Burke Animal Clinic has been providing comprehensive and progressive veterinary care in Northern Virginia since 1979. We practice integrative medicine by offering traditional veterinary services alongside alternative therapies. Our alternative therapies are complementary to traditional medicine, providing us more resources to help keep your pet healthy and to treat chronic conditions and provide drug-free alternatives to pain management.

Our compassionate and dedicated healthcare team is committed to providing very personal attention, working with you to understand and address the health needs of your pets.

John Herrity, DVM, Practice Owner

Dr. Herrity has been caring for pets in Northern Virginia for over 25 years. He enjoys the diversity of veterinary medicine with a focus on ultrasound, internal medicine and surgery. Over the years he has expanded his practice of medicine to include alternative and holistic therapies, including stem cell therapy, Veterinary Orthopedic Manipulation, and cold laser therapy, and Bicom bioresonance therapy. He is continually exploring new and exciting ways to identify our pets’ health issues and determine the best treatments to meet their needs.

In order to achieve his dream of working with animals, Dr. Herrity attended Virginia Tech and graduated with honors from the Virginia-Maryland Regional College of Veterinary Medicine. Dr. Herrity and his wife, Michelle, have two sons, Bryan and Patrick, and two daughters, Kelsey and Jessica. A Labradoodle named Bradley and a yellow lab named Merlin complete their family.  Read a little more about Dr.Herrity in the February 2014 issue of the Virginia-Maryland Regional College of Veterinary Medicine newsletter.


Alex Colvin, DVM, Practice Owner

Dr. Colvin was raised in northern Virginia and graduated from Lake Braddock High School. He worked at Burke Animal Clinic while in high school until moving to Reston. He received his undergraduate degree in biology, summa cum laude, from Virginia Tech and DVM from Virginia-Maryland Regional College of Veterinary Medicine. Dr. Colvin began practicing in 2001 at Clocktower Animal Hospital. He rejoined Burke Animal Clinic in October 2009. Dr. Colvin and his wife, Dana, live in Ashburn with their daughter, son, two cats and a dog.


Elizabeth Johnson, DVM, Associate Veterinarian

Dr. Johnson joined the Burke Animal Clinic Team in 2005 upon graduation from Virginia-Maryland Regional College of Veterinary Medicine.  Dr. Johnson loves her job helping people and their furry family members live healthier, happier, longer lives together.  She strives to be proactive in pet health care and makes individualized health care plans for patients who need them.  She does her best to make all veterinary visits pleasant, positive experiences for her patients.  She recently received her Fear Free certification. She specializes in using low-stress techniques to help patients enjoy their veterinary visits, or at least be more at ease during their appointments.  In addition to traditional medicine, ultrasound, dental and surgical care, she supports alternative therapies, integrating them into her patients’ individual health care plans.   Dr. Johnson has a fondness for both canine and feline behavioral consultations and works with several local rescue groups.   Dr. Johnson received Northern Virginia Magazine’s Best Veterinarian award for 2017 and 2018 and was interviewed by NBC regarding one of her rescue cases.  In her free time, she enjoys spending time with her family, gardening (flowers, vegetables, and fruit), and creative art activities.  She also loves working with horses.  She currently resides in Fairfax with her husband, daughter, and rescued pup, Kenny.