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Tuesday 9am - 7pm Friday 9am - 5pm Saturday 9am - 1am

Allergy, Asthma and Sinus Center of Long Island

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Brentwood, NY
Allergy, Asthma and Sinus Center of Long Island

Dr. Patel is an allergist & immunologist
serving both adult and pediatric patient.

Dr. Harsh*t Patel is a board-certified allergist and immunologist dedicated to providing expert care for both adults and children across Long Island. He sees patients weekly at six convenient locations, including Hicksville, Brentwood, Oceanside, Glen Oaks, Babylon, and Belle Harbor. The doctors, nurses, and staff at Allied Physicians Allergy, Asthma & Sinus Center of Long Island work collaborativ

ely to diagnose and treat a wide range of allergic and immunologic conditions—including allergies, asthma, chronic sinus issues, hives, eczema, persistent cough, and more.

03/20/2026

Eid Mubarak to all who celebrate! Wishing you and your loved ones a day filled with peace, joy, and sweet moments together. 🌙💫✨

03/17/2026

Happy St. Patrick’s Day! Wishing all our patients and families a day full of luck, laughter, and a little bit of Irish magic. Don't forget to wear green! 🌈🍀

03/16/2026

Stay ahead of seasonal allergies by visiting with your care team early. Scheduling an early season allergy appointment allows us to review your current treatment plan, adjust medications if needed, and help you stay ahead of symptoms before they interfere with daily life.

Check out Dr. Harsh*t Patel’s latest blog post on what patients should know about Seasonal Allergic Rhinitis, and reach out to an Allergy, Asthma and Sinus Center location to schedule your appointment before symptoms begin to flare.

Seasonal allergic rhinitis is a common condition that affects both adults and children when pollen levels rise during certain times of the year.

01/26/2026

Snowed in and soaking up the first BIG snow day of the winter? ❄️ Are you and your Allied Kids having just as much fun as we are?! Whether it is sledding, snowman building, or cozying up inside, drop your snow day photos in the comments below. We cannot wait to see all the winter fun! ☃️🏂

01/05/2026

Our footprint is growing! We are excited to start the year by welcoming Allied Physicians Westerleigh to the Allied Physicians Group family! Serving Staten Island and surrounding communities, they’re bringing the same exceptional care that Allied is known for. We’re thrilled to partner with Dr. Patterino and his team to continue delivering top-quality care to these communities and beyond. Welcome to the Allied family! 🧡🩶🎉

01/01/2026

Happy New Year! 🧡✨

Here’s to a year full of good health, happiness, and plenty of laughs. We can’t wait to care for you and your family in 2026!

12/25/2025

Wishing all of our patients a Merry Christmas and a happy and healthy holiday season. 🧡✨

12/16/2025

Happy Hanukkah! Wishing you eight nights filled with light warmth and meaningful moments with the people you love. May this season bring peace joy and hope to your home ✨

12/05/2025

With flu cases doubling on Long Island, Allied is here to help! 🧡 If your child develops symptoms, always call your Allied pediatrician before heading elsewhere. Same-day sick appointments are available!

Infectious disease experts have warned flu season may be severe.

11/27/2025

Happy Thanksgiving! 🦃🍁 We’re grateful for our wonderful patients, families, and staff who make our community so special every day. Wishing you a healthy, happy, and heart-filled holiday!

11/11/2025

This Veterans Day, we pause to express our heartfelt gratitude to all who have served and continue to serve. Your bravery inspires us all. 🇺🇸

10/01/2025

Wishing our patients, families, and community a meaningful Yom Kippur. May this day of reflection bring peace, health, and renewal. Wishing you an easy feast 🧡

Address

820 Suffolk Avenue
Brentwood, NY
11717

Opening Hours

Tuesday	9am - 7pm
Friday	9am - 5pm
Saturday	9am - 1am

Telephone

+15168226655

Website

http://www.allergyasthma.center/

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Our Story

Dr. Patel is a board-certified allergist and immunologist serving both adult and pediatric patients throughout the Long Island and Queens areas. He sees patients weekly at six offices located in Hicksville, Brentwood, Oceanside, Glen Oaks, Babylon, and Huntington Station. Dr. Patel and the rest of his team at the Allergy, Asthma and Sinus Center of Long Island work together to treat patients suffering from allergies, asthma, sinus problems, hives, eczema, cough and other aspects of allergic disease. Click "Read more" to learn more about Dr. Patel's qualifications and experience. CERTIFICATION Diplomat of the American Board of Internal Medicine Diplomat of the American Board of Allergy and Immunology PROFESSIONAL AFFILIATIONS American Medical Association Medical Society of State of New York Long Island Allergy and Asthma Society American Academy of Allergy , Asthma and Immunology American College of Allergy , Asthma and Immunology PROFESSIONAL EXPERIENCE & EDUCATION Dr. Harsh*t Patel is currently the primary caregiver at the Long Island Allergy Group. Dr. Patel is concurrently Clinical Instructor clinical instructor at NYC school of medicine and prior to that was a doctor in one of the most prestigious immunology practices in the state of New York. RESEARCH Sept 2002: WTC disaster and the effect on Chinese children with Asthma. A retrospective chart review with Dr. Anthony Szema, M.D. Assistant Professor. Department of Allergy and Clinical Immunology at SUNY HSC at Stony Brook. Dec, 2000 to Sep 2002: Research on effects of immunosuppresants on the maturation of dendritic cells with Dr. Amitabha Mazumder, M.D. Professor. Department of Hematology Oncology at SUNY HSC at Stony Brook. August 1995 and June 1992 to August 1994: Research on brain ischemia in the rat brain model with Dr. George C. Newman MD. Ph.D. Associate Professor. Department of Neurology at SUNY HSC at Stony Brook