Denomination: Roman Catholic
Junior statistician bioeffects division National Center Radiological Health, Rockville, Maryland, 1967-1972. Chief statistics section Office Radiation Programs Environmental Protection Agency, Washington, 1972-1973. Senior statistician epidemiological studies branch Bureau Radiological Health-Food and Drug Administration, Rockville, Maryland, 1973-1979, chief statistics section, 1979-1983.
Chief ionizing rad. and statistical branch Food and Drug Administration, 1982-1984, chief statistics branch Center Devices and Radiological Health, 1984-1985, director biometric science division, 1985-1994. Vice president for statistical services C.L. McIntosh and Associates, Inc., 1994—2002. President R.P. Chiacchierini & Associates, Rockville, since 2002.
Chief scientist United States Public Health Service Commissioned Corps, Rockville, 1987-1991. Chair UPSHS Epidemiological Training Commission, Bethesda, Maryland, 1989-1992.