Mount Sinai Doctors-Long Island is committed to providing you with convenient, high-quality medical care. We offer more than 20 specialties. We also provide onsite radiology and laboratory services.

Our practice continues to grow. We are pleased to welcome Advanced Radiation Centers of New York (ARC) to our location. ARC provides skilled radiation oncology care for a variety of cancers. These include breast, prostate, brain, lung, head and neck, and gynecologic cancers. We offer the very newest technologies, including intensity modulated radiation therapy (IMRT). IMRT delivers high-dose radiation to a precise target. This approach protects healthy tissue and lessens side effects.

Our facility offers state-of-the-art equipment. Our staff are all highly skilled specialists. We provide exemplary primary care as well as a range of specialties, from allergy to urology. We also boast a comprehensive Women’s Center.

Our Greenlawn location offers a variety of convenient services, including extended hours, easy scheduling, ample parking, greeters, and welcoming waiting areas. We strive to make your visit as smooth as possible. We provide the excellent care of Mount Sinai right in your Suffolk County community. We are here for you and your family. We look forward to forming a relationship with you and want to keep you in the best possible health for the long term.

Provider Details

Allergy, Asthma, Immunology
Raymond Dattwyler, MD
Amy Korobow, MD
Kirk Sperber, MD 

Eric Arguelles, MD
Hachiro Nakamura, MD
Deborah Neumann, MD
Kenneth Walsh, MD

Todd Coven, MD
Jeanine Daly, MD
Alyssa Feiner, MD
Karen Green, MD
Felix Kuo, MD
Edmund Lee, MD

Heather Huribal, MD
John Tloczkowski, MD
Zimu Zheng, MD

Mejdi Ahmad, MD
Scott Ingber, MD

Phillip Schulman, MD
Pragati Tandon, MD

George Schmitz, MD

Sunil George, MD
Robert Yohannan, MD

Barbara Allis, MD
Alyssa Rehm, MD            

Donna Schneider, MD
Ava Sierecki, MD
Deborah Zitner, MD

David Hershberger, MD
Elizabeth Small, MD

Armand Abulencia, MD
Darwin Chen, MD
Edouard Kamhi, MD       

Pain Management
David Roufaiel, MD

Steven Brunner, MD
Anne Conrad, MD
Tami Fetzer, CPNP, IBLCE
Michael Grosso, MD
Nina Tomei, MD
Kathrynne Yland, MD

Pediatric Gastroenterology
Joanne Lai , MD

Michael Katz, MD

Primary Care/ Internal Medicine
Jonathan Boxer, MD
Jessica Caporuscio, MD
Aniqa Gorgani, MD
Donna Losco, MD
Maya Moorley, MD
Mark Singer, MD
Masooma Sheikh, MD
Deborah Weiss, MD       

Pulmonary Medicine
Peter DeLuca, MD
William Knaupp, MD
Michael Prodromou, MD
Lakshmi Yella, MD           

Michael Benanti, MD
Thomas Mannino, MD
Elham Safaie, MD            

Harley Cohen, MD
Peter Gorevic, MD

William Martin, MD

Natan Davoudzadeh, MD
Christopher DiBlasio, MD
Ferdinand DiBlasio, MD
Semyon Gurgov, MD

Robin Arias, PA

Practice Information

Mount Sinai Doctors-Long Island
5 Cuba Hill Road
Greenlawn, NY 11740

Phone: 631-628-5000


Advanced Radiation Centers of New York
5 Cuba Hill Road, Suite 400
Greenlawn, NY 11740
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