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 horsey.jpg



If you’re looking for intelligence and quick thinking, then let Jill Greisman manage your animal's health care. There isn't an animal on the farm that Dr. Jill won't treat, be it horse, cow, pig, or turkey Dr. Jill will sort out a solution quickly and efficiently. She is certified in acupuncture/manual manipulation and enjoys advising people on the best way to manage their farm health. When she isn't treating other people's animals she's riding one of her horses in summer shows.



Associate Veterinarian

Dr. Rheanna Foley is excited to be back in New York State. Dr. Rheanna is no stranger to hard work and will happily tackle (or treat) any issues with enthusiasm. She studied Animal and Dairy Science at Cornell University prior to attending veterinary school at Mississippi State University. After graduating from vet school in 2019, she worked in Virginia for over a year caring for a wide variety of farm animals and family pets.


Originally from Tyler County, WV, she and her two older brothers grew up together and could often be found out rambling the farm with the family dogs. Early on, she was an active member of her high school FFA chapter, participating in many career development events and raising hogs for the chapter’s annual Ham & Bacon Sale.


Now, in her spare time, Dr. Rheanna enjoys hiking, gardening, baking, and training her dog, Mia, to do cool tricks. Be sure to let her know the best places to go hiking and best places to grab coffee or lunch!



Associate Veterinarian

Say hi and welcome to Dr. Alex! You may recognize her from one of the times she has worked with us in the past 3 years.

Dr. Alex Fitton, the newest member of the RVVS team, is excited to serve any animal on your farm! A Hudson Valley native, she’s thrilled to be back in upstate New York after finishing her Doctorate of Veterinary Medicine and Bachelor’s of Animal Science at North Carolina State University. She worked previously at Advanced Animal Diagnostics, a company which develops diagnostic technology specifically for food animals, and as a clinical pathology laboratory technician. Dr. Alex has a background and interest in working with many animal species including: equine sports medicine, dairy cattle pharmacology research, and backyard poultry flock health.

In her spare time, Dr. Alex enjoys horseback riding with her off-the-track-Thoroughbred (Marshall), hiking with her dogs (Rue and Rogue), gardening with her house chicken (Margie), and breeding Belgian d’Anver bantam chickens.

IMG_5826 (5).JPG


Associate Veterinarian

Dr. Gabrielle Wimmer is originally from Oneida, NY. She earned her bachelor's degree in Biology from Houghton College, where she also studied Outdoor Recreation and Equine Science. Throughout Veterinary School at Cornell, she worked at the Equine and Farm Animal Hospital and the Teaching Dairy as a student milker, breeder, and member of the calf care team. Dr. Gabby has many vet-med interests including calf care and small ruminant husbandry.

When she's not working, Dr. Gabby enjoys reading, hiking with her husband, and hanging out with her cats, Merry and Pippin.

Mary Kate photo.jpg


Associate Veterinarian

Dr. Mary Kate Metch grew up and went to college in Virginia. She worked in small animal clinics before attending veterinary school at the University of Pennsylvania. Dr. Mary Kate quickly became interested in large animal medicine in vet school, particularly food animal medicine. Some other areas of interest include small ruminant parasite management and dairy production medicine, especially transition cow and calf management. Her favorite farm animals are goats, but also enjoys working with camelids!

We're lucky she got hooked on large animals and ambulatory medicine and relocated to New York with her husband and son. In her free time, Dr. Mary Kate & her family enjoy hiking, gardening, working on home renovations, and snowboarding.



Client Care Specialist

After graduating from Cornell University in 2014 with a degree in Animal Science Emily became an assistant manager at a 1200 cow dairy farm. From that farm, she transitioned to managing a 500 cow dairy. Now a full time mom to 3 energetic kiddos ages 3.5, 2 and 6 months, she gets to spend her "free time" on raising her own animals including a small number of beef cows, honey bees, and meat/laying chickens. Emily answers phones and responds to emails for RVVS and is an integral part of our team. When she can, she'll jump in the truck to meet clients face to face!



Client Care Specialist

Gianna DeLilli joined the RVVS team in February 2020 after leaving a longtime position at Mohawk Harvest Co-op in Gloversville. She’s excited to help local veterinarians and shares a passion for helping animals and for community involvement. She volunteers at the Fulton County Regional SPCA, serves on the Board of Directors for the Glove Theatre, the Mohawk Harvest Co-op, and the Gloversville Neighborhood Improvement. Gianna received a Batchelor of Science degree in Environmental Science from the State University of New York at Oneonta in 2014 and has enjoyed a transition to working from home and spending time with her other passions like gardening, cooking, caring for her own animals, and expanding her homestead. Gianna assists us on Spay Day so make sure to say Hello!



Veterinary Assistant / Client Care Specialist

Allie Bellair is one of the newest additions to the team and couldn’t be more excited to help out. She graduated from Union College in 2020 with a degree in Chinese language and minor in Mathematics. She is currently finishing up her pre-requisite courses through UVM’s post-baccalaureate premedical program so that she can apply to veterinary school in the next couple of years. Although new to large animal medicine, Allie has quite a bit of experience working with small animals. When she isn’t answering the phones, she is usually riding along with one of the doctors to learn anything she can about large animal medicine as this is what she hopes to do one day!



Client Care Specialist

You may have already spoken to her on the phones but here’s an official introduction : 

Charly is our newest addition to the RVVS Team! She 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 relax with her retired horse, Fritz.