Emergency Veterinarians

Emergency Doctors

Kim Russell, VMD

Emergency Vet

Dr. Russell received her Bachelor of Science from Washington and Lee University in 2001 and her veterinary degree from the University of Pennsylvania in 2006. After graduation Dr. Russell worked in equine practice before focusing on emergency medicine.


Dr. Russell was previously the director of emergency and critical care for the Rutherford Memorial Hospital of the PSPCA. Dr. Russell also served as the lead forensic veterinarian for the PSPCA. She has testified throughout Pennsylvania as a veterinary expert and has been featured on the television show Animal Cops Philadelphia.


Dr. Russell’s professional interests include emergency medicine and surgery, equine medicine, and animal welfare. In her free time Dr. Russell enjoys competitive horseback riding, skiing, scuba diving, and hiking with her dogs. Dr. Russell is a member of a number of professional associations and is USDA accredited. Dr. Russell lives in Chester County with her two dogs and four horses.

Kelley Collins, DVM

Emergency Vet

Dr. Collins was educated at the University of Delaware where he received a bachelor’s degree in History. He furthered his education at Gregorio Araneta University in Manila, Philippines as well as the University of Georgia’s College of Veterinary Medicine, where he achieved his veterinary degree.


He has since worked in a number of veterinary care facilities such as: emergency clinics, small animal hospitals, MRI specialty practices and veterinary imaging consulting services. He is a member of a number of professional associations.

Nama Oppenheimer, VMD

Emergency Vet

Dr. Oppenheimer graduated Veterinary School at the Hebrew University of Jerusalem in 2010. She then completed a one-year small animal internship in the teaching hospital of the Hebrew University that focused mostly on emergency medicine. Since then, she worked for 3 years in a major Emergency and Specialists Center in Israel as an emergency veterinarian. Her main interests are emergency medicine, critical care and internal medicine. She lives with her husband Ziv, a botanist at the University of Pennsylvania, her cat Pudding and her dog Bruno.

Dr. Vanessa Schmid

Emergency Vet

Dr. Schmid was born and raised in a suburb outside of Philadelphia.  She started her educational endeavor at The Pennsylvania State University to obtain her B.S. in Biology.  In pursuing her Doctorate of Veterinary Medicine, she studied at The Ross University School of Veterinary Medicine, and transferred to the University of Pennsylvania for her final clinical year.  Her main focus and passion is emergency medicine, critical care and emergency surgery.


Dr. Schmid currently owns a Presa Canario, named Peh-Lei, which is the love of her life. In her leisure time outside of work, she enjoys spending time with family and friends, spending time with her dog, enjoying the outdoors, photography, and traveling.

Dr. Jennifer WIntergrass

Emergency Vet

Dr. Wintergrass is a 2013 Graduate of the Ross University School of Veterinary Medicine, and holds a Bachelor of Science in Small Animal Medicine from Delaware Valley College. She is an active member of the Animal Science Society and PAWZ. In her spare time, she enjoys running, travelling, music, arts and crafts and website construction/graphic design.

Dr. Caitlin Russell, VMD

Emergency Vet

Dr. Russell graduated from the University of Pennsylvania with a BA in Communication in 2007. She lived in San Francisco and worked at Google Inc., before deciding to pursue veterinary school. After completing her prerequisite courses, she went on to obtain her veterinary degree from the University Of Pennsylvania School Of Veterinary Medicine. Her professional interests include emergency and critical care, surgery, and shelter medicine.

Dr. Russell lives in Philadelphia with her border collie, Lola. Outside of work, she enjoys playing squash and tennis, reading, traveling, and spending time in the Adirondack Mountains.

Dr. MJ Potter

Emergency Vet

Dr. Potter earned her bachelor’s degree from the University of Delaware and her master’s from Temple University, before earning her VMD degree at the University of Pennsylvania’s School of Veterinary Medicine, where she graduated cum laude. She has 18 years of experience in veterinary medicine, with a primary focus on emergency and critical care. Dr. Potter also has an interest in oncology, internal medicine and surgery and is a member of the American Veterinary Medical Association.


She lives on a farm, where she raises horses, cattle, sheep, chickens and her favorite: a flock of peacocks. Dr. Potter also competes every year at Devon Horse Show in the carriage driving competition.

Dr. Kristen Nau

Emergency Vet