WHO WE ARE
River Valley Veterinary Services is a veterinary practice in the Mohawk Valley. Founded in 2018 by Dr. Jill Greisman and Dr. Jessie Bolster, River Valley strives to provide the highest level of care to any animal you may have on the farm. We have an enthusiastic and caring team ready to respond to the growing needs of our community and their farm animals. Our professional team of experts are on duty 24 hours a day, seven days a week to serve the diverse needs of our clients. Contact us today to set up an appointment for your animals.
Jill Greisman, DVM, cVMA
Veterinarian / Owner
Dr. Jill brings a wealth of knowledge, clinical insight, and a practical, solution-focused approach to ambulatory medicine. A graduate of Cornell University, where she completed both her undergraduate and veterinary degrees, she is happy to treat any animal on the farm. Dr. Jill is certified in acupuncture and manual manipulation, offering integrative treatment options tailored to each animal’s needs. She takes a proactive approach to animal health, emphasizing preventative care and strategic environmental design to support healthier, more resilient herds and flocks. ​
Dr. Jill lives on a farm with her husband and kids. When she’s not in the field, she enjoys riding her horses and spending time outdoors with her family.
Dr. Jacob Bunker
Associate Veterinarian
Dr. Jacob Bunker is originally from the Town of Florida, NY. He earned his bachelor's degree in Animal Science from SUNY Cobleskill, where he was captain of the Men's Soccer Team. He went to veterinary school at Colorado State University. While there he managed beagles for research projects and worked in the Livestock Animal Hospital on cows, goats, sheep, pigs, and camelids. His favorite veterinary interests are dairy production medicine and equine reproduction.
When he's not working, he enjoys playing soccer, playing with his corgi, Moose (named because of his big ears), and gardening.
Dr. Mary Q Kauffman
Associate Veterinarian
Dr. Mary Kauffman is originally from Marblehead, Massachusetts. She earned her bachelor's degree in biology and technical theater from Sarah Lawrence College, where she also ran cross country. After some pit stops working at a wolf sanctuary in New Mexico, a dairy farm in western Massachusetts, and a small animal hospital in Burlington, Vermont, she completed her veterinary degree at the Atlantic Veterinary College at the University of Prince Edward Island in Canada.
Dr. Mary has many vet-med interests including grazing dairy, small ruminant husbandry, and a love of draft horses.
When she's not working, Dr. Mary enjoys sports of all kinds, including BJJ, kickboxing, MMA, snowboarding, and running or hiking with her partner and dog, Toaster!
Dr. Sam Benham
Associate Veterinarian
Dr. Sam Benham is originally from New Hartford, Connecticut. She obtained her Bachelor's degree in Animal Science (with minors in Chemistry and Molecular/Cell biology) from the University of Connecticut in 2020 and went on to earn her Veterinary degree from the Atlantic Veterinary College in Prince Edward Island, Canada in 2024. Following graduation, Dr. Sam completed a one year rotating internship in Large Animal Medicine, Surgery and Theriogenology, also at the AVC before moving back to the United States to join River Valley. Dr. Sam has a passion for caring for a wide variety of species and promoting preventative care.
Outside of Veterinary medicine, Dr. Sam enjoys many sports including jiu-jitsu/MMA, rock climbing, running and hiking as well as drawing and painting and spending time with her partner and her two cats, Razzle and Dazzle.
Charly Youngs
Client Care Specialist
Charly graduated from Saint Rose with a Masters in Elementary Education and is certified in NYS to teach grades 1-6. After working in Cobleskill Richmondville Central School District for over 10 years, Charly left to be a stay at home mom to her son, Easton. When she’s not working with us or taking care of Easton, she’s running her small horse boarding facility.
Charly has many animals including chickens, dogs, cats, horses, and fish! In her downtime she likes to read, run (for miles and miles!), and barrel race with her currently 1D horse, Possum, or hang out with her baby horse Joey.
Nicole Mulhall
Client Care Specialist
Nicole is our multitasker extraordinaire. She loves being able to serve the animal-loving community while working from home and being able to spend more time with her wife and kids. Nicole graduated with an associates degree in business, home-schooled her four children for a decade, and was a customer success representative for a start up company.
When she's not working, Nicole enjoys family time which is usually spent hiking, fishing, camping and being outdoors.
Courtney Demarco
Client Care Specialist & Veterinary Assistant
Courtney has experience in both veterinary medicine and dentistry. She spent many years working as a small animal veterinary assistant before transitioning into the dental field, where she expanded her skills in patient care and clinical support. After several fulfilling years in dentistry, Courtney chose to focus on her family and spend time at home with her son.
Courtney has many animals including a cat, dogs, chickens, ducks, and a horse! When she isn't working with RVVS, she enjoys gardening, riding her horse Superman and spending time with family.
Becky Burroughs
Veterinary Assistant
Becky studied Animal Sciences at The University of Massachusetts Amherst and keeps our doctors well-stocked and on task at appointments and behind the scenes. Becky rode for the UMass Western Equestrian Team and has her own horses on her family's farm.
Becky loves all animals and is gaining as much experience from our doctors as possible to attend veterinary school in the future. When she's not with RVVS, she is working at a small animal hospital and enjoying her dogs, horses, chickens, and nephews at her home farm.
Allie Bellair
Veterinary Assistant
Allie graduated from Union College with a degree in Chinese language and a minor in Mathematics. Shortly after graduating, she went back to school to finish up her pre-requisite courses to apply to veterinary school. Although newer to large animal medicine, Allie has quite a bit of experience working with small animals. When she isn't answering phones or working at a dairy barn, she loves to ride along with our vets as this is what she hopes to do one day! In her spare time, Allie loves baking and playing with her kittens, Nami and Luffy.