About Us

We’re proud to be your preferred Nashua veterinarian!

At Clark Veterinary Hospital, we take pride in delivering personalized, compassionate care to our patients and their owners in Nashua, NH, and the surrounding areas. Our professional team strives to provide a comfortable environment for our patients and clients, and we want everyone, either two legged or four, to feel welcome as soon as they enter our veterinary clinic.

Our hospital opened its doors in 1928, and since then, we have fostered the neighborly approach to veterinary medicine as we strive to provide personal attention to every pet. Whether your visit is for routine wellness care or emergency care, each and every one of our patients is treated as if they were our own. Your pet’s health and well-being are our primary concern. After all, we’re not just another veterinary clinic; we’re also your neighbors.

Clark Veterinary Hospital offers a wide range of medical services and surgeries for dogs and cats in Nashua, NH. We are located at 40 Webster Street in Nashua, and we have ample space for parking within a safe, low traffic area for your pet.

Proud to be AAHA Accredited!

What does it mean to be an Accredited Member of the American Animal Hospital Association (AAHA)? AAHA establishes exacting standards for veterinary practices and fosters professionalism and excellence in all phases of hospital operations. We voluntarily meet these high standards so we can provide you with superior service each and every time you visit.

Dr. Corynne Orzech

Dr. Corynne Orzech

Chief of Staff, DVM

Education: Franklin & Marshall College and Tufts University

Pets: 2 Cats, Madison and Dunkin

Dr. Corynne Orzech, a Massachusetts native, received her B.A. degree in biochemistry and molecular biology in 2004, with a minor in Asian studies, from Franklin & Marshall College in Lancaster, Pennsylvania. Dr. Orzech was on the Deans list and participated in a number of clubs and activities, in addition to completing her senior thesis in developmental biology. Following college, she lived and worked in Philadelphia, prior to returning to Massachusetts for veterinary school.

Dr. Orzech graduated from the Cummings School of Veterinary Medicine at Tufts University in 2010, where she was an active member of the Student AVMA chapter and worked as an emergency and critical care technician in the school’s veterinary hospital. Following graduation, she completed a year-long internship in small animal medicine and surgery at the MSPCA-Angell Animal Medical Center in Boston, Massachusetts.

Dr. Orzech is a member of the AVMA and Massachusetts VMA. As a general practitioner, she has strong interests in internal medicine, emergency care, and husbandry.

Dr. Orzech enjoys cooking and relaxing with friends, as well as yoga, hiking, and knitting. She also enjoys spending free time with her husband and two Siamese mix kitties, “Madison” and “Dunkin.”

Dr. Yvonne Lemieux


Education: Tufts Cummings School of Veterinary Medicine and Suffolk University

Pets: Four cats: Naru, Rozzie, Bo Peep and Luna

Dr. Lemieux, a Massachusetts native, graduated Summa Cum Laude with a B.S. in Biology from Suffolk University, Boston in 2008. She was involved in several science groups on campus and was on the Dean’s List all four years while in attendance at Suffolk. Dr. Lemieux worked as a veterinary assistant in college at Dr. Wolf’s Animal Medical Center in Dedham, Massachusetts and completed several wildlife volunteer programs on Boston’s South Shore prior to being admitted to veterinary school.

Dr. Lemieux graduated with honors from the Cummings School of Veterinary Medicine in 2013. She was inducted into Phi Zeta, the veterinary honor society, prior to graduation. She was involved in the student chapter of the American Animal Hospital Association and was an anatomy teaching assistant during her second year.

Dr. Lemieux is an active member of the American Veterinary Medical Association and the American Association of Feline Practitioners. She is committed to high-quality medical care, preventive medicine and empowering clients to make decisions that best suit their pets.

Dr. Lemieux enjoys cooking and spending time with friends in addition to traveling and photography. She also enjoys spending time with her husband, son, and kitties.

Ready to get started?

Contact Clark Veterinary Hospital at 603-882-2571 to schedule your pet’s appointment today or request an appointment online using our website.