Dr. Alan S. Hans, Veterinarian, Owner

Originally from Queens, New York, Dr. Alan Hans founded Woodstock Animal Hospital in 1981. Dr. Hans did his undergraduate studies at SUNY Buffalo and Columbia University which led to veterinary studies at The University of Liege in Brussels, followed by internships at The Animal Medical Center in NYC and Cornell University in Ithaca, New York. When Dr. Hans leaves the practice at night, he goes home to his three labs, Ben, Annie, Charlie, and his cat Ella.



Dr. Amy Adams, Veterinarian

Dr. Adams grew up on Long Island and earned her Bachelors Degree from Cornell University.  After graduating from law school at The American University in Washington, DC, she practiced law for four years at a small firm in Manhattan.  The pull of becoming a vet and travelling abroad led Dr. Adams to veterinary school at Murdoch University in Australia.  After graduating veterinary school in 2009, Dr. Adams returned to the United States where she practices Small Animal medicine.  On weekends, she spends time with her husband, daughter, dog, cat, and fish!


Kim Chase, Practice Manager

Kim is a Woodstock native that has worked at the Woodstock Animal Hospital since December of 1988, and is the practice manager. She is a graduate of Onteora High School and Ulster County Community College. Kim and her husband Tom have two adult children, Kate and Cody. Kim also has 2 great danes, Roxy and Jack, a mastiff mix, Cooper, 1 very large percheron horse, Goose (he came named), a goat named Libby, a flock of chickens and guinea hens.


Jennifer Van Steenburg, Client Care

Jenn was born in Catskill, NY and grew up in Saugerties, NY. She joined the Woodstock Animal Hospital in 2010 as a client care specialist and vet assistant. Jenn is a graduate of Saugerties High School, then attended CGCC and The Gulf Coast College in Mississppi. She enjoys photography, baseball, and scrap booking. Jenn is accompanied by her husband Nick and their very handsome sons, Aiden, Liam and Riley.


Kathleen Jackson, Veterinary Technician

Kathy is a native to Columbia County, New York. She has an associates degree from Columbia Greene CC and also has taken Vet Tech classes from St Petersburg Junior College online in Florida. She has worked in veterinary hospitals since 1985. Kathy has been with our practice since August 2011. She resides in Phoenicia, New York with her husband and son, a Jack Russel Terrier, and 2 cats.


Breana Wynkoop, Veterinary Technician

Breana graduated from SUNY Ulster’s veterinary technician program and became a licensed vet tech in January 2012. Breana was raised on a farm and current owns horses, cows, goats, chickens, ducks, and rabbits, in addition to her dogs and cats. In her spare time, she love riding horses, hiking, hunting, fishing, kayaking, and many other outdoor activities.


Emile Menasche, Client Care

Emile lives in the Catskills with his dogs, Jeter and Munson, and cats, Laverne and Shirley. In his free time, he enjoys skiing and watching sports. He provides a friendly experience to clients and pets alike!


Stephanie Nardi-Cyrus, Veterinary Technician

Stephanie is a Licensed Veterinary Technician who graduated from SUNY Ulster. She has worked with many species of animals but has a soft spot for our furry companions and the hospital setting. Outside of work, you can find Stephanie reading a book, practicing yoga, or cozied up with a vegan dessert. She shares her home with her wonderful husband, Nate, and her two rescue mutts, Bear and Salem.



Crystal Zwissler, Kennel Attendant


Crystal grew up on Whaley Lake in Dutchess County before moving to Ulster County when she graduated high school in 2015. She has a huge passion for animals and has four fur babies whom she loves very much. Their names are Comet (a husky), Rocky (a rottweiler), Romero and Jasper (both domestic shorthair cats.) She is the daughter of Stephanie and David, sister of Daniel and Robert, stepdaughter of Patrick, and stepsister of seven. She joined the animal hospital in 2017 and loves being a part of this team. She hopes to someday run a rescue and help as many animals in need as she possibly can.


Stephanie Zwissler, Kennel Attendant

Stephanie was born and raised in Dutchess County and moved to Ulster County in 2015 with her daughter, Crystal (also our employee!!) She lives with her boyfriend, Patrick. Stephanie is the mother of three, stepmother of seven, and grandmother of Christina. In addition, she is the fur mother of Comet (a husky) and two cats, Romero and Jasper. She earned a degree in Childcare and has an Associate Degree in Liberal Arts and Science from Dutchess Community College. Stephanie enjoys camping, gardening, and reading. She joined the animal hospital in 2019.