2005 to present | Co-Director, COPD Program

1994 to present | Professor of Medicine

1992 to present | Associate Professor, Rehabilitation Medicine

1988 to present | Director, Pulmonary Rehabilitation (Medicine)

1993 to 2023 | Director, Respiratory Care

2007 to 2010 | Co-Director, COPD Translational Research Initiative

1993 to 2005 | Director, Emphysema Program

1996 to 1999 | Director, Adult Day Unit

1988 to 1994 | Associate Professor of Medicine

1992 to 1993 | Associate Director, Respiratory Care

1983 to 1988 | Associate Professor of Medicine

1980 to 1988 | Director, Respiratory Care Center

1980 to 1986 | Associate Director, Pulmonary Section

1982 to 1983 | Acting Director, Pulmonary Section

1976 to 1982 | Assistant Professor of Medicine

1978 to 1980 | Director, Clinical Services, Pulmonary Section

1976 to 1978 | Chief, Pulmonary Function Laboratory

1974 to 1975 | Assistant Professor of Medicine

1974 to 1975 | Chief, Clinical Studies Section (Appalachian Laboratory for Occupational Respiratory Disease)

1975 to 1976 | Fellow (Pulmonary Medicine)

1973 to 1974 | Fellow (Pulmonary Medicine)

1971 to 1973 | Resident (Internal Medicine)

1970 to 1971 | Intern (Medicine)

1968 to 1970 | MD

1964 to 1968 | BS