Walter M. Ryan, DO, is a practicing allergy and immunology specialist and internist in Massachusetts.
Ryan graduated from Southeastern University, North Miami Beach, Fla. He completed his residency in internal medicine at the University of Massachusetts Medical Center, Worcester, Mass. He then did his fellowship in Allergy and Immunology at the SUNY-Buffalo, Buffalo, NY.
Ryan is board certified by the American Board of Allergy and Immunology and the American Board of Internal Medicine.
He is a physician reviewer for Physicians' Review Network, Inc. an independent medical review organization.