We are extremely proud of our dedicated team. We hire only the best and most experienced employees to become a part of our team here at Aquia-Garrisonville Animal Hospital. Our team is filled with highly dedicated animal lovers who are well trained at their jobs. They will do anything possible for their patients and the owners who love them.

Learning and education are very important here at Aquia-Garrisonville Animal Hospital. We strive to have a state of the art hospital with a staff trained in the latest medical advances. Our patients deserve the very best veterinary care.

Basically, our team is full of animal lovers. They make it a goal to treat each patient like their own. They give each patient plenty of love and attention. They are prepared to discuss preventative medicine so that every pet can stay as healthy as possible. They will also do everything that they can to make a sick pet feel better as soon as possible.

If you would like to speak to someone on our team, don’t hesitate to contact us today at (540) 659-8140.


Dr. Gretchen Guth

Dr. Guth graduated from Kansas State University in 1998 (go Cats!) and came straight here to AGAH. After working as an associate for 13 years, she bought the practice with Troy Snuffer in May 2010. She has interests in exotics, dentistry, and oncology. Her ultimate vision is to make AGAH THE state-of-the-art facitility in Stafford County.

She shares her home with 3 cats: Cahoots, Pooka, and Feanor (Nori), a lab mix: Haylee and two Jack Russells: Paige Angel and Beren.

Dr. Trisha Metzger

Dr. Trisha Metzger graduated from the University of Wisconsin – Madison School of Veterinary Medicine in 2002. She practiced for one year at a mixed animal veterinary practice in Wisconsin before venturing east to Virginia. After nearly two years of practice in southern VA, she eventually settled here in Stafford and joined the practice of AGAH in 2005. Her commitment to the mission and vision of this practice have kept her here ever since.

Despite its many challenges, Dr. Metzger truly loves being a veterinarian and is thankful she can make her life’s passion her career. She has a particular interest in emergency medicine, feline medicine (she is a member of the AAFP -American Association of Feline Practitioners), dentistry, dermatology and ear disease, and endocrinology. She is often found working our urgent care shift but does see regular daytime appointments as well. Dr. Metzger also enjoys seeing small mammal and marsupial cases and has a minor obsession with guinea pigs.

In her personal time Dr. Metzger enjoys gardening and assorted home improvement projects, kayaking, crafts, hiking, cooking, and spending time with friends. Whenever possible she loves to return to the frozen tundra of Wisconsin to visit family and remember what real snow and winter look like.

Her furry family members include three feline friends: Reggie, Sherwin Williams, and Reuben. She also is a slave to four guinea pig friends: Cinnamon, Nutmeg, Chili, and Pepper. Someday she will fulfill her dream of having a pair of Greyhounds (but her current feline family members will not allow it).

Dr. Peggy Minnich

Dr. Minnich graduated Magna Cum Laude from Texas A&M with a degree in Animal Science in 1983, then graduated from Texas A&M Veterinary School in 1987.

Before moving to Virginia, she worked in an animal emergency clinic in Houston and participated in eventing.

She has practiced small animal medicine in Virginia since 1987, having joined AGAH in 1994. She enjoys surgery, ophthalmology, endocrinology and teaching puppies and helping owners.

She and her husband have a daughter in Virginia Tech and one at Christopher Newport.

She has competed in dressage successfully to FEI levels placing in top 10 at Devon in PSG.

She has numerous pets – the current menagerie includes a black lab, a Siamese, a 3-legged cat, and a Hanoverian mare and foal.

Dr. Tod Vincent-Johnson

Dr. Vincent-Johnson graduated from the University of Minnesota College of Veterinary Medicine in 1987. After being in a 99% dairy cow practice in Wisconsin for one year, he married his friend and classmate, Nancy, and followed her as she pursued a career in the U.S. Army. As they moved around the globe, he practiced veterinary medicine in diverse locations from Montana to Germany, finally settling in Virginia in 2002 where he joined the staff at Aquia-Garrisonville Animal Hospital.

Dr. Vincent-Johnson truly enjoys veterinary medicine. Knowing that the clinic is an intimidating place for pets, it is his goal to make every patient as comfortable as possible. He strives to thoroughly explain your pet’s medical condition and treatment options and make you a team member in your pet’s health care. Although he enjoys all aspects of veterinary medicine, his special interests include diagnostic ultrasonography, wound management, and soft tissue surgery.

The Vincent-Johnsons have one daughter who is in college and an assortment of pets which include birds, cats, dogs and horses. Dr. Vincent-Johnson enjoys canoeing, skiing, biking, hiking, horse camping, and leisurely trail rides in the mountains. He enjoys sharing his love of music by playing percussion with the contemporary music worship services at Church.

