Memorial Sloan Kettering pathologist Reuben Jacob

Reuben P. Jacob, MD



Assistant Director, Cell Therapy and Transfusion Medicine

Clinical Expertise

Cell Therapy; Transfusion Medicine; Apheresis

Contact and Location

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Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offers many services, including screening, chemotherapy, and medical testing.

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About Me


MD, Wake Forest School of Medicine


Anatomic & Clinical Pathology - Emory University School of Medicine


Blood Banking & Transfusion Medicine - Stanford University School of Medicine

Board Certifications

Anatomic and Clinical Pathology; Blood Banking/Transfusion Medicine

I am a board-certified pathologist and a specialist in blood-banking and transfusion medicine. I am also focused on cellular therapy. This involves using collected human cells to treat cancers such as leukemia, lymphoma, and myeloma, as well as certain non-cancerous conditions where blood stem cell transplantation is an effective treatment.

As Assistant Director for the Cell Therapy Laboratory, my work entails supporting the rapidly growing clinical service as well as the apheresis and donor room sections at MSK. I assist in the medical and operational oversight to ensure that all manufacturing processes and procedures meet the most stringent regulatory and quality standards. In addition, I assist in ensuring effective communication between the clinical and laboratory services from the time of a cell collection to infusion of the final product into the patient.

As an assistant director in Transfusion Medicine I work to ensure the safety of donors and blood products collected in the donor room, as well as the safety of patients who receive transfusions at MSK. I am also continuously working to improve patient blood management. Finally, I supervise and oversee therapeutic apheresis, including therapeutic plasma exchange, cytapheresis, and extracorporeal photopheresis.

I am working on research collaborations with my colleagues within the Department of Laboratory Medicine and the Bone Marrow Transplant Service. Some of these projects include ways to optimize Hematopoietic Progenitor Cell (HPC) collection protocols as well as the use of flow cytometry analysis for better HPC product characterization.

Awards and Honors

  • Alpha Omega Alpha


Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.

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Clinical Trials

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Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.

You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.

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Doctors and faculty members often work with pharmaceutical, device, biotechnology, and life sciences companies, and other organizations outside of MSK, to find safe and effective cancer treatments, to improve patient care, and to educate the health care community.

MSK requires doctors and faculty members to report (“disclose”) the relationships and financial interests they have with external entities. As a commitment to transparency with our community, we make that information available to the public.

Reuben P. Jacob discloses the following relationships and financial interests:

No disclosures meeting criteria for time period

If you’re a patient at MSK and would like more information about your doctor’s external relationships, please talk with your doctor.

The information published here is for a specific annual disclosure period. There may be differences between information on this and other public sites as a result of different reporting periods and/or the various ways relationships and financial interests are categorized by organizations that publish such data.

This page and data include information for a specific MSK annual disclosure period (January 1, 2019 through disclosure submission in spring 2020). This data reflects interests that may or may not still exist. This data is updated annually.

Learn more about MSK’s COI policies here. For questions regarding MSK’s COI-related policies and procedures, email MSK’s Compliance Office at

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