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Personalized Veterinary Preventive Care
Pet Wellness & Sickness Exams
Vaccinations
Flea & Tick Prevention
Spay & Neuter
Blood, Urine, and Fecal Testing
Animals We See: Dogs, Cats
Neighborhoods We Serve: Nashua, Greely Park
Hours
Monday - Tuesday:
8:00am - 6:00pm
Wednesday:
10:00am - 8:00pm
Thursday - Friday:
8:00am - 6:00pm
Closed Now
Quick Links
At Clark Veterinary Hospital, we offer primary care services for dogs and cats in the city of Nashua. We specialize in internal medicine and surgery for small animals. We are proud to be AAHA accredited.
Whether your visit is for routine wellness care or emergency care, each and every one of our patients are treated as if they were our own. Your pet’s health and well-being are our primary concerns. After all, we’re not just another veterinary clinic, we’re also your neighbors.
We are proud to offer ultrasounds and specialty surgery in-house.
Care for your pets with these limited-time offers.
Current Promotions
Until May 31, we are offering a FREE wellness exam to new clients! Mention the coupon code FREE100 when scheduling your pet's wellness exam appointment at our practice. This offer is available at participating locations, limited to one per household, and cannot be combined with any other offers or redeemed for cash. Valid for scheduled wellness appointments only and does not apply to illness exams, subject to determination by the veterinarian. This offer is exclusively for new clients and clinic fees will apply. Expires May 31, 2025.
Parasites can kill—But you can protect! Now through June 30, 2025, save on vital care for your pet.
ProHeart® 12 (moxidectin) for dogs: 1 dose, 1 year of heartworm protectionxs
Simparica® (sarolaner) chewable for dogs: 1 chewable, 35 days of flea-&-tick protection
Revolution® Plus (selamectin and sarolaner topical solution) for cats: 1 application, 1 month of protection
Simparica TRIO® (sarolaner, moxidectin, and pyrantel chewable tablets) for dogs :1 chewable, triple protection
*Valid 4/1 – 6/30/2025. In-hospital purchase only. Cannot be combined with other promotions or discounts except for Thrive Plus member discounts and other parasite treatment related offers and promotions. Discount applies to ProHeart 12, Simparica 6-packs, Simparica Trio 6-packs, and Revolution Plus 6-packs only. Availability of products may vary. While supplies last. The offer does not include the cost of additional services, such as exams or diagnostic tests, that may be needed to fulfill a parasiticide prescription. See IMPORTANT SAFETY INFORMATION and full prescribing information at ProHeart12PI.com; SimparicaPI.com; RevolutionPlusPI.com; and SimparicaTrioPI.com.
Regular wellness exams allow us to catch underlying health problems early, provide consistent preventative care, and support your pet’s overall health and well-being.
Our veterinarians are skilled in diagnosing common problems that affect our pets like vomiting, itching, lumps, limping, and more.
Vaccines are essential for preventive care and can increase the chances of a longer, happier life for pets. Ensuring that pets are consistently up to date with their vaccinations can help prevent contracting disease or help lessen the severity of symptoms if a disease is contracted.
Another key component of helping to maintain your pet’s health and happiness is having them on reliable, consistent heartworm preventative.
Heartworm disease is serious and potentially fatal to our dogs and cats. Heartworms are spread by mosquito bites and can grow up to a foot long, living in the heart and lungs of our beloved pets.
Fleas can cause itchy skin, skin infections, and spread tapeworms. Ticks can carry disease such as Lyme Disease, Ehrlichiosis, and more.
From routine cleanings to tooth extractions, the Thrive Pet Healthcare network of Primary Care veterinarians and Dental Specialists is here to keep your pet's smile fresh! Our general practices can take care of everyday dental maintenance with outstanding regular check-ins, cleanings, and basic surgeries.
Meanwhile, our specialty veterinarians are prepared to handle more complex or chronic dental cases like a root abscess, jaw fracture, abnormal tooth formation, or advanced periodontal disease. These doctors are highly trained within the field of veterinary dentistry and have access to specialized equipment, typically unavailable at primary care clinics.
Unless you intend to breed, we recommend having pets spayed or neutered. Pets that have been spayed or neutered tend to live longer and have healthier lives.
It's hard to provide care without knowing the root of what is ailing your pet, which is why diagnostic testing is so important. Diagnostic testing can include laboratory testing (blood, urine, and fecal) and diagnostic imaging like X–rays, CT, MRI, and ultrasound.
We will be by your side during this time of need to offer both medical assistance and emotional support.
The occasional taps, scrapes, and scratches that happen when playing with your pet means it's time for a trip to your local veterinarian or boarding facility! Trimming your pet's nails is a healthy part of their life, and can lead to greater comfort in everyday activity.
Surgery covers a vast sub-sect of veterinary medicine, from routine spay and neuter to complex orthopedic and soft tissue procedures. Within our Thrive Pet Healthcare network, you can access surgical services on both the primary care and specialty level so whatever your pet’s surgical needs, our trusted veterinarians and surgical specialists are here for you.
Our community’s outstanding orthopedic veterinarians and surgeons use breakthrough research within the field to implement advanced therapies, such as CrCL surgeries like TPLO surgery, fracture repair, and innovative devices. These are all designed to help improve or conserve your pet’s mobility following traumatic accident, illness, or age-related condition.
Pet owners commonly refer to CrCL surgery as an ACL surgery, however CrCL surgery is the medically accurate term. ACL surgery is the human equivalent treatment.
Microchip implants are about the size of a grain of rice and are administered like a vaccine with potentially no pain to little pain for your pet. This significantly increases the chances of a reunion should they ever go missing.
DVM, FFCP
Dr. Sarah Sullivan is a lifelong New England resident - she grew up in Metrowest Boston and graduated with a Bachelor of Science degree in Materials Science and Engineering from MIT. She graduated with a Doctor in Veterinary Medicine degree from Tufts University School of Veterinary Medicine, and then went on to complete a rotating one-year internship in small animal medicine and surgery at Veterinary Specialists of Connecticut in West Hartford, Connecticut. She worked as an associate veterinarian at Hudson Animal Hospital for 10 1/2 years before becoming the medical director at Clark Veterinary Hospital in 2020. Dr. Sullivan enjoys all aspects of general practice and the daily challenges it provides, and takes pride in providing the highest quality care for all furry four-legged family members. She lives in southern New Hampshire with her husband, her dog Maddie, and her cat Ozzie. When she’s not working, Dr. Sullivan enjoys hiking with her dog, snowshoeing, snowboarding, cooking, cheering on the Patriots, Bruins, and Red Sox, and playing word games. She has also done volunteer work with an organization doing trail work in the White Mountains as a trail adopter since 2004.
DVM
Dr. Snedaker grew up in Nashua, knowing from the age of 6 that she wanted to be a veterinarian. She attended the University of NH and received the University Women’s Award in 2000. She obtained her veterinary degree from the University of Pennsylvania in 2005. She has been a small animal practitioner since then and enjoys practicing preventive medicine, acute care, soft tissue surgery, and dentistry. Dr. Snedaker resides in Wilton with her husband, a musician and songwriter. Their two daughters attend Pine Hill Waldorf School, where Dr. Snedaker is an active Parent Association member. Their household also includes a dog, four cats, chickens, guinea fowl, a leopard gecko, a Russian tortoise, and fish.
Membership Benefits That Go Beyond
Thrive Plus empowers you to provide the best possible care for your pet by making veterinary services more cost-effective and accessible.
42.775828
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