Physician Photo

Robert Stephen Makar, MD, PhD

Assistant in Pathology, Massachusetts General Hospital

Associate Director, Blood Transfusion Service

Assistant Professor of Pathology, Harvard Medical School

Dr. Makar further specializes in cellular therapies, the diagnosis and treatment of autoimmune cytopenias, and transfusion complications related to HLA alloimmunization.

Department of Pathology
Clinical Interests
Transfusion medicine
Boston: Massachusetts General Hospital
Medical Education
MD, PhD, University of Texas Southwestern Medical School
Residency, Massachusetts General Hospital
Fellowship, Massachusetts General Hospital
Board Certifications
Clinical Pathology, American Board of Pathology
Blood Banking & Transfusion Medicine, American Board of Pathology
Patient Age Group
Accepting New Patients
Accepting New Patients


Dr. Makar is board-certified in transfusion medicine and serves as the associate director of the Blood Transfusion Service (BTS). He oversees outpatient and clinical apheresis services for the BTS, including the collection of peripheral blood hematopoietic stem cells from mobilized patients and donors, extracorporeal photopheresis to treat chronic graft-versus-host disease, and therapeutic plasma exchange to treat various autoimmune diseases. His clinical interests include cellular therapies such as hematopoietic stem cell transplantation, the diagnosis and treatment of autoimmune cytopenias, and transfusion complications related to HLA alloimmunization such as transfusion-related acute lung injury and refractoriness to platelet transfusion.  He is a respected teacher in clinical pathology, having twice received the Clinical Pathology Excellence in Teaching Award.


Research Interests include:

  • Immune mechanisms underlying HLA and RBC alloimmunization in response to blood transfusion
  • Screening strategies to reduce the risk of transfusion-related acute lung injury (TRALI)
  • Application of cellular immunotherapies to treat autoimmune and malignant diseases

Pathology Associates
55 Fruit Street
Boston, MA 02114-2696

Phone: 617-724-6353
Fax: 617-726-6832