Mattapoisett Animal Hospital

91 County Road
Mattapoisett, MA 02739


Our Doctors



Dr. Jill P. O'Brien, DVM:

Dr. O'Brien received her DVM from the Tufts University School of Veterinary Medicine in 1991. Jill enjoys practicing small and exotic animal medicine, with substantial experience treating birds, reptiles, rodents, and the occasional marsupial. She is also well versed in veterinary acupuncture. Jill's family includes her three lovely children... as well as 4 dogs, 7 cats, 1 horse, 2 goats, 8 chickens, 2 birds, 1 snake, and 2 mice!

 Dr. William S. Hall

Dr. Hall received his DVM from Tufts University Cummings School of Veterinary Medicine in 2013. Will has special interest in dentistry, surgery, and dermatology. He takes pride in serving his community through small animal medicine. He has been with our hospital since 2016, and his personality and skills have made him a new favorite of our doctors, staff members, and clients. Will lives on Ned's Point and raises his two young sons Billy and Charlie with his incredible wife Megan. He enjoys wind surfing, working in the woods (ask him about his chainsaw!), and spending time with his family. He has a Labrador Retriever named Jenny which he will always refer to as "Daddy's Girl". 


Dr. Willard J. Gould

Dr. Gould is a graduate of Phillips Academy and Denison University. He received his DVM from the Cornell University College of Veterinary Medicine in 1976. Afterwards, he completed a rotating internship and a two year medical residency. He then became a board-certified small animal internal medicine specialist during the two years he spent working at the Animal Medical Center in New York City. Following several years working in private practice in Huntington, Long Island, Jay returned to Cornell as a faculty member. He spent 8 years there, teaching small and exotic animal medicine and working as a referral clinician in the university's teaching hospital.
Jay and his beautiful wife, Susan, have been happily married since 1983. Together, they fell in love with the town of Mattapoisett and decided to open the Mattapoisett Animal Hospital in 1994. They currently live in Rochester and share a home with 4 dogs, 4 cats, 6 birds, and a 49-year-old female turtle named Ralph. Jay is an avid snowboarder and football fan, and if the conditions are permitting, can often be found windsurfing off of Ned's Point. He also enjoys watercolor painting and several pieces of his artwork are displayed in the hospital.