Sebastian A. Mayer, MD

Medical Oncology (Board Certified, Primary Specialty)
Hematology (Board Certified, Primary Specialty)
Languages: French, German
Office Phone: (212) 746-2119



Research Associate, Department of Nuclear Medicine, University of Vienna, 1998-2000

Residency in Internal Medicine, St. Luke’s Hospital Center,  New York, 2000-2003

Fellowship in Hematology/Oncology, Mt. Sinai Medical Center, New York,  2003-2006

Fellowship in Stem Cell Transplantation, Memorial Sloan Kettering Cancer Center, New York,  2007-2008


Sebastian Mayer has been an attending physician on the Blood and Marrow Transplantation service at Weill Cornell Medical Center since 2010, after working on the Leukemia Service for two years.

A native of Austria, he earned his MD at the University of Vienna with a Doctoral thesis in experimental nuclear medicine. After two years of nuclear medicine research in Vienna, Dr. Mayer completed his Internal Medicine residency at St. Luke’s Roosevelt Hospital center in New York. During that time, he participated in research projects on the molecular biology of lymphoma at Mount Sinai Medical Center and Albert Einstein College of Medicine.

After a fellowship in Hematology/Oncology and a subsequent faculty appointment at Mount Sinai Medical Center, he completed a fellowship in Stem Cell Transplantation at Memorial Sloan Kettering Cancer Center.

His main research interests lie in the reversal of chemotherapy resistance in leukemia before stem cell transplant, specifically for patients with a high risk of disease recurrence. He also is an active investigator in the treatment of graft versus host disease, a feared complication of stem cell transplant, as well as the prevention and management of transplant rejection.

Dr. Mayer greatly enjoys the close interaction with his patients and also takes an active role in the education of junior physicians and medical students.

Area of Expertise

Please contact the doctor's office to verify that your insurance is accepted.

Aetna [HMO, Medicare, PPO]

Aetna [Weill Cornell Employee Plan]

Affinity [Access (Exchange)]

Affinity [HMO]


Emblem Select Care


Empire Blue Cross Blue Shield [Blue Priority, Child Health Plus, EPO, HMO, Mediblue (Senior), Pathway (Exchange), PPO]

Empire Blue Cross Blue Shield [Pathway Enhanced]

Empire Blue Cross Blue Shield HealthPlus

Fidelis Care





Oxford Health Plans [Freedom, Liberty, Medicare Advantage]

Oxford Health Plans [Metro/Core/Charter (HMO)]


Rockefeller University - CoreSource

United Empire

UnitedHealthcare [Community Plan, Compass (Exchange), EPO, HMO, Medicare, POS, PPO]



1999 University of Vienna Medical School

Residency: 2003 St. Luke's-Roosevelt Hospital Center

Fellowship: 2006 Mount Sinai Medical Center

Fellowship: 2008 Memorial Sloan-Kettering Cancer Center


520 East 70th Street Starr 3
New York, NY 10021

Phone: (212) 746-2119

Fax: (212) 746-6678

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Assistant Professor of Medicine at Weill Cornell Medical College, Cornell Univ