Meet Our Team

Dr. Brett Gaby


Dr. Brett Gaby graduated from Cornell University in 1992. Following graduation he spent 2 years in immunological research at the Cornell College of Veterinary Medicine, under lead investigator Neil Norcross (collaborator on the Coggins test developed at Cornell). During this time Dr. Gaby was competing at the national level in rowing. He was sponsored by the New York Athletic Club with whom he won several championships including national titles.

In 1994 he moved to Dublin Ireland to study veterinary sciences at the University College Dublin. While there he carried first class honors throughout the curriculum and obtained a useful equine foundation. After returning to the United States, Dr. Gaby attended the Mississippi State College of Veterinary Medicine and graduated in 1999. He was awarded honors in the clinical pathological sciences from the college. He completed an internship at the Rochester Equine Clinic and was employed by Boston Equine Associates for nearly four years before starting his own practice in 2003. He specializes in lameness diagnosis and treatment.

Dr.Gaby is married to Dr. Amy Clark, also in the practice, and has two daughters. He is occasionally seen riding his horse Summer but has also been known to return to the water to row.

Dr. Amy Clark


Dr. Amy Clark graduated with her Doctor of Veterinary Medicine degree in 2005 from Atlantic Veterinary College in Prince Edward Island Canada. Amy is a native of New Brunswick Canada and began her career with Essex Equine upon graduating. She completed her acupuncture training in 2011 through Colorado Veterinary Medical Association Medical Acupuncture for Veterinarians program and her certification for equine spinal manipulation with Pasteur Equine Learning Institute in Ocala, Florida in 2014. Dr Clark applies her skills practicing general medicine, lameness and reproduction, with an interest in adding integrative medicine. In her spare time she enjoys activities with her two children and tries to find time to ride her own horses.

Dr. Lisa Bethune


Dr. Lisa Bethune grew up in the hunt country of Northern Virginia. She got her first pony when she was in first grade (best Christmas present ever!) and showed that pony in local horse shows from Short Stirrup through Pony Hunters. She was also active in the 4-H horse club growing up and was on the National Horse Judging Team for 2 years in a row. Lisa continued to ride competitively in the hunter/jumpers through high school and college. She went to Sweet Briar College in central Virginia where she was a member of the IHSA team and was a student riding instructor.

After college, Lisa attended graduate school at the University of Maryland, earning a Master’s of Public Health degree in Epidemiology, before making the trek up north to attend veterinary school at Tufts. Upon graduation from vet school, she completed a year-long internship at Rhinebeck Equine in Rhinebeck, New York where she gained extensive experience handling hospital cases, running anesthesia, and going out on ambulatory calls.

Following her internship, she worked at an equine practice outside of Saratoga Springs that specializes in dentistry and sports medicine. Dr. Bethune is excited to return to the Boston area and join Essex Equine in May 2017. In her free time, she enjoys spending time outside, from hiking in the mountains to kayaking along a river.

Dr. Christy Cullen


Dr. Cullen is originally from Canada but moved to Massachusetts at a young age. She graduated cum laude at the University of Connecticut and received her veterinary degree from the Atlantic Veterinary College in 2010 as valedictorian. After graduating, Christy completed an internship at Fairfield Equine in Newtown CT, and stayed on as an associate for 2 years, working in both New England and Wellington FL. Christy joined Essex Equine in 2016, and can be seen often with her two Rough Collies, Franky and Ava. Her professional interests include sports medicine, diagnostic imaging, and gastroscopy. In her free time, she actively competes in Dressage, works with her young Lusitano filly and spends time with her husband and two children.

Kendall Milkey


Kendall was born and raised in southern New Hampshire where she competed on the hunter/jumper circuit. She obtained her bachelor’s degree from the University of New Hampshire. She is a recent graduate from the University of Pennsylvania School of Veterinary Medicine where she received awards in Theriogenology and Patient Care. Her clinical interests include lameness, diagnostic imaging and reproduction. In her spare time Kendall enjoys hiking and riding her horse.

Jenn Dillon

Office Manager

Jenn graduated from Johnson & Wales University in 2005 with a bachelor’s degree in Equine Business Management and Riding. She worked as a barn manager for 3 years before joining Essex Equine in 2008. Jenn has been instrumental in growing the practice and is well-known to the majority of our clients. She enjoys teaching and practicing yoga at her yoga studio, Leominster Yoga Center, and spends her free time hiking with her Cattle Dog, Callie.

Gabby Rummel

Scheduling and Laboratory Manager

Gabby graduated from the University of Rhode Island in 2016 with a biology degree. While there she was involved in several honor societies and was captain of her IHSA equestrian team her junior year. Gabby grew up on her family farm and has been around horses and other animals her entire life and aspires to continue to have them in her life. She was a working student for her aunt’s show barn through high school and has ridden and groomed for several New England hunter jumper trainers. Following graduation, she spent time in the Netherlands riding with trainer and horse scout Uri Burstein. There she managed his private barn of horses. Gabby enjoys riding, hiking, and being outdoors.

Jennifer Bagley

Business Manager

Jen grew up in Connecticut, riding and showing in 4-H and local hunter/equitation competitions. After graduating from Centenary College with an Equine Business degree, she worked at several high-performance show jumping and dressage farms before pursuing her MBA at the University of Connecticut. She spent five years in retail management and moved to MA in 2006 to join SmartPak, where she held a variety of management roles in retail, ecommerce, and merchandising during her 15-year tenure.

