Waltham - Mr. Michael F. Krawczyk of Waltham died Monday February 27, 2006 in his home. He was 55. Born in Milford, a son of Francis and Marian (Knapik) Krawczyk of North Smithfield, Rhode Island, Michael was a registered nurse for over twenty years at Boston Medical Center. He was also an avid Red Sox Fan. Michael is survived by his wife of twenty-three years, Catherine R. (Ramos) Krawczyk, one daughter, Chelsea L. Krawczyk of Waltham, his mother-in-law and father-in-law, Shirley and William Ramos of Middleboro, and several nieces and nephews. The Funeral will be held Friday at 10 a.m. from The Joyce Funeral Home, 245 Main Street (Rte.20), Waltham, followed by a Funeral Mass in Our Lady Comforter of the Afflicted Church, 880 Trapelo Road, Waltham at 11 a.m. Burial will be private. Visiting hours will be held Thursday from 4 to 8 p.m. Memorial donations may be made to Hurricane Katrina Relief c/o American Red Cross, 2025 E. Street, N.W., Washington, D.C. 20006.