Animal Hospital of Nesconset

Animal Hospital of Nesconset This well established small animal practice is dedicated to the care and well-being of its patients. Mary L.

Leister, DVM, is a veterinarian with twenty seven years of veterinary experience. Raised in Stony Brook, she studied veterinary medicine at the prestigious Cornell University College of Veterinary Medicine. Experience includes spending seven years practicing with a leading veterinary practice in Bellport, New York; twelve years at Nesconset Animal Hospital; per diem work at Mount Sinai Animal Hospital for the past eight years; and two years serving the community at the Brookhaven Town Shelter Spay and Neuter Clinic.

We love pet names that correlate with snacks!Can you guess their names? 🤪🐾🫶🏼❤️
11/07/2025

We love pet names that correlate with snacks!
Can you guess their names? 🤪🐾🫶🏼❤️

HAPPY HALLOWEEN 🎃Here’s some fun staff pet photos in costumes, we’d love to see yours!🐾Please have a safe, fun Halloween...
10/31/2025

HAPPY HALLOWEEN 🎃

Here’s some fun staff pet photos in costumes, we’d love to see yours!🐾
Please have a safe, fun Halloween & remember… NO chocolate and candy for our furry ones!🤪

What is a Veterinary Technician?Pawsitively the BEST-🐾A veterinary technician is an animal nurse. They are often the Vet...
10/17/2025

What is a Veterinary Technician?

Pawsitively the BEST-🐾
A veterinary technician is an animal nurse.
They are often the Veterinarians right hand man, the voice of the animals that are hospitalized, the anesthesiologist during surgery’s, the phlebotomist, the radiology technician, a surgical assistant, the dog wrangler & cat catcher, the patient lunch lady, the one that holds the paws even in the toughest times.

They are super woman. They are the heart & soul of a veterinary staff.

This week during national ✨Veterinary Technician Week✨we’d like to honor Veterinary Technician Kristen, aspiring technicians Darlene & Jalyn, and our wonderful assistant Denise for all their hard work, dedication, and LOVE towards your wonderful pets and our purrrfect patients ❤️

Happiest of birthdays (10/12) to our Queen 👑🐾To the best veterinarian, boss, & person,We wish you nothing but the BEST t...
10/13/2025

Happiest of birthdays (10/12) to our Queen 👑🐾

To the best veterinarian, boss, & person,
We wish you nothing but the BEST this upcoming year filled with love, happiness, health and everything in between! WE LOVE YOU DR. L!!!❤️

PSA: The office will be CLOSED from Saturday 8/30 through Monday 9/1. We will continue normal business hours starting on...
08/30/2025

PSA: The office will be CLOSED from Saturday 8/30 through Monday 9/1. We will continue normal business hours starting on Tuesday 9/2!

We hope everyone has a safe and fun Labor Day weekend ❤️🤍💙

🥰🐾
07/24/2025

🥰🐾

Saturday we celebrated the “E” Litter with a fun- loving Puppy Shower Pawty 🤍🐾We can’t wait to watch these beautiful Hov...
07/21/2025

Saturday we celebrated the “E” Litter with a fun- loving Puppy Shower Pawty 🤍🐾

We can’t wait to watch these beautiful Hovawart babys grow up in this wonderful show line like their mama!

If you can guess right- Dr. Leister is keeping the black female she wished for. Welcome home Echo girl🥰

PSA:As the holiday is quickly approaching we would like to remind all clients we will be CLOSED Friday 7/4 and Saturday ...
07/02/2025

PSA:
As the holiday is quickly approaching we would like to remind all clients we will be CLOSED Friday 7/4 and Saturday 7/5 for the Fourth of July.
We will return to normal business hours on Monday 7/7.
Thank you!

Animal Hospital of Nesconset

Happy Memorial Day to all of our clients & patients. We hope you have a fun, safe day! *We will return normal business h...
05/26/2025

Happy Memorial Day to all of our clients & patients. We hope you have a fun, safe day!
*We will return normal business hours tomorrow at 9 am*

Something I think we can all agree on is that Dr Leister is the BEST! Here she is showing an aspiring veterinarian, 5 ye...
05/07/2025

Something I think we can all agree on is that Dr Leister is the BEST!
Here she is showing an aspiring veterinarian, 5 year old Grayson how to do a physical exam on his dog Miley🤍
Great job Grayson!!!

Looking forward to you working here in the future years 😉🐾🤍

PSA: CLOSED SATURDAY MAY 3, 2025If medication refills are needed, please plan accordingly.The Animal Hospital of Nescons...
05/01/2025

PSA: CLOSED SATURDAY MAY 3, 2025
If medication refills are needed, please plan accordingly.

The Animal Hospital of Nesconset staff will be attending Kristen’s bridal shower as their love story started right here on the grounds of the Animal Hospital of Nesconset all because of this beautiful Saint Bernard, Bonnie🤍

Josie, Duke and Holly posing for Easter 🤍🌸
04/29/2025

Josie, Duke and Holly posing for Easter 🤍🌸

Address

189 Terry Road
Smithtown, NY
11787

Opening Hours

Monday 9am - 6pm
Tuesday 9am - 6pm
Wednesday 9am - 5pm
Thursday 9am - 6pm
Friday 9am - 6pm
Saturday 9am - 1pm

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Mary L. Leister, DVM, is a veterinarian with twenty years plus of veterinary experience. Raised in Stony Brook, she studied veterinary medicine at the prestigious Cornell University College of Veterinary Medicine. Experience includes spending seven years practicing with a leading veterinary practice in Bellport, New York; twelve years at Nesconset Animal Hospital; per diem work at Mount Sinai Animal Hospital for the past eight years; and two years serving the community at the Brookhaven Town Shelter Spay and Neuter Clinic.