Dr. Miniter grew up in Clare and in Dublin, Ireland. He attended medical school at The National University of Ireland, University College Dublin and graduated in 1970.

Dr. Miniter interned at the Mater Misericordiae Hospital, Dublin and then moved to the United States and completed an Internal Medicine Internship/Residency program at the Hospitals of the State University of New York at Buffalo NY (E.J. Meyer Memorial and Buffalo General Hospitals). Following this, hemoved to Boston, MA as a fellow in Rheumatology and Clinical Immunology at Tufts New England Medical Center.

Dr. Miniter is board certified by the American Board of Internal Medicine in both Internal Medicine and Rheumatology.

Dr. Miniter was Assistant Professor of Medicine at Tufts University/New England Medical Center from 1977 to 1979, when he moved to Cape Cod, Massachusetts, where he started the first Rheumatology practice in that area. He was on the staff at Cape Cod Hospital, Hyannis and served as Chief of the Department of Medicine before leaving Cape Cod in 1991. At that time he moved to the Quad Cities, originally in Group Practice. He formed Quad City Rheumatology, S.C. in 2003.

Dr. Miniter has staff privileges at Trinity Medical Center and at Genesis Medical Center, Illini Campus.

Dr. Miniter has been elected as a Fellow of the American College of Rheumatology and also of the American College of Physicians.