Peter Maslak, MD

Pioneering Hematology/Oncology Expert Joins Roswell Park in Vice Chair Role

Dr. Peter Maslak to head Clinical Affairs, Clinical Flow Cytometry

  • Dr. Maslak brings more than 25 years of experience to position
  • Has pioneered cell-based treatments for leukemia
  • Comes to Roswell Park from Memorial Sloan Kettering in NYC

BUFFALO, N.Y. — Underscoring Roswell Park Comprehensive Cancer Center’s ability to attract top clinical and research talent, Deputy Director Renier Brentjens, MD, PhD, has named physician-scientist Peter Maslak, MD, as Vice Chair of Clinical Affairs and Technical Director of the Clinical Flow Cytometry Laboratory.

A pioneer of cell-based treatments for leukemia, Dr. Maslak has been instrumental in conducting and analyzing multiple immune-based clinical trials, particularly those involving new approaches to the disease. He brings more than two decades of experience in clinical flow cytometry, immunophenotyping, and immune monitoring.

Dr. Maslak joins Roswell Park from another National Cancer Institute-designated center, Memorial Sloan Kettering Cancer Center in New York City. There, he was Chief of the Immunology Laboratory Service in the Department of Pathology and Laboratory Medicine and Attending Physician on the Leukemia Service in the Department of Medicine.

“We’re extraordinarily pleased to have Dr. Maslak join our team at Roswell Park,” says Dr. Brentjens, who worked closely with him at Memorial Sloan Kettering. “His contributions will serve as a critical piece in the preclinical and clinical development of cell-based therapies at Roswell Park. We are proud to be at the forefront of research and clinical practice with these types of therapies, which are the next generation of treatments for cancer patients.”

Dr. Maslak earned his medical degree from Mount Sinai School of Medicine. His postdoctoral training included internship and residency in internal medicine with the University of Michigan Medical Center, fellowships in hematology/oncology, medicine, and leukemia cell biology with Memorial Sloan Kettering Cancer Center and Weill Cornell Medical College.


Roswell Park Comprehensive Cancer Center is a community united by the drive to eliminate cancer’s grip on humanity by unlocking its secrets through personalized approaches and unleashing the healing power of hope. Founded by Dr. Roswell Park in 1898, it is the only National Cancer Institute-designated comprehensive cancer center in Upstate New York. Learn more at, or contact us at 1-800-ROSWELL (1-800-767-9355) or

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