Our Team of Experts in Nashua, NH

Are you looking for veterinarians in Nashua who offer nothing but compassionate, high-quality care for pets? You found it at All Pets Veterinary Hospital, where our team in Nashua, NH are passionate about making and keeping pets well. If you have any questions about our veterinarians or need to schedule an appointment, give us a call at 603-882-0494.

Melissa Magnuson


Dr. Melissa Magnuson grew up on a small pig and cattle farm in southern Minnesota, so it was no surprise that she’d acquire a love for animals. She earned a degree in biology and philosophy from Hamline University in St. Paul, MN, before earning her master’s degree from Southern Mississippi University. In 1998 she completed her Doctorate in Veterinary Medicine from the University of Minnesota in 1998, fulfilling her passion to help animals in need.

Shortly after graduating, she moved to the east coast for an internship in small animal medicine, surgery, and emergency medicine. She now has a special interest in surgery, emergency medicine, and avian and exotic animal care. Confucius said if you choose a job you love, you’ll never have to work a day in your life. Dr. Magnuson did just that; she chose a career she loves and is passionate about, so she never feels like she’s at work.

Dr. Magnuson is married to her best friend, Andy, with whom she has three beautiful daughters. She’s also a “pet mom” to four dogs, three cats, a bird, a bearded dragon, and a guinea pig. When she’s not at work, she enjoys spending time with her family outdoors, swimming, hiking, biking, and reading.

Marlena Grasso


Dr. Grasso is a New England native who spent most of her life living in Massachusetts before moving to New Hampshire. She received her Bachelor’s degree in Pre-Veterinary Science from the University of Massachusetts Amherst in 2013. While Dr. Grasso has always loved animals, it was not until her time at UMass that she discovered her passion for veterinary medicine and never looked back. Dr. Grasso attended the Cummings School of Veterinary Medicine at Tufts University and earned her Doctorate of Veterinary Medicine in 2017.

While she is enthusiastic about all aspects of veterinary medicine, she particularly enjoys performing surgeries and working up complex cases. She has a special interest in feline medicine and minimizing stress in our feline patients both at home and in the hospital. One of her favorite parts of the job is educating clients about their pets’ health and making veterinary care a team effort.

Dr. Grasso currently resides in New Hampshire with her fiancé, Johnny, and their two cats, Schmoo and Ninja. Outside of work she enjoys many of the outdoor activities that New Hampshire has to offer, including rock climbing, hiking, camping, kayaking, and biking.

Alexandra Kilgore


Alexandra Kilgore, “Alix” grew up in Connecticut and always had a passion for science and medicine. She graduated from Carnegie Mellon University with a degree in biochemistry and began her career in the field of immunology and leukemia research. Medical research inspired her interest in comparative medicine. Her love of nature, her pets, two Irish setters and three cats, and rescuing an owl in the White Mountains were her inspiration to become a veterinarian. She graduated in the first class of Tufts University School of Veterinary Medicine in 1983. During vet school Alix spent time at the National Zoo in Washington D.C. and worked at Franklin Park Zoo. She began practice as a new graduate with significant experience with avian and exotic patients and became one of the first veterinarians in New England to do surgical sexing of birds laparoscopically. She practiced small animal avian and exotic medicine at Littleton Animal Hospital in Littleton, Massachusetts, for 34 years. She has been the Massachusetts liaison to the Association of Avian Veterinarians (AAV) for the past 20 years and the New England Avian and Exotics Rounds Coordinator for the past 10 years, She has published numerous articles and educational presentations to the Association of Avian Veterinarians, the Association of Exotic Mammal Veterinarians, the American Holistic Veterinary Association, and the Tufts Avian Exotic Conference. She loves all aspects of small animal medicine and surgery and performs many specialized surgeries such as avian spays, shell and beak repair, guinea pig spays, ferret adrenal surgery and pancreatic surgery, and small mammal dentistry. Her most favorite surgery was removing construction staples and other hardware from the crop and gizzard of a peacock named Peaches who obviously likes shiny things!!

At home Alix enjoys kayaking, snow shoeing, and hiking with her husband John and their dogs Tulley, Willie, and Cinnamon. Her hobbies include sewing crafts, reading, gardening and photography of birds especially hummingbirds. Her pets at three rescue dogs, one cat, and two birds.

Rebecca Rios


Originally from Massachusetts, Dr. Rios has always considered herself a New Englander. She earned her Bachelor of Science degree in biology in 2009 from the University of Massachusetts-Dartmouth. She was also an avid member and captain of the university’s field hockey team at that time. In 2013, she earned her Doctorate of Veterinary Medicine from the University of Missouri in Columbia, MO.

