Dr. Janine Callen
Is the owner of Twinbrook Animal Clinic, Inc. She is a 1994 graduate of Purdue University College of Veterinary Medicine. She practiced in Vermont for 2 years, then in Pittsburgh for 1 & 1/2 years before purchasing Twinbrook Animal Clinic, Inc. in 1997.

Dr. Laurie Shessler

Has been an Associate Veterinarian since August, 2003. She received her Doctor of Veterinary Medicine from Purdue University College of Veterinary Medicine in 1995. She worked as a small animal practitioner in the Pittsburgh area for 8 years prior to becoming a member of our team. She lives with her husband (also a veterinarian) 2 children and 2 cats. In her spare time she enjoys running, being outdoors and spending time with her family.

Dr. Shawna Rau

Has been an Associate Veterinarian since June, 2008. She received her undergraduate degree from Cornell University and Doctor of Veterinarian Medicine degree from The Ohio State University in 1998. After graduation she worked in a small animal practice in Boston for 6 & 1/2 years before returning to her hometown of Pittsburgh. She lives with her husband (also a veterinarian) 2 sons, 3 dogs, 3 cats and a tank full of fish. Although she keeps busy with work and family, Dr. Rau enjoys all indoor and outdoor sports (as both a participant and a spectator), good food and day-dreaming about future travels.

Dr. Lacey Davis 

Joined Twinbrook as an Associate Veterinarian in June, 2010. She received a Bachelor's Degree from Ohio State University and obtained a Doctorate of Veterinary Medicine from the University of Tennessee College of Veterinary Medicine. She then went on to perform a small animal rotating medicine and surgery internship at Louisiana State University. She is owned by 3 dogs, 2 cats and a goat. She loves to read, hike, skydive and white water raft in her free time.

Dr. Leeann Oliver

Has been an Associate Veterinarian since 1999.  She graduated from Tufts University of Veterinary Medicine in 1996.  She has lived and practiced in Butler County since graduation.  She is interested in many aspects of traditional medicine and received post graduate training in Veterinary Acupuncture.