About Us

Meet the CAH team

At the Concord Animal Hospital, we strive to offer you and your pets the very best in veterinary care. We are animal lovers who are passionate about working with you to develop a healthcare plan best suited for your one-of-a-kind pet to keep them happy and healthy.

Dr. Stephen Wilson & Katherine Wilson, Co-Owners

Katherine & Dr. Stephen Wilson, owners of Concord Animal Hospital (CAH) since 2015, live in Concord with their cats (Cookie & Meadow), dog (Petal), guinea pig (Beans), and two amazing children (Johanna and Peter).

Originally from Connecticut, Dr. Wilson grew up with Jack Russells, Corgis and Basset Hounds. He completed his undergraduate degree at the University of California, Davis, and then he worked in an immunology lab at Children’s Hospital, Boston, with an amazing team whose work was published in Nature Genetics.

As a child, he shadowed his brother-in-law, a large animal vet, and fell in love with caring for animals. He considered a few other careers, including wine making and a career in culinary, but was happy to fulfill his dream of becoming a veterinarian after graduating from the Tufts Cummings School of Veterinary Medicine. His wife thoroughly enjoys his superb cooking abilities and occasional home-brewed beer or cider.

Katherine grew up Concord, attending Alcott, Sanborn, and Concord Academy. Her family included a rescue dog and cat from Buddy Dog as well as three West Highland Terriers - all patients of CAH.

She attended the University of Michigan and worked in finance before attending Tufts University to earn her MA in Education and then teaching at the Concord Middle School. After that, she earned her MBA from Boston College and spent seven years in market research and marketing. She is happy that all of these roles somehow perfectly aligned to prepare her to manage CAH!

Katherine Aubert, DVM

Dr. Aubert is a graduate of Acton Boxboro High School and the College of Veterinary Medicine at the University of Minnesota. She practiced locally for seven years before joining the team at CAH.

In her spare time, she enjoys crafting, gardening, and seeing live music. She also volunteers with The Street Dog Coalition, helping to provide medical care to pets of people experiencing, or at risk of, homelessness.

She shares her home with Davy and Olive, two Cavalier King Charles Spaniels.

Kathryn Carpenter, DVM, cVMA

Dr. Carpenter grew up on Long Island in Massapequa, NY. She graduated from Tufts University Cummings School of Veterinary Medicine in 2011 and worked at private practices in Revere, South Boston and Arlington before coming to CAH.

Dr. Carpenter trained at the Curacore Integrative Medicine and Education Center and is certified in veterinary medical acupuncture.

In her free time, Dr. Carpenter enjoys spending time with family and friends. She lives with her husband and three young daughters.

Lily Coppinger, DVM

Dr. Coppinger's brings warmth, knowledge, and dedication to every patient she meets!

Originally from Massachusetts, Dr. Coppinger earned her Doctorate of Veterinary Medicine from the Tufts Cummings School of Veterinary Medicine. While at Tufts, she co-founded the school’s Nutrition Club and served as treasurer of the veterinary fraternity Alpha Psi. She practiced at an animal hospital in Maine before joining the CAH team in fall 2025. She already feels like part of the family!

Outside of work, Dr. Coppinger enjoys being outside, reading, spending time with friends and family, and taking walks with her miniature Australian shepherd, Eddy, and cat, Theo.

Mark Fagan, DVM

Originally hailing from Queens, NY, Dr. Mark Fagan made his way to Tufts University for undergrad—and never quite left Boston, thanks to meeting his future wife there (love story meets life plan). He earned his veterinary degree from Cornell University and has been practicing since 2013, including several years running his own clinic.

As a dedicated general practitioner, Dr. Fagan brings years of experience, a calm demeanor, and a genuine love for animals to every visit. When he's not at the hospital caring for pets, he's usually chasing after his children and dogs. He enjoys traveling, running, and watching nostalgic movies from the 80s and 90s.

Chandler Fritz, DVM

A graduate of Williams College and the Tufts Cummings School of Veterinary Medicine, Dr. Fritz has been in small animal practice for over 20 years. A native of neighboring Carlisle and now a resident of Concord, she loves working in the community where she grew up and is now raising her own family.

In her free time, she enjoys spending time with her husband and three children, walking with her Yorkie and two Labs, reading, golfing and cooking. Dr. Fritz volunteers at a local hospital with Ibby, her seven year old certified therapy dog.