It was during her years in college that Dr. Rios discovered a passion for veterinary medicine. She has always loved science and animals, so veterinary medicine seemed like the perfect way to combine both of these interests. She now has a special interest in small animal surgery and clinical pathology. While she enjoyed her time out in the Midwest, she always knew she would end up back in the New England area.

Dr. Rios currently resides in Massachusetts with her husband, Rafael, and their dog, Taj. Her personal interests include running with her dog, painting, reading, field hockey, and watching all of the Boston sports teams.

Catherine Reese

DVM, Diplomate ACVS

Meet our traveling surgeon.

Dr. Reese graduated from Cornell University in 1991 and from Tufts University’s School of Veterinary Medicine four years later. She went on to complete an internship at Angell Memorial Animal Hospital in Boston in 1996, followed by a small animal surgical residency at Cornell University in 1999. After her residency, she returned to Angell as a staff surgeon for almost 12 years. She was also the director of the Surgery Residency Program there, where she trained more than 30 new board-certified surgeons. In 2001 she became board-certified as a specialist in small animal surgery by the American College of Veterinary Surgeons. To stay current on the latest veterinary trends, she’s a member of the AVMA, MVMA, NHVMA, Society for Veterinary Soft Tissue Surgery, Veterinary Society of Surgical Oncology, and Veterinary Orthopedic Society.

Dr. Reese brings a wealth of experience in the field of advanced animal surgery to our hospital. Her diverse skills range from orthopedic to neurologic to soft tissue procedures. These procedures include advanced fracture repair, laryngeal tieback surgery, brachycephalic airway correction, persistent right aortic arch surgery, thoracic duct ligation and cisterna chyli ablation for idiopathic chylothorax, lateral and ventral bulla osteotomy, skin grafting, oncologic surgery, patella luxation repair, and cranial cruciate ligament repair. In 2000 she became certified to perform the Tibial Plateau Leveling Osteotomy (TPLO) procedure for cranial cruciate ligament repair. Two years later, she became one of the first surgeons in New England to perform Tibial Tuberosity Advancements (TTAs) for cranial cruciate ligament repair. She takes prides in her ability to provide compassionate care for her patients, and she maintain open communication with their owners.

Dr. Reese shares her home with her son and husband. In her rare free time, she enjoys traveling, gardening, softball, and golf.

Emily Rajaniemi


Dr. Emily Rajaniemi grew up in Massachusetts and has always wanted to be a veterinarian. She attended the University of New Hampshire where she received her degree in pre-veterinary medicine. She then moved to the island of St. Kitts where she attended veterinary school at Ross University and got her first dog, Tank, a greyhound mix.  She then moved back to Massachusetts to complete her veterinary degree at Cummings School of Veterinary Medicine at Tufts University. Currently Dr. Em (as her clients and patients know her) is living in New Hampshire with her younger sister, Leah, and her boyfriend, Zack. Together they have quite the zoo consisting of 3 dogs; Tank, a Greyhound mix, Chesney, a golden retriever, and Rocco, a husky, and 3 cats named Poufcat, Marley and Castiel.

Dr. Em’s interests are greatly focused on behavior because her first dog has separation anxiety. His anxiety helped stem her desire to understand more about how pets think. Otherwise she has a strong interest in surgery and pain management. When Dr. Em is not at work she loves to do anything with her dogs, go camping or spend time at her family’s lake house in Maine.

Katelyn Guill-Sanchez


Dr. Katelyn Guill-Sanchez grew up in Hudson, NH and attended Bishop Guertin High School. Her love of animals started from an early age, and even as a young girl she spent her free time reading veterinary books from the old Hudson library. In 2016, she earned her Bachelors of Science in Biology from Emmanuel College in Boston with a minor in French Language. She earned her Doctorate of Veterinary Medicine from Kansas State University in 2020. There, she also received a certificate from the Veterinary Business Management Association and sat on a number of executive boards.

Dr. Kate always knew she wanted to be a veterinarian, but it wasn’t until vet school that she knew in what capacity. While at Kansas State, Dr. Kate developed a passion for exotic animal medicine and small animal surgery. She hopes to combine her love of volunteering and medicine by helping local shelters and non-profit organizations in her free time.

Dr. Kate currently resides with her husband, Stephen, and their 2 cats, Frankie and Louie. They also have a rescued leopard gecko named Jeffrey. Her personal interests include hiking, traveling, cooking, and reading. Fun fact: Dr. Kate’s first veterinary job was as an assistant at All Pets in 2012!