During that time, Jen consulted for several small veterinary practices, and in 2021 she fully transitioned to the veterinary industry, joining Essex Equine to help manage the business side of the practice. Jen has been riding as an amateur since grad school and competes her OTTB at local recognized horse trials and dressage shows. Jen has a dog named Chappy, and Chappy has an emotional support cat named Mama Kitty.

Meaghan Dwyer

Head of Inpatient Care and Barn Manager

Meaghan began riding in Chelmsford, MA at 7 years old and immediately knew this was the road she would travel into and through adulthood. When she turned 10, Meaghan received her first horse, Prince. She worked as a barn hand and sought out knowledge, assisting Dr. Gaby whenever possible. She competed in IEA throughout high school and was the captain of her team in her junior and senior year. As a junior Meaghan competed in the Big Eq as well as the jumpers.

In her amateur years she continued showing jumpers but also enjoyed riding dressage with her mother. Her passion has always been working with young or untrained horses to build their confidence and skill as show horses. She is best known for her ability to train ponies, and her petite build has allowed her love of ponies to continue far past her childhood years. Most recently, Meaghan was the barn/business manager for a 47-horse show facility, where her charges received top-notch care.

Meaghan went through the life-changing event of requiring a kidney transplant. Although most transplant patients are advised to steer clear of farm environments, it was the need for equine contact and their reciprocated compassion that transformed her life to what it is today. In her free time, she enjoys pampering and caring for her mother’s 31-year-old, retired dressage horse!

Ryan Healy

Property Manager

Ryan graduated from Mount Ida College in 2010 with a Bachelor’s of Science in Veterinary Technology. While in school, he was a kennel manager, worked at local small animal ER, was Vice President of the SCNAVTA, and was a teaching assistant. He completed internships with New England Equine Medical and Surgical Center, Tufts University Hospital for Large Animals, and the teaching farm at Tufts, as well as contributing writing a reproduction chapter in “Veterinary Technician’s Large Animal Daily Reference Guide;” published by Wiley Blackwell. After graduating, he worked as the assistant manager at a large eventing barn in Groton MA for 4 years before joining Essex Equine in 2015. Ryan enjoys hunting, fishing, kayaking, and anything outdoors.

Lisa Schiavone

Lead Veterinary Technician

Lisa began riding in Lexington, MA at 9 years old. When she turned 16 she rescued her first horse, a Standardbred named Ricochet. She competed in IEA throughout high school and was the captain of her team in her senior year. Lisa attended UMass Dartmouth and graduated with a B.S. in Small Business Management/ Entrepreneurship. Throughout college she worked at several different hunter/jumper farms and obtained her Horseback riding Instructors license. She worked at Northgate Farm in Sudbury as an instructor and farm manager until it’s sale in 2018. She then became a member of the Essex Equine team as a Vet Tech for Dr. Bethune in the summer of 2018. In her free time Lisa enjoys kayaking, traveling, and converting her school bus into a camper.

Cathy Hooper

Office and Laboratory Assistant

Cathy has been in the horse industry for over 30 years. She is married with a dog named Lolly, two children, a grand-dog Sam and lives in Bedford MA. She has been working part time at Essex Equine since 2007. “I am thrilled to be working in a practice with such skilled and intelligent people. There is always something to learn!”

Lucy McNamara

Veterinary Technician

Lucy began riding at 8 years old, rode in her first event when she was 11, and has been eventing ever since. She started working at Apple Tree Farm to help pay to lease her favorite lesson horse, who she later bought. She spent several years as a working student in NH and Aiken as well as working at several local barns and tack shops before joining the Essex Equine team in 2019. You will see her assisting Dr. Cullen as her tech. She continues to event and has two horses currently, a draft cross named Dunkin and an OTTB named Maizey.

Haylee Tervo

Veterinary Technician

Bio coming soon!

Ally Govoni

Veterinary Technician

Ally began riding as a young girl and never looked back! Horses have been apart of every aspect of her life since. Ally grew up riding eventing horses until she found her love for reining. Attending college at Colorado State University, Ally continued to pursue her passion for horses and studied Equine Science. Being out in the west, it opened up lots of new opportunities for Ally that she had never dreamed of. After becoming the Breeding Assistant Manager at a 300,000 acre working cattle ranch in Wyoming, Ally’s natural talent for breeding and working with babies began to shine! After 5 very successful years caring for 80+ horses on the ranch and foaling out 30+ mares a year, she made the decision to start the road to becoming a vet.

Leading her back to the east coast of home, she continued her reining career and now has two quarter horses, Marilyn and Slim. You will almost always find Ally with her adorable Australian Shepherd named Wyatt around the barn and out in the field.

Jennifer Raffi

Veterinary Technician

Jenn grew up in Littleton Ma and began showing on the Arabians circuit as a kid before making the switch to the sport of dressage. Throughout her teens and early twenties she was highly involved in high performance dressage, competing in many international dressage competitions as a young rider with her horse Rondo. In addition to managing a barn for a USA dressage team rider, teaching, and training and she’s also involved in the USDF ‘L’ program for aspiring dressage judges. She decided to expand her knowledge and joined Essex Equine as vet tech assisting Dr. Gaby and Dr. Milkey. In her spare time, she enjoys training and showing her current horse Bebe.

Adrienne Weaver


Adrienne has over 30 years of experience in the horse industry. She graduated from Centenary College with a BS in Equine Studies and received her BHSAI while studying abroad in England. She is a MA licensed riding instructor and has worked with broodmares, foals, race horses, and show horses up and down the East Coast. Adrienne enjoys reading, riding her motorcycle, and being surrounded by furry friends!