Bradford Hardie, DVM

Dr. Hardie knew he wanted to be a veterinarian from an early age. In high school, he worked with native wild animals at Drumlin Farm in Lincoln and with community pets at CAH. He received his undergraduate and veterinary degrees from Cornell University. After graduation, Dr. Hardie spent two years in mixed animal practice in Shrewsbury. He decided he had had enough calving distress calls in the middle of the night, so he rejoined CAH, now as a veterinarian.

When he is not busy at the animal hospital, Dr. Hardie enjoys travelling and hiking with his wife.

Kaitlin Rondeau, DVM

A graduate of Pine Manor College and the Tufts Cummings School of Veterinary Medicine, Dr. Rondeau has been in small animal practice for 10 years. She has previously practiced at Middlesex County Animal Hospital and Hudson Animal Hospital before joining the CAH team in the fall of 2020.

Dr. Rondeau is a native of neighboring Chelmsford. She still lives there with her husband, two children, and their dog, Josie. In her free time, she enjoys running and spending time with her family.

Jen Arsenault, CSR

Jen graduated from Becker College with a degree in Veterinary Technology. She worked as a Veterinary Technician until she made the shift to a Client Service Representative role.

She enjoys spending time with her family which includes her husband, one child, their Rottweiler mix, two cats, two guinea pigs and a bearded dragon. Although she loves all pets, her favorite breed is "rescue" - most of her family pets have come from shelters and foster homes.

Joe Avey, CSR

Joe has been with the team since before the Wilson's purchased CAH in 2015. He's the one who remembers what prescription food your cat is on and the ear infection your dog had six years ago. He remembers because he cares about your pet!

Joe grew up in nearby Marlborough and practiced and taught Tae Kwon Do and Hapkido for a number of years. He is a super Star Wars fan and routs for the Yankees - go figure living in the middle of Red Sox nation. Outside of work, Joe enjoys a good poker game, an occasional Kraken and spending time with his girlfriend and once feral, now relatively tame cat, Milky Way.

Muriel Jones, CSR

Muriel is originally from the south of France and studied business and marketing in Paris before making Massachusetts her home. As our Client Service Representative, she brings years of experience in pet sitting and dog walking, combining her professional background with her lifelong love of animals.

Muriel also manages a local dance studio in Acton and lives with her husband and daughter, their tuxedo cat Jack, and their dog Lilly. She still has close family in France and enjoys staying connected to her roots. In her free time, Muriel loves reading, hiking, and spending time in nature—especially by the water.

Becca Kenney, CSR

Becca grew up with four sisters in Hudson. She attended MassArt in Boston and then spent six years with the AIDS Action Committee of Massachusetts. Eventually, the pull of her family was too strong and she moved from Boston to Maynard to be closer to her family and joined the CAH family - lucky us!

In her spare time, Becca and her husband loves to go on hikes, rescue baby squirrels that get lost in her basement, make linocut stamps, and hang out with her nephews and niece.

Mary Moore, CSR & Certified Veterinary Technician

Mary grew up locally and loves working at a family-owned practice where she can help give personalized care to the beloved pets that are an important part of our community. She believes that animal welfare and human welfare are closely connected and she fosters cats and helps animal rescue groups when she is able to in her free time.

You will see Mary at the front desk, but occasionally flexing her skills in exam rooms as a Certified Veterinary Technician. Her specialty is helping out nervous and feisty kitties, and is often referred to as ‘the cat whisperer’ by her coworkers.

Jane Philbrick, CSR & Veterinary Technician

Jane, the youngest of five children, shares her home with her husband and cats. During her senior year of high school she interned at an animal hospital and has been working in the veterinary field since.

These days, you will see Jane both at the reception desk as well as in appointments as a Technician. Her love of animals runs deep and one day she hopes to start her own farm.

Jane's husband has also inspired a love of antique cars. The two love going to car shows & meets and for rides in Jon's all-original 1930 Ford model-A tudor. She also loves visiting antique shops as well as hiking and fishing.

Katie Taylor, CSR

Katie is one of the friendly faces at our front desk, bringing warmth, efficiency, and a love for animals to every interaction. She’s currently studying to become an X-ray technician and has a background in customer service, having worked at GEICO and as a server at several local restaurants.

A Littleton native, Katie has also spent time living in Virginia Beach but is happy to be back in her hometown. She shares her life with three adorable dogs—Bo, Marty, and Stella— and loves exploring the outdoors with them on hikes.