Dr. Jody Stiefel Grzybowski

Dr. Stiefel-Grzybowski grew up as an army brat and traveled all over the country with her family. She settled in MA and graduated Summa Cum Laude in 2001 with a BS in Environmental Biology at Westfield State College. She then followed her family to VA and worked as a veterinary assistant at AGAH while attending Virginia-Maryland Regional College of Veterinary Medicine. Graduating in 2006, she came back to AGAH to work as an associate veterinarian, where she has been working since. In addition to her education in western medicine, she is certified in veterinary acupuncture and trained for veterinary tui-na (massage/chiropractics) by the Chi Institute of Traditional Chinese Veterinary Medicine in Florida. She believes the best medicine is obtained by integrating traditional chinese medicine with western medicine. Other areas of her interest include neurology, ophthalmology, surgery and ultrasonography. She thoroughly enjoys her clients and spending time getting to know them and educating them on their pets specific health concerns.

While not taking care of your pets, she takes care of her darling husband and two lovable children which includes using them as her guinea-pigs while experimenting with recipes in the kitchen. She loves spending time with her family, working out, doing anything outdoors, music and baking. She has two rambunctious dogs, Tripper and Vera, and two kitties, Eleanore and Rigby.

Dr. Simeon Taft

Dr. Taft earned his V.M.D. from the University of Pennsylvania School of Veterinary Medicine, where he was a small animal and large animal major. He furthered his interests in ophthalmology, small animal internal medicine, and equine medicine & surgery via externships at the University of Wisconsin-Madison. He also spent a summer in Wisconsin under the tutelage of the official veterinarian of the World Dairy Expo, Dr. Rick Halvorson.

Dr. Taft is a member of the American Veterinary Medical Association and a certified member of Penn H.I.P., the Hip Improvement Program developed at the University of Pennsylvania for the assessment of hip dysplasia in dogs and cats.

Immediately before veterinary medical school, Dr. Taft was an animal keeper in the Elephant House at the Smithsonian National Zoological Park in Washington, D.C. In addition, for several years, he was a volunteer at the Animal Welfare League of Alexandria, Va.

After he earned his B.A. in Economics from the University of Virginia, Dr. Taft worked at the Board of Governors of the Federal Reserve System in Washington, D.C. While at the Fed, he studied graduate-level economics at Johns Hopkins University.

Dr. Jaqueline Kennedy

She’s back! Dr. Kennedy was at Aquia-Garrisonville a number of years ago until she moved away. Recently she has moved back, and we are so happy to welcome her back!

Dr. Joanne Rue

Dr. Rue graduated in 2012 from University of Georgia and we are so happy to have her here!

Dr. Hanenburg

Dr. Hanenburg graduated from Purdue University College of Veterinary Medicine in 2016 before joining AGAH the same year. Before veterinary school, Dr. Hanenburg volunteered as a mentor for therapeutic horseback riding programs and worked in the Oncology Department of Purdue University Veterinary Teaching Hospital. She tracked small animal medicine during her clinical year as a veterinary student and completed an externship at an emergency veterinary hospital in Virginia. She enjoys all aspects of medicine, but has special interests in ophthalmology, wound management, and diagnostic imaging.

After living in Indiana for 20 years, Dr. Hanenburg decided to settle in Virginia where she can be closer to family. When she is not in the hospital taking care of your pets, she enjoys cooking, drawing, playing tennis, and spending time with her Cairn Terrier, Snickers.

Dr. Ansel

Dr. Laura Ward Ansel is originally from south Louisiana where she grew up riding and showing hunters and participating in competitive obedience with her two dogs, a dachshund and an English Springer Spaniel. She graduated Summa Cum Laude with a B.S. in Dairy Science from Louisiana State University and attended LSU College of Veterinary Medicine, graduating in 2008. She is a member of the American Veterinary Medicine Association and the American Veterinary Society of Animal Behavior.

Dr. Ansel is married to an active duty Marine and has had the opportunity to practice different aspects of veterinary medicine in 4 different states. Dr. Ansel joined AGAH in 2011, moved away in 2013, and has returned part time in 2017. She loves sharing her knowledge with owners and has special interests in ophthalmology, preventive care, and behavior, both treating patients with behavioral challenges and preventing these issues with training and enrichment.

Dr. Ansel shares her life with her husband and son, 3 rescued dogs, Rodi, Finn, and Hazel, and 3 stowaway green anoles. She enjoys cooking and gardening, and loves training and competing her dogs in agility, Nosework, and parkour.

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