Medfield Veterinary Clinic‘s staff is filled with highly trained and experienced animal lovers who care deeply about their jobs. Everyone makes it a goal to learn everything they can about the field they love in order to give our patients the highest level of care.


Dr. Richard Crowell was born in Boston and grew up in Needham, MA graduating from Needham High School in 1977. He graduated from Fairfield University with a major in Biology in 1981 and then graduated from Boston College with a Master’s degree in Biology in 1985. Dr. Crowell received his DVM degree in 1990 from the Tufts University School of Veterinary Medicine.

Dr. Crowell owned the Franklin Veterinary Clinic in Franklin, MA for 10 years. He has worked at the Tufts Emergency Treatment Center in Walpole and the Legion Animal Hospital in Holliston. He started the Medfield Veterinary Clinic in December of 2002.

Dr. Crowell is a member of the American Veterinary Medical Association, the Massachusetts Veterinary Medical Association, and the American Animal Hospital Association.

Dr. Crowell lives in Medfield with his wife, Deirdre. They have four children along with a golden retriever.


Dr. Peter Kirk grew up in Portsmouth, Rhode Island and graduated from Ross University School of Veterinary Medicine in 2005, after completing a year of clinical education at the University of Georgia. He has been with Medfield Veterinary Clinic since 2006.

Dr. Kirk lives locally with his wife, two daughters, and one cat.


Dr. Sandy Higgins has been practicing small animal veterinary medicine since 1992. She graduated Mount Holyoke College with a Bachelor’s degree in Biology in 1986. After working in a research lab at Children’s Hospital for two years, she earned her DVM degree at Tufts University School of Veterinary Medicine in Grafton, MA., graduating Cum Laude in 1992. She was also a member of the Phi Zeta Honors Society. After veterinary school, Dr. Higgins completed a 13 month small animal internship at Angell Memorial Animal Hospital in Jamaica Plain, MA. She has been a general practitioner in the local Boston area ever since! In her spare time, Sandy enjoys spending time with her husband and two sons, Daniel and Michael. Her hobbies include ice skating, cooking and gardening. She has two golden retrievers, Reggie and Tessie, and a cat named Dusty.


Dr Julie Shields grew up in Ontario, Canada and lived there for 20 years until moving to New Hampshire with her family. She graduated from Ross University School of Veterinary Medicine in January 2008 after completing a year of clinical education at Virginia-Maryland Regional College of Veterinary Medicine (at Virginia Tech). Dr. Shields has been with the Medfield Veterinary Clinic since February 2008.

Dr. Shields lives in Boston with her husband Tyson, their son Kaiden, and their daughter Taylor. They have a Labradoodle named Brinley and a Havanese named Ozzie.


Kelly Summerhayes Greenfield joined Medfield Veterinary Clinic in August 2014 after just completing a rotating medicine/surgery internship at Tufts VETS in Walpole. She earned her Bachelor’s degree from the University of Massachusetts in 2006, where she majored in pre-veterinary medicine. After completing her undergraduate degree she moved back to London, England and worked for 2 years as a small animal veterinary technician. Kelly attended St. George’s University School of Veterinary Medicine, where she earned her DVM degree in 2013. She completed her clinical fourth year at Cornell’s Hospital for Animals. Kelly currently lives locally with her family and their pets.


Dr. Jessie Hopkins grew up in Needham, MA and graduated from Needham High School in 1998. She graduated from the University of Georgia with a BS in biology in 2002 and the University of Georgia College of Veterinary Medicine in 2006. Dr. Hopkins recently moved back to Massachusetts after working in Atlanta for the past 7 years. She lives in Medfield with her family and their pets.


The Medfield Veterinary Clinic and Westwood Veterinary Care are excited to welcome Dr Marie Petropoulos. Marie grew up locally in Stoughton, Massachusetts. She recieved a Bachelor’s Degree in Biology from the University of New Hampshire. She graduated with honors and was a Presidential Scholar. She received her doctorate in veterinary medicine from the University of Pennsylvania. She currently still resides in Stoughton with her family and two cats, Cloud and Storm. She is looking forward to working with you to help your furry family members. You may schedule an appointment with her at both the Medfield and Westwood offices.


Dr. Dundon is a graduate of Xaverian High School. He received a Bachelor of Science Degree in Biology from Providence College and a Doctorate in Veterinary Medicine from University College Dublin. He is a member of the Royal College of Veterinary Surgeons. He has worked as an equine and small animal veterinarian over the last 5 years, recently completing an internship in small animal medicine at Ocean State Veterinary Specialists. He is USDA Accredited, has advanced dentistry certification. He is a member of the American Veterinary Medical Association and American Animal Hospital Association. He is available for appointments Monday through Saturday. Contact the Clinics to make an appointment.