Our Mission. Our Drive. Our Focus.


Commonwealth Equine is committed to the well-being of the horse. Founded in 2017, we are passionate about helping each horse reach their full potential by providing exemplary health care and client education.

Meet Our Team!


Dr. Becky Ruemmler - Practice Owner

Dr. Becky (as she is known to her clients and friends) has been providing health care to horses in New England since 2007. A 2006 graduate of the University of Illinois College of Veterinary Medicine, she gained invaluable experience with colic surgeries, sick foals, and other emergencies working nights at the veterinary school's equine clinic during her 2nd and 3rd years in veterinary school.  She was then asked to stay on as the 2006-2007 Equine Medicine and Surgery intern at the University of Illinois Veterinary Teaching Hospital. After graduation she accepted a position at Boston Equine Associates where she worked from 2007 until 2017 allowing her to gain experience in all facets of equine veterinary medicine while working with her mentor, Dr. Mark Holman, a well-regarded lameness/sport horse veterinarian.

Dr. Becky's obsession with all things equine has been a part of her life for as long as she can remember (Yes, she was that little girl galloping around on the playground pretending to be a horse)!  She began riding as a youngster and has dabbled in many equestrian sports including endurance, cross-country, saddleseat, and has even sat on a reiner! She currently (occasionally) competes at the local level in the hunters/equitation with her Oldenburg gelding, Scooby! She enjoys spending her free time with her husband, Steven Medeiros, who is also a farrier, as well as gardening and baking!

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Melani Cookman - Practice Manager

Melani has been working with Dr. Becky since 2008 and is an indispensable asset to Commonwealth Equine. She has extensive experience working with and managing show horses as well as experience with green horses and young stock.  Melani has been actively showing in the equitation/jumper/hunter rings for over 10 years. She keeps Dr. Becky on track and the practice running smoothly.  Her broad background gives her unique insight into horses and the horse industry. Melani's newest project is her 2018 warmblood filly, Nagini, who is out of her jumper mare, Flight Risk!

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Kayla Waskiewicz - Veterinary Assistant

Kayla joined Commonwealth Equine in the summer of 2019. She has been chasing her equine obsession since she was six years old and just can't get enough, "horse"! Kayla graduated with a Bachelors degree in Anthropology/Sociology and Biology in 2010, with the aspiration to combine her equine infatuation with the vast and fascinating culture of the horse industry. Kayla has worked in an array of equine related atmospheres over the years, always striving to learn something new from each unique experience. She is thrilled to be part of the CWE Team and continue to promote quality care for our beloved horses. When she isn't on a horse chasing her eventing and horsemanship dreams, Kayla enjoys hanging with her canine companion, exploring the countryside, fishing, snowboarding or simply spending time at home with her husband and family.


Levi - Official Vet Truck Dog

Levi has been with Commonwealth Equine since its inception and is in charge of general morale and comic relief. He is excited to go to work every. single. day.  There is nothing better that visiting with the clients of Commonwealth Equine!