NY Allergy & Sinus Centers Garden City

877 Stewart Ave #5,
Garden City, NY 11530

Phone (212) 686-6321
Fax (212) 686-6329

Office Hours

Tue 9:00am – 6:00pm
Thurs 9:00am – 6:00pm

About our Garden City location

Our Garden City clinic offers expert care in allergy, asthma, and sinus conditions to residents of Garden City, Hempstead, Mineola, and Westbury. Conveniently located near major roadways like the Meadowbrook State Parkway and Stewart Avenue, our office is easily accessible for patients across Nassau County. We offer ample on-site parking for patient convenience. Our board-certified allergists provide personalized, evidence-based treatments tailored to the unique environmental factors of Long Island, ensuring effective management of allergies and related conditions.

Morris Nejat, M.D.

Dr. Morris Nejat is a physician specializing in Adult and Pediatric Allergy and Immunology. He is also the owner and Chief Medical Officer of NY Allergy & Sinus Centers. He received his Bachelor’s degree in zoology from Drew University before completing medical school at New Jersey Medical School. He accomplished his residency in pediatrics at North Shore University Hospital-Cornell University Medical Center. Dr. Nejat also completed a fellowship at St-Lukes Roosevelt Hospital-Columbia University College of Physicians and Surgeons. Dr. Nejat sees common cases of allergy and sinus issues with congestion and chronic cough. He is board-certified with the American Board of Pediatrics.

Justin Rashtian, M.D.

Dr. Justin Rashtian is a board-certified physician who completed his Internal Medicine residency at Montefiore/Einstein in New York, followed by subspecialty training in Allergy & Immunology at National Jewish Health and the University of Colorado—one of the nation’s premier institutions in the field.

He cares for children and adults of all ages, addressing the full spectrum of allergic and immunologic conditions, including seasonal and environmental allergies, asthma, food allergies, eczema, hives and other skin reactions, contact allergies, drug allergies, and immune system deficiencies. His academic background includes laboratory research on peanut and tree nut allergies.
Dr. Rashtian takes time with each patient to listen closely, think creatively, and uncover the root causes of their symptoms. He is committed to asking “why,” carefully mapping out next steps, and creating accurate, personalized diagnoses and treatment plans. His approach blends the most up-to-date scientific knowledge with a true partnership with the patient—helping each person make informed choices that align with their individual goals and lifestyle.

Kristyl Cuenca-Sisko, PA-C

Kristyl Cuenca-Sisko has been working at NY Allergy and Sinus Centers since July of 2011. She has worked specifically in the field of allergy, asthma & immunology for the past decade. Kristyl holds a P.A. degree from the Wagner College/ Staten Island University Hospital Physician Assistant Program and is certified by the National Commission on Certification of Physician Assistants. Kristyl has also worked in pediatrics/adolescent health and internal medicine. She is an Allied Healthcare Member of the American Academy of Allergy, Asthma & Immunology, Fellow Member of the American Academy of Physician Assistants and a Sustaining Member of the New York State Society of Physician Assistants.