5 Rheumatology Resources Every Internal Medicine Resident Should Know Sergio M. Maldonado-Chaar, MD | Issue: September 2025 | September 8, 2025 Sergio M. Maldonado-Chaar, MD, is a third-year internal medicine resident completing a dual pathway in rheumatology and medical education at the University of Miami and Jackson Health System Residency Program. Page: 1 2 3 | Single Page Share: