Samuel Martinez, DVM, Owner/Veterinarian
University of Maryland
2001
Undergraduate Degree, Animal Science
St. George’s University School of Veterinary Medicine
2009
DVM
Dr. Martinez previously worked for Ashburn Village Animal Hospital in Ashburn, Va, Banfield Pet Hospital in Alexandria, VA. He has a special interest in internal medicine and soft tissue surgery. Samuel was born in Nicaraugua and is the father of four teenagers. He has two dogs (Junior & Dumpling) and a cat named John. He enjoys spending time with his kids, running, target shooting, fishing, & cooking for family and friends.
Our Clinic Staff
Virginia Sappington, Veterinary Practice Consultant
Marymount University
1994
Undergraduate Degree, B.A.
Virginia was born in Alexandria. She is the proud mother of four young adults. Her previous companion animal work experience was as owner/operator of a successful pet-sitting business in Falls Church, VA. She transitioned from that into the veterinary industry in 2016 and spent the next 8 years developing and managing a veterinary practice. Along with practice development she provides financial analysis & reporting, bookkeeping and tax preparation services. In 2025 she will transitioning to veterinary practice consulting. She enjoys a quiet life in the mountains biking, hiking, skiing, and enjoying nature with her dog, Fiona.
Stacey Shurtliff, Licensed Veterinary Technician
NVCC, Summa Cum Laude
Associate of Applied Science, Veterinary Technology
Stacey came to us after working over a decade in a surgery specialty practice. She has worked for 19 years in small animal medicine and emergency. Stacey is the proud owner of 3 beautiful white cats. She’s knowledgeable, reliable, and compassionate. Stacey enjoys volunteering at her local church and rooting for the Nationals, go Nats!
Barbara Villegas, Practice Manager
Barbara Villegas has been promoted from Assistant Practice Manager to Practice Manager. She comes into this position after much training, many years of experience (at our clinic), and a passion for what she does. Barbara embodies all that sets our clinic apart in this industry and makes our team so special. She is a local in Manassas City. She speaks Spanish fluently because she is originally from Mexico, but the majority of her life has been here in Manassas. She graduated from Osbourn High School with a special interest in mathematics and technology. She loves being around animals, big and small. Barbara loves helping others and caring for the animals. She enjoys listening to music and taking walks through the park during her free time.
Rachael Nelson, Supervisor
Rachael was born and raised in West Virginia and moved to Manassas in June 2021. Her journey in veterinary medicine began in 2012, predominantly working as a veterinary technician before transitioning into the role of a CSR. Animal welfare is extremely important to Rachael, and she is grateful to serve this community.
In her free time, Rachael enjoys spending time with her boyfriend Eric and her cat, Grapes. She’s a big fan of Jirani Cafe and loves a warm cup of coffee, cloudy skies, and a good book.
Regina Martinez, Veterinary Assistant & Representative
Regina was born in Washington, DC but lived most of her life in Virginia. She is currently a full-time, 3rd-year veterinary student at the Carlson College of Veterinary Medicine, at Oregon State University. She is her class president and class representative for the National Veterinary Association. She has a special interest in reptiles, cattle, sheep, and companion animal surgery. On her breaks from school, she works at the clinic. She enjoys knitting, watercolor painting, skiing, and hiking. She adores her hog-nosed snake, Tomato.
Amanda Myers, Customer Service Representative
Amanda has worked in the vet industry (customer service) for 11 years. She loves being around all animals and has lived in Virginia most of her life. She has 3 cats (Boogie, Panda, and Izzy) and spoils them rotten. In her spare time, she loves to fish, camp, cook and do crafts, but her favorite thing is to spend time with family and friends.
Lizbeth Gutierrez-Rivas, Veterinary Assistant
Lizbeth is currently a first-year college student with a 2-year plan to transfer to George Mason. Her goal is to become a certified veterinary technician. During her free time, she enjoys reading, painting & spending time with her family.
Danielle “DT” Tenney, Assistant/Technician
Danielle (mostly known as DT) went to Penn Foster to complete Associates in Science degree to become a Veterinary Technician. She has been in the animal field since she was 19 starting as a kennel assistant and working her way up. She has lived on an alpaca farm since she was 9. When she is not working helping pets or working on the farm you will find her at Crossfit or Planet Fitness working out or at home reading a good book and spending time with her family.
