Our Veterinarians
Catherine(Hartunian) Applegate, DVM is a native of Lexington and a graduate of Ohio State University School of Veterinary Medicine. Dr. Applegate co-owns Lexington Veterinary Associates with Dr. Smith. She has extensive experience with internal medicine and surgery in small animal practice. She is dedicated to keeping the family practice values we have always had at Lexington Veterinary Associates.
Daria Smith, DVM, MS – Chief of Medicine – Dr. Smith is a graduate of Tufts University School of Veterinary Medicine. With over 25 years experience as a small animal Veterinarian. Dr. Smith has co-owned Lexington Veterinary Associates since 1994.
Alexis Messler, DVM, MS Originally from Brookline, MA, Dr. Messler earned both her Bachelor's and Master's degrees at Clark University. She spent several years in the human medical field before attending Tuft's Cummings School of Veterinary Medicine where she received her veterinary degree. Her primary interests include preventative care, surgery, and dentistry.
Giles Siddons, DVM, MS grew up on Long Island New York and has lived in the Boston Area since 2008. He received his masters from the University of Illinois at Urbana-Champaign and his veterinary degree from Tufts. His medical interest include surgery, diagnostic imaging and clinical pathology. Outside of the clinic he enjoys spending time with his family, listening to and playing music.
Kierra Walsh, DVM grew up in Billerica, MA and stayed in the area to earn her veterinary degree from Cummings School of Veterinary Medicine at Tufts University. With a background in zoo medicine, Dr. Walsh particularly loves seeing companion exotic and farm animals. Her other medical interests include nutrition and reproductive health, including responsible breeding practices. As a lifelong Golden Retriever fanatic, Dr. Walsh spends much of her free time hiking with, and throwing tennis balls for, her own golden, Hazelnut
.Amanda Halverson, DVM grew up in the nearby town of Carlisle. She received her bachelor's degree from Trinity College and veterinary degree from Virginia-Maryland College of Veterinary Medicine. Her interests include dermatology, dentistry, preventative care and geriatric care.
Consulting Physicians
Orthopedic
Dr. Geoffrey N. Clark, DVM, Diplomat American College of Veterinary Surgeons
Dr. Clark is a 1986 graduate of The University of California - Davis School of Veterinary Medicine. He completed a thirteen month internship at the animal medical center in New York City and then completed a three year residency in small animal surgery at Tufts University School of Veterinary Medicine. Dr. Clark became board certified in surgery in 1992 when he successfully passed the American College of Veterinary Surgeons (ACVS) certifying examination. He was a staff surgeon for five years at the Animal Surgical Clinic of Seattle and also served as the chairman of the continuing education committee for the Seattle-King County Veterinary Medical Association.
Daria Smith, DVM, MS – Chief of Medicine – Dr. Smith is a graduate of Tufts University School of Veterinary Medicine. With over 25 years experience as a small animal Veterinarian. Dr. Smith has co-owned Lexington Veterinary Associates since 1994.
Alexis Messler, DVM, MS Originally from Brookline, MA, Dr. Messler earned both her Bachelor's and Master's degrees at Clark University. She spent several years in the human medical field before attending Tuft's Cummings School of Veterinary Medicine where she received her veterinary degree. Her primary interests include preventative care, surgery, and dentistry.
Giles Siddons, DVM, MS grew up on Long Island New York and has lived in the Boston Area since 2008. He received his masters from the University of Illinois at Urbana-Champaign and his veterinary degree from Tufts. His medical interest include surgery, diagnostic imaging and clinical pathology. Outside of the clinic he enjoys spending time with his family, listening to and playing music.
Kierra Walsh, DVM grew up in Billerica, MA and stayed in the area to earn her veterinary degree from Cummings School of Veterinary Medicine at Tufts University. With a background in zoo medicine, Dr. Walsh particularly loves seeing companion exotic and farm animals. Her other medical interests include nutrition and reproductive health, including responsible breeding practices. As a lifelong Golden Retriever fanatic, Dr. Walsh spends much of her free time hiking with, and throwing tennis balls for, her own golden, Hazelnut
.Amanda Halverson, DVM grew up in the nearby town of Carlisle. She received her bachelor's degree from Trinity College and veterinary degree from Virginia-Maryland College of Veterinary Medicine. Her interests include dermatology, dentistry, preventative care and geriatric care.
Consulting Physicians
Orthopedic
Dr. Geoffrey N. Clark, DVM, Diplomat American College of Veterinary Surgeons
Dr. Clark is a 1986 graduate of The University of California - Davis School of Veterinary Medicine. He completed a thirteen month internship at the animal medical center in New York City and then completed a three year residency in small animal surgery at Tufts University School of Veterinary Medicine. Dr. Clark became board certified in surgery in 1992 when he successfully passed the American College of Veterinary Surgeons (ACVS) certifying examination. He was a staff surgeon for five years at the Animal Surgical Clinic of Seattle and also served as the chairman of the continuing education committee for the Seattle-King County Veterinary Medical Association.