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Robert "Vince" Hawley
Mark Chappell | DVM, MPH, DACLAM, DACVPM
Dr. Chappell earned his Bachelor of Science degree at George Fox University in Newberg, Oregon in 1992 with a pre-medical emphasis. He served in the United States Navy Reserves between 1988 and 1997 in an enlisted status. He obtained an active duty commission in the United States Army Reserves in 1997 where he served in a reserve status until entering active duty as a veterinarian in 2001. He continues his active duty service as a Lieutenant Colonel. Dr. Chappell has worked in the field of veterinary medicine since 1993. Prior to attending veterinary school in 1997, he worked as an animal care technician at multiple veterinary hospitals between 1992 and 1997, including ensuring preparation and successful completion of AAHA (American Animal Hospital Association) accreditation. Since graduating with a Doctor of Veterinary Medicine in 2001, he has served in multiple areas of veterinary medicine including clinical medicine, preventive medicine, and ensuring animal welfare in research settings. As a clinical veterinarian for the US Army, he managed two major veterinary programs including two of two major military installation veterinary clinics, audits of civilian food producers, management of base and fleet subsistence teams, inspection commissary facilities, conducting of food and water vulnerability assessments for the military, and participation in international animal care operations and veterinary related presentations. He provided full service surgical and medical care for all species of service member owned pets as well as providing medical and emergency care for all breeds of military working dog.
He earned his Doctor of Veterinary Medicine degree at Oregon State University in 2001. He also earned a Masters of Public Health at the Uniformed Services University of the Health Sciences in Bethesda, Maryland in 2008. In 2008, he successfully achieved Diplomate status in the American College of Veterinary Preventive Medicine (DACVPM). In 2010, he completed the US Army Laboratory Animal Medicine Residency program at the US Army Medical Research Institute of Infectious Disease in Frederick Maryland. In 2011, he successfully reached Diplomate status in the American College of Laboratory Animal Medicine (DACLAM). Dr. Chappell has 8 years of experience serving in various capacities of providing medical care and welfare for animals used in a research setting. His expertise lies in bio-containment and radiation with experience in all areas of animal welfare protection including serving as the attending veterinarian for a major military research facility, member of multiple IACUCs, preparing for and participating in AAALAC International site visits, as well as providing animal medical and surgical care to numerous species of exotic animals including nonhuman primates, rabbits, guinea pigs, hamsters, ferrets and various other species.
Nancy Keller | DVM
Nancy J. Petro Keller, DVM received her Degree in Veterinary Medicine from the Ohio State University, College of Veterinary Medicine, in 1993. After graduation, she proceeded into the professional practice of veterinary medicine which included a multitude of different mammalian species such as dogs, cats, horses, cattle, sheep, goats, swine, ostriches, emus, and pocket pets in rural Ohio. She married a fellow veterinarian from Ohio who was in service of the U.S. Army Veterinary Corps and travelled the world broadening her practice experience to include novel animal species such as marine mammals (dolphins and seal lions) and non-human primates. Additionally, she is a highly skilled veterinary surgeon applying those skills to advancing diagnostic and therapeutic interventions against the world’s most deadly infectious diseases at USAMRIID, Ft Detrick. She is a Diplomat of the American College of Veterinary Reality (DACVR) with over 23 years of advanced private practice experience. Her special interests are orthopedic and soft tissue surgery, and equine and canine reproduction. She is actively involved with her children, horses, and managing the menagerie of animals at home.
Scott Willens | DVM, PhD, DACVPM
Dr. Willens received his BS in Animal Science from Rutgers University in 1992, DVM from University of Minnesota in 1996 with externships at the Minnesota Zoo and Gabbert Raptor Center, veterinary internship in Aquatic Animal Medicine and Research from Mystic Aquarium in 1999, and PhD in Comparative Biomedical Sciences (Pharmacology) from North Carolina State University in 2005. Immediately after the events of September 11, 2001, Dr. Willens joined the Army Veterinary Corps, and he currently serves on active duty in the rank of Major. He voluntarily deployed to Iraq in 2007 on an embedded provincial reconstruction team to assist agricultural communities in Babil Province and veterinarians at the Baghdad Zoo. In 2013, Dr. Willens became a Diplomate of the American College of Veterinary Preventive Medicine (ACVPM), and he is a member of the American Veterinary Medical Association (AVMA), the American Association of Zoo Veterinarians (AAZV), and the International Association for Aquatic Animal Medicine (IAAAM). His expertise includes avian/exotic/aquatic animal medicine and surgery, pharmacology, toxicology, and preventive medicine and public health. In his “down time”, Dr. Willens is lead singer for the rock cover band, Til September, and instructs and practices taekwondo with his son, Matthew, as second degree black belts. His dancer and violinist daughter, Emily, also works at NVA.
Kristine M. Wilson | DVM
Dr. Wilson is first, last, and always an advocate for animals. Born and raised in Maryland, educated in Maryland and Georgia where she pursued her interests and earned degrees in Animal Science; Bachelors and Masters Degrees in Animal Science, University of Maryland and Doctor of Veterinary Medicine, University of Georgia, 1982. Her dedication encouraged her rewarding journey caring for animals at the Greenville Humane Society, which she managed in South Carolina as well as her engagement in veterinary practices in Brunswick, MD, and Jefferson, MD, Where for nine years she cared for both large and small animals. In 1991 Dr. Wilson established Prospect Veterinary Clinic, a veterinary hospital focused on the health and care of dogs, cats, and pocket pets. She she continues to work there part time. Dr. Wilson resides with her husband in Leesburg, VA. She has been the guardian of countless animals, horses (Moonshadow), dogs (Bo, Lucy, Tinker +3), cats (April, Melody, Powder +9), to name a few. When not "in clinic" she enjoys running, swimming, cycling, photography and the occasional nap.