Shunichi Nakagawa, MD

Dr. Callahan is an Assistant Professor of Medicine at Columbia University Medical Center. She received her medical degree from Rush Medical College and completed residency training in Internal Medicine at Tulane University School of Medicine. She completed her Hospice and Palliative Medicine fellowship at the University of Pittsburgh Medical Center in 2018. She also received a Master’s Degree in Medical Education from the University of Pittsburgh. Dr. Callahan's clinical time is spent on the inpatient palliative care service at NewYork-Presbyterian/Columbia University Irving Medical Center and providing outpatient palliative care services at Herbert Irving Cancer Center. Her academic interests are focused on teaching communication and primary palliative care skills.

Dr. Tanhehco is Associate Professor of Pathology and Cell Biology at Columbia University Irving Medical Center/NewYork-Presbyterian Hospital. She has been a faculty member and attending physician in the Division of Transfusion Medicine and Cellular Therapy since 2012. She is the Director of the Cellular Therapy Laboratory and Assistant Director of Transfusion Medicine at NewYork-Presbyterian Hospital. Dr. Tanhehco received her BA degree in Biological Sciences with concentrations in Microbiology and Molecular and Cell Biology from Cornell University in 1999. She then pursued graduate studies at Johns Hopkins University School of Medicine where she earned her PhD degree in Viral Oncology in 2004. Her interest in clinical care and medicine led her to the University of Pittsburgh where she obtained her MD degree in 2008. She subsequently pursued residency training in Clinical Pathology (2008-2011) and fellowship training in Blood Banking/Transfusion Medicine (2011-2012) at the Hospital of the University of Pennsylvania. While at the University of Pennsylvania, she also obtained a MS degree in Translational Research (2010-2012). She is board certified by the American Board of Pathology in both Clinical Pathology and Blood Banking/Transfusion Medicine. Dr. Tanhehco’s clinical and research interests focus on cellular and gene therapies for malignant and non-malignant disease particularly sickle cell disease. She is interested in strategies to optimize patients and procedures for apheresis collections of mononuclear cells and hematopoietic progenitor cells to minimize patient adverse events and improve cell yields for drug product manufacturing. She is also interested in methods to improve processing and cryopreservation of mononuclear cell and peripheral blood stem cell products. Dr. Tanhehco is an active member of several professional societies including the Association for the Advancement of Blood and Biotherapies, American Society for Apheresis, International Society for Cell and Gene Therapy, College of American Pathologists, and American Society for Clinical Pathology. She has authored over 50 peer-reviewed publications.

Dr. Haffey received his BA in Literature and Literary Studies in University of Colorado in 2002. He then obtained his DO degree in West Virginia School of Osteopathic Medicine in 2016. He completed his internship at Stony Brook Medicine-Southampton Hospital, followed by a residency in Physical Medicine and Rehabilitation at NewYork-Presbyterian Hospital/Columbia/Cornell in 2020. After his Fellowship focusing on Pain Medicine, Dr. Haffey joined Columbia University Medical Center in May 2021 and Weill Cornell Medicine in February 2025 up to present.