Dr. Lawrence Afrin's profile at the AIM Center for Personalized Medicine in Purchase, New York describes him as a hematology/oncology specialist with deep focus on mast cell disease, particularly Mast Cell Activation Syndrome (MCAS). He joined the AIM Center in 2017 alongside Dr. Tania Dempsey to advance care, research, and education in mast cell disease. Earlier in his career he served on the Hematology/Oncology faculty at the Medical University of South Carolina (1995-2014), where he directed the fellowship training program and Myeloproliferative Neoplasms Clinical Trials Program, then transitioned to the University of Minnesota (2014-2017) before joining AIM. He authored the first comprehensive book on MCAS (2016), 73 peer-reviewed articles (half as first author), and has delivered nearly 200 invited presentations globally on mast cell disease.