Izzy Hamnqvist, Groomer

Izzy has over 10 years of experience grooming cats & dogs, including standard poodles like her own dogs! We and the pets of our community are so happy to have her on our team!

Stacie Ornellas, Certified Veterinary Technician and Head Technician

Stacie has been a veterinary technician since 2002, graduating with Honors in Applied Science (Veterinary Technology) from North Shore Community College in 2005. Passionate about creating a positive experience for pets, she is certified in low-stress handling and trains staff in these techniques to help reduce anxiety during visits. Stacie finds working in an animal hospital deeply rewarding, believing that “our pets fulfill our lives.”

Outside of work, she enjoys traveling, summer boating with her husband, and cheering on the New England Patriots and Boston Bruins. Their home is shared with 3 cats, a box turtle, and a long history of other unique pets including rats and tortoises.

Alaura Allen, Veterinary Technician

Originally from Rhode Island, Alaura now calls Stow home, where she lives with her fiancé and their two spoiled cats who basically run the house. Before joining the world of veterinary medicine, she worked as an EMT and went through paramedic school, but after the pandemic, she realized her heart was really with animals - the furry patients are way cuter anyway!

Always an animal lover at heart, Alaura is now living her dream helping pets every day at the animal hospital since 2021. Alaura also co-manages the hospital's social media with Margalit, allowing her creative side through. If you hear someone laughing or chatting a little too loud in the hospital - chances are, it’s Alaura. She brings a big voice, a big heart and an uncanny knack for organizing just about anything.

When she’s not at work, you’ll find her digging in the garden, cooking up something delicious, getting lost in a good book, working on craft projects, or enjoying the great outdoors—especially if there’s a beach involved.

Ali Bitar, Veterinary Technician

Ali is a lifelong animal lover with a BS in Biology from Salem State University. She’s currently enrolled in the Veterinary Technician program at Penn Foster. Ali has hands-on experience working in animal shelters and as a husbandry intern with California sea lions at Mystic Aquarium.

She lives with her husband, two dogs, and two rabbits. In her free time, she enjoys baking sourdough bread, reading, birdwatching, and diving into animal research.

Kylie Costik, Certified Veterinary Technician

Kylie grew up just outside of Hershey, Pennsylvania, and still enjoys visiting home whenever she can. She graduated from the Veterinary Technology program at YTI and has built her experience working in specialty veterinary medicine, including positions at CVCA and Cornell. Kylie has a special interest in radiology and physical rehabilitation and enjoys continuing to learn and grow within the field.

Outside of work, Kylie loves spending time with her pets, including her dog, Spring, and her cats, Vincent and Ziggy. Her family also shares a cat back in Pennsylvania named Mr. Bigglesworth. In her free time, she enjoys gardening, crafting, hiking, and horseback riding. She hopes to have her horse, Alfie, join her in Massachusetts in the near future.

Leah Gamache, Veterinary Assistant

Leah has always had a deep love for animals, especially dogs. Her passion began in childhood with her beloved beagle, Lou, who was her constant companion and the star of every imaginary game, from animal hospital to dog shows (and lots of dress-up!).

Today, Leah brings that same heart and enthusiasm to her work, finding joy in a job that fulfills her lifelong dream. She’s currently enrolled in the nursing program at Mount Wachusett and loves spending her free time with her adorable dachshund, Rusty, or lifting weights at the gym.

Kayla Gray, Veterinary Technician

Kayla has been working in the animal care field for several years, and has been a part of the CAH team since mid-2020. Kayla is currently enrolled with Penn Foster to get her Veterinary Technician certification. Growing up with German shepherds, Kayla developed a strong love and passion for veterinary medicine at a young age.

She shares her home with her boyfriend, her beautiful German shepherd, Bobo, and her spirited Australian shepherd Cooper - who ensure there’s never a dull moment.

In her free time Kayla enjoys going to concerts, adventuring with her pups, and spending time at the lake.

Abby Kaplan, Veterinary Assistant

Abby graduated from Skidmore College in 2020 as a Business Major and Studio Art minor. She started as a Veterinary Technician at Tufts in the Hospital for Large Animals then moved to CAH. She has loved working in both small and large animal medicine. Abby is currently attending Vet School at University of Glasgow in Scotland, class of 2030 - we know she will be an amazing vet!

In her free time, Abby loves hiking and running with her two dogs, Henry and Grace. An avid equestrian, she has a miniature pony named Petunia who she loves dearly. Some of her favorite hobbies include painting, running and finding the best new brewery or ice cream spot! We're thrilled that Abby is willing to spend her vacations back on the CAH team!

