Jocelyn Patterson, VMD, DACVECC
Dr. Patterson is a highly regarded critical care specialist with 13 years of experience in critical care and emergency veterinary medicine. She earned her Doctor of Veterinary Medicine degree from the University of Pennsylvania School of Veterinary Medicine in 2004. Dr. Patterson has managed veterinary intensive care units, cared for critically ill patients, assisted with anesthesia for critical surgical patients, and provided support for surgery, medicine, and oncology cases. In her free time she enjoys spending time with her husband and children. Also, she enjoys triathlon, biking, surfing, and travel.
Madison Walsh, DVM, Medical Director
Dr. Walsh grew up in southern Oregon where she had several animals, including a dog, cats, llamas, and a blue and gold macaw. She moved to Mississippi for college and completed her Doctorate of Veterinary Medicine at Mississippi State University’s College of Veterinary Medicine in 2012. Her passions within veterinary medicine include emergency medicine, client education, and building relationships with people and their pets. She is very pleased to be working her dream job as an emergency veterinarian here in Virginia.
Jean Loonam, DVM
Dr. Loonam was raised with multiple animals on her family’s farm outside of Chicago, Illinois. It was then that she decided she would be a veterinarian. She graduated with a Bachelor of Science degree in Biology from Virginia Tech in 1996 and her veterinary degree from the University of Tennessee in 2000. Dr. Loonam completed a year-long small animal internship at the Regional Veterinary Referral Center in 2001. Subsequently she did a year of general practice in Middleburg, Virginia before she was asked to do a year-long surgical fellowship at the University of Tennessee. After her surgical fellowship she joined the emergency and critical care department of a referral center outside of Jacksonville, Florida. In 2004 Dr. Loonam returned to Virginia and assisted in opening what is now the Emergency Division of the Veterinary Referral Center of Northern Virginia.
In her free time Dr. Loonam competes her horses in Dressage, Show Jumping, and Eventing. Also, she enjoys running with her pack of King Charles Cavaliers.
Jessica Diebold, DVM
Dr. Diebold grew up in northwestern Pennsylvania and graduated from Edinboro University of Pennsylvania in 2001 with a major in English Literature and numerous minors including Chemistry, Biology, and History. After realizing that full-time students can’t support themselves, and with a lifetime love of animal science and zoology, she went on to veterinary school and graduated from St George’s University after completing her clinical year at the University of Florida in 2005.
Prior to joining the Veterinary Referral Center of Northern Virginia’s Emergency Team in July 2018, Dr. Diebold worked as an Emergency Veterinarian for 13 years throughout Northern Virginia. Her professional interests include emergency surgery, emergency medicine, and animal welfare.
Jessica and her husband Nick have two children—five-year old Grayson and nine-year old Lyra. She enjoys spending her limited free time with her family, caring for her hobby farm and rabbitry, and traveling. She currently has six dogs, one hairless cat, goats, chickens, ducks, ball pythons, saltwater fish, and innumerable rabbits.
Eric Martinez, DVM
Dr. Martinez was born and raised in Puerto Rico. He attended the University of Puerto Rico at Mayaguez campus for his veterinary prerequisites and participated in multiple research projects. Dr. Martinez was accepted to Louisiana State University School of Veterinary Medicine where he participated in research projects funded by the National Institutes of Health and presented at the North Carolina State University Summer Scholars.
After earning his DVM degree, he successfully completed a small animal medicine/surgery rotation and small animal surgical internship in South Florida. Dr. Martinez relocated to the Northern Virginia area for continued training and liked the area so much that he has decided to settle here. His interests include emergency surgery and medicine.
He enjoys spending his free time with his wife, two beautiful daughters, two dogs and a cat. Diving, sailing , and other outdoor activities are among his favorite pastimes.
Keaton Massie, DVM
Dr. Massie grew up in Oregon and Washington with a childhood dream of working as a veterinarian. After completing a Bachelor of Science degree in Zoology at Washington State University, he moved to Florida to work in the zoo industry on his eventual path to becoming a veterinarian. During the first decade following college Dr. Massie worked as a mechanic, alligator wrestler, and zookeeper focusing on reptiles. He worked with everything from the tiniest Poison Dart Frogs to large King Cobras and Crocodiles. Dr. Massie joined the Army in 2011 and spent three years on active duty living in Italy as an animal care specialist/veterinary technician.
Following his active duty commitment, Dr. Massie earned his veterinary degree from Ross University in St. Kitts in 2018. During veterinary school, Dr. Massie completed research studying the effects of Alfaxalone in Alligators. In addition, he assisted with research on Leptospirosis in Nevishian Donkeys.
In his free time, Dr. Massie enjoys diving, sport/competition shooting, hunting, fishing, and working on cars and motorcycles.
Emily Hemberg, DVM
Dr. Hemberg grew up in Jensen Beach, Florida. She attended Auburn University on a full athletic scholarship competing in Women’s Division I Intercollegiate Volleyball. She graduated with a degree in Zoology and returned back home to attend the University of Florida where she earned her Doctorate of Veterinary Medicine. She completed a year-long rotating small animal medicine and surgery internship at Carolina Veterinary Specialists in Charlotte, North Carolina.
Dr. Hemberg’s interests include diagnostic imaging, soft-tissue surgery/wound management, and emergency and critical care medicine. She is a member of the American Veterinary Medical Association and the Veterinary Emergency and Critical Care Society. When she is not at work, Dr. Hemberg enjoys backpacking, cooking, gardening and spending time with her husband, daughter’s Madeline and Elizabeth, and fur children Rango, Donald, Chipper Jones, and Zip Kitty.