two sons. The four legged family members includes cats: Isabelle, a 14 year-old gray and white DSH, Clover, a crazy 15 year-old tortie who was bottle fed, and Gracie, a 14 year-old white DSH. Dogs: Sweet ol' Charlie, a 14 year-old pomeranian mix that was adopted as a stray. Occasionally Charlie can be spotted around the hospital when he comes to visit.


When Allyson is not working or chasing after her two young sons, she enjoys quilting, scrapbooking, and cooking.  


Bob Maruna - DVM

Dr. Maruna graduated from The Ohio State University, College of Veterinary Medicine in 1996 and has spent the last 14 years of practice in emergency and critical care settings. He lives in Pasadena with his wife, Diana, and three daughters, Katie, Jennie Rose, and Josephine.


He is a member of the AVMA and VECCS. His professional interests include trauma surgery, nutritional management of critically ill patients, and fluid therapy. 



Sean East - DVM

Dr. East graduated from Oregon State University, located in Corvallis, Or., in 1996. He then performed a small animal medicine and surgery internship at Colorado State University in Fort Collins, Co. He subsequently went on to work in both small animal emergency medicine and general practice in Colorado, Oregon, Montana and California.


Dr. East enjoys all facets of emergency medicine. His special interests include gastroenterology, pulmonology and soft tissue surgery. He is a member of the AVMA, CVMA, and the Veterinary Emergency and Critical Care Society (VECCS).


He currently lives with his St. Bernard "Leroy Brown" and enjoys road cycling, hiking and camping, the mountains and being outdoors, music entertainment, computer stuff, reading, sports, and trying to catch up on sleep.