Our Veterinarians

Dr. Gwen Sherman

Dr. Gwen Sherman

Medical Director

Dr. Gwen Sherman has been with Mt. Kisco Veterinary Clinic since 2004, and she has developed many long-term relationships with her devoted clientele. At a young age, she recognized a passion for working with animals after spending time caring for wildlife, riding horses, and living with many pets. She graduated from Auburn University in 1990 and completed multiple rotating internships. Dr. Sherman’s greatest accomplishment is molding our practice into a modern, cutting-edge clinic while maintaining a warm and compassionate atmosphere for clients and their pets. Dr. Sherman’s special interests include surgery (particularly laser procedures) and oncology. She lives in North Salem with her family and pets including Levi, Cavalier King Charles Spaniel, and cats Willow and Maisy. When she isn’t working, Dr. Sherman enjoys fast cars, travel, spending time at the beach, and horseback riding.
Dr. Jonathan Olsen

Dr. Jonathan Olsen


Dr. Jon Olsen is a Cornell University graduate who joined our team in 2009 after a year-long medical and surgical internship at Red Bank Veterinary Hospital. His areas of interest include radiology, gastroenterology, dentistry, abdominal ultrasound (he regularly performs ultrasound evaluations at our practice) and nutrition. Dr. Olsen completed special training to become a USDA accredited veterinarian. This means that he is able to prepare and complete international travel certificates for our patients. He enjoys attending regional and national conferences and monthly radiology meetings to keep abreast of developments in his field. Fun fact: He was named one of the 2010 Top Male Executives by the Westchester County Business Journal. Dr. Olsen lives in Thornwood with his wife, Amy, and their pets Slugger, a Miniature Poodle, and cats Sonny and Chandler. He enjoys cooking for his family, sipping single malt Scotch, and creating and solving crossword puzzles in his free time.
Dr. Lori Gil

Dr. Lori Gil


Dr. Gil began at Mount Kisco Vet in February 2018. She graduated from the University of California Davis and is a member of the WRVMA and AVMA organizations. She is proud to be Fear Free certified and has a special interest in feline medicine and dentistry.

Dr. Gil has always known that she wanted to help animals. Her youngest memories of this are when she was 6 or 7 years old after seeing a dog be hit by a car and wanting to do anything she could to help animals. Her favorite part of working as a veterinarian is developing relationships with our amazing clients and patients and helping restore sick pets’ health to see how happy that makes their owners and our staff!

At home, Dr. Gil has two cats that she has had since they were five months old, Lexi, a Catahoula/Pit mix, and Grady, a Catahoula rescue from Louisiana. Outside of work, she enjoys hiking and spending time outdoors with her dogs. She also enjoys reading and has taught herself how to knit and crochet!

Dr. Gil’s first language was actually Russian because she lived there from age 2 through 10.

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Thank you for choosing Mount Kisco Veterinary Clinic. We’ll be there when you need us!


474 Lexington Avenue
Mount Kisco, NY 10549
Click here for directions.


Mon-Fri:   8am-7pm
Sat:   8am-1:30pm
Sun: Closed

Contact Us

Phone: 914-241-3337
Fax: 914-241-6299
Email: vcamountkisco@vca.com

We’re here for your pet.

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