Rachel Lerman, Veterinary Technician

Rachel graduated from Salem State and is currently enrolled in the Penn Foster Veterinary Technician program. She and her husband share their home with a beautiful husky mix, Misha, and two cats, Gus and Minerva.

Rachel adores working for a small animal hospital. She believe in treating each pet as her own. You can find her hanging out at the beach in any season, seeing live music, or on the hiking trails.

Grace Lewis, Veterinary Assistant

Grace attended a technical high school, where she participated in a veterinary science program and discovered her passion for animal care. She has experience working at a dog daycare and boarding kennel and enjoys helping animals feel safe, comfortable, and cared for.
Grace is a proud pet parent to her two cats: Bando ("Bean") and Pibble ("Pip"). In her free time, she enjoys playing video games and spending time with her pets. She is currently exploring her options for future education and career opportunities.

Amanda Liefeld, Veterinary Assistant

Amanda's picture & life story coming soon!

Hope Madden

Hope is a recent graduate of Wheaton College in Massachusetts, where she studied Biology on a pre-veterinary track. She joins us with a wealth of hands-on experience, having previously served as a dog trainer, kennel attendant, and veterinary intern. Most notably, she worked as a mammal trainer at the Maritime Aquarium, where she cared for a diverse array of species, from harbor seals to porcupines.

Originally from Warwick, Rhode Island, Hope loves spending time by the water. In her free time, she enjoys latin dance, wood carving, aerial skills, and singing. Hope is dedicated to pursuing her dream of becoming a veterinarian in the future.

Eunice Pak, Veterinary Technician

Eunice first worked with animals while volunteering at an animal shelter and has been passionate about animal care ever since. She grew up with 2 beloved cats - Sally and Doodles - who helped spark this life long love.

Currently a student at Berklee College of Music in Contemporary Writing and Production, Eunice enjoys making music and playing video games. She also finds a deep fulfillment in providing love and support to pets in need. Working with animals reminds her daily to lead with compassion and feel endlessly grateful to share the world with such incredible creatures.

Erica Rowell, Veterinary Assistant

Erica received her bachelor’s degree in Equine Science with a minor in Criminal Justice in 2010. She has always had a love for animals and grew up with horses, cats, and dogs. After spending 15 years in cancer research, she joined the Concord Animal Hospital team as a Veterinary Assistant, fulfilling her long-held goal of working in an animal hospital.

Erica lives in New Hampshire with her husband and four daughters on a small two-acre farm. Her home is filled with animals, including three KuneKune pigs, two dogs (Charlie and Milo), two cats (Sassy and Sylvester), as well as chickens and ducks. When she is not at the hospital, Erica enjoys working around her farm and going on hikes with her family and dogs.

Margalit Shapiro-Katz, Veterinary Assistant

Margalit lives in Boston with her husband, toddler son, two cats, and three dogs—two of whom she co-owns with her moms.

With over a decade of experience in animal care, therapy, and education — including work with cheetahs in South Africa — she has been part of the Concord Animal Hospital team since 2021. Margalit manages the hospital’s social media and serves as the team's Spanish translator. She brings a global, creative, and compassionate perspective to her work. Outside the clinic, she loves traveling and adventuring with her family

Natalia Solas, Veterinary Assistant

Natalia rediscovered her childhood passion for veterinary medicine after switching majors to biology—and hasn’t looked back since. She finds deep fulfillment in building strong relationships with clients and their pets, and loves being part of their care journey. At home, she lives with two beloved cats, Rajah and Evangeline (a resilient tripod) both of whom inspire her daily. With a long-term goal of becoming an aquatic veterinarian, she’s excited to continue growing in the field. Veterinary medicine has been the perfect fit for her love of animals, science, and meaningful connection.

Kelly Willet, Veterinary Assistant

Kelly holds a Bachelor of Science from the University of Tampa and has always been driven by a lifelong passion for animal care. Working as a veterinary assistant is one of her proudest accomplishments, allowing her to make a meaningful difference in the lives of animals while continuing to grow in the field.

At home, Kelly has two rescued huskies, Blake and Luna, both of whom came from challenging pasts. Caring for them has taught her patience, compassion, and a thoughtful approach she brings to every animal she works with. Their resilience continues to inspire her every day and fuels her love for the work she does.