Veterinary Services In Brookline, NH

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Welcome To Brookline Animal Hospital

We’re happy to offer the most progressive and caring veterinary medicine in the greater Nashua area. Our success is a result of experienced doctors and our dedication to providing exceptional veterinary care in a warm, comfortable environment. We are a full service hospital providing preventative care, dental, surgical, imaging, and medical services. We offer 24 hour care for our hospitalized patients. Our specialty services include ultrasonography, imaging, orthopedic surgery, and cardiology. Our highly skilled staff is dedicated to ensuring the best care for your pet. We love caring for our patients…and it shows!

Brookline Animal Hospital is proud to serve Brookline, Nashua, Milford, Hollis, Mason and Townsend and Pepperall, MA as well as surrounding communities. Schedule an appointment online today!

Meet Our Veterinarians

Margaret Monachelli, B.A., D.V.M.

Dr. Margaret Monachelli is experienced in all aspects of small animal medical, surgical and dental care. Dr. Margaret Monachelli holds a B.A. in Psychology from Franklin and Marshall College, She also completed her Post-Graduate Pre-Medical studies at Columbia University. She received her Doctor of Veterinary Medicine Degree from Cornell University where she was a member of the Phi Beta Kappa Honor Society. She has published several articles in medical journals including Neurosurgery and the Journal of Cerebral Blood Flow.Dr. Monachelli has over 25 years of experience as a veterinarian. She has practiced in the greater Nashua area for the past 19 years. Dr. Monachelli founded Brookline Animal Hospital in 2012, and is proud that Brookline Animal Hospital is here to serve the local community by providing exceptional veterinary care. Dr. Monachelli’s goal is to provide the best preventative care to keep your pet healthy through out his/her life. If your pet becomes sick or injured, you can feel secure that Dr Monachelli has the medical knowledge, skill, and experience to manage the most challenging cases.

As a family practice veterinarian, Dr. Monachelli understands the importance of the bond between pets and their “humans.” She believes that client communication and education is crucial to optimal patient care, and strives to give clients updated medical information and advanced techniques to ensure their pets enjoy the very best quality of life. Dr. Monachelli is a member of the American Veterinary Medical Association (AVMA) and the American Animal Hospital Association (AAHA). She enjoys spending free time with her daughters Natalie and Nadine, and husband John. Other activities include hiking, skiing, gardening, boating, and taking care of her animals.


Mary Ellen Blake, B.S., V.M.D.

Dr. Mary Ellen Blake completed her veterinary training at the University of Pennsylvania, in Philadelphia. She holds a B.S. in Biology from Bates College in Lewiston, Maine. Dr. Blake specializes in small animal medicine, having practiced since 2005 in Southern New Hampshire following graduation from veterinary school. She first practiced under the mentorship of Dr. Margaret Monachelli.

Dr. Blake is dedicated to practicing the highest quality of medicine and is thrilled to have Dr. Monachelli and her team at Brookline Animal Hospital.

Dr. Blake is a member of the American Veterinary Medication Association (AVMA) and New Hampshire Veterinary Medical Association (NHVMA). In her spare time, she enjoys the company of her three daughters, her husband, Tim and their dogs Olaf, Mabel, and Layla.


C.J. Churchill, B.S., M.S., D.V.M.

Prior to receiving her Doctor of Veterinary Medicine degree from Tufts University (MA), Dr. Churchill earned Bachelor of Science and Master of Science degrees from The University of Massachusetts – Amherst. Following an internship at Darien (CT) Animal Hospital, Dr. Churchill practiced for seven years with Dr. Margaret Monachelli in Amherst, NH, and for 11 years at a progressive multi-doctor veterinary practice in northern Massachusetts.

Dr. Churchill practices general medicine, soft tissue, and orthopedic surgery including T.T.A. (Tibial Tuberosity Advancement) surgery. She is dedicated to her patients and clients, and provides the highest quality care utilizing new applications and technology. Dr. Churchill is a member of the AVMA (American Veterinary Medical Association) and the AAFT (American Association of Feline Practitioners). In her spare time, Dr. Churchill enjoys her family and pets, as well as her lifelong love of horses and riding.


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