Meet the Veterinary Team at Companion Care Veterinary Hospital
From our veterinarians to our client care staff, every team member shares a commitment to compassionate, personalized care for dogs and cats. Get to know the friendly faces who make our hospital feel like home — for you and your pet.
Meet Our Veterinarians in Mechanicsville
At Companion Care Veterinary Hospital, our team isn’t just passionate about pets — we’re part of the local community. Most of us live right here in St. Mary’s County, and we’re proud to serve the neighbors and animals we’ve grown up alongside.
Meet Our Mechanicsville Veterinary Team

Dr. Melanie Donis, DVM
Veterinarian
Born in Cheverly, Maryland, and raised in Orlando, Florida, Dr. Donis has always had a deep-rooted love for animals. From rescuing stray dogs and cats to caring for orphaned wildlife — including once bringing home a screech owl — her passion for veterinary medicine began early. Before entering veterinary school, she volunteered at the Audubon Society’s Birds of Prey Center in Maitland, Florida, gaining hands-on experience with avian patients.
Dr. Donis earned her undergraduate degree from the University of Florida and graduated from veterinary school in 1997. She completed a one-year rotating internship in medicine and surgery at South Shore Animal Hospital in South Weymouth, Massachusetts. After relocating to Southern Maryland, she spent 11 years at St. Mary’s Veterinary Hospital before co-founding Companion Care Veterinary Hospital.
Her professional interests include breed-specific medicine, especially greyhounds and brachycephalic breeds like French Bulldogs. As the proud owner of six Frenchies, Dr. Donis is active in AKC conformation shows and is an OFA-certified Respiratory Function Grading Scheme (RFGS) evaluator.
Outside of work, she enjoys traveling to dog shows, trail riding with her horses, and spending weekends with her husband and two adult children.

Dr. Brittany Gilbert, DVM
Veterinarian
Dr. Gilbert joined Companion Care in 2017. A lifelong local, she grew up in St. Mary’s County and graduated from Chopticon High School in 2009. She earned dual Bachelor of Science degrees in Dairy Sciences and Animal & Poultry Sciences from Virginia Tech in 2013 and received her Doctor of Veterinary Medicine degree from the Virginia Maryland College of Veterinary Medicine in 2017.
She has always wanted to be a veterinarian. On weekends, Dr. Gilbert enjoys spending time with her family, playing disc golf, reading, and watching Hokie sports. She lives with her husband, Russell, and their rescue dog, Leia.

Dr. Masako Spruill, DVM
Veterinarian
Dr. Spruill earned her DVM degree from Virginia-Maryland College of Veterinary Medicine in 2006. She worked in several hospitals around the DC area before joining Companion Care in 2014.
Her professional focus includes feline medicine, geriatric care, and client education. She holds a Cat Friendly Veterinarian certificate and is a proud Cat Advocate. Dr. Spruill lives with her husband and their three cats — Thor, Mocha, and Yoshi. In her spare time, she enjoys jogging, hiking, gardening, cooking, and music.