1. Senior Research Associate (1997–present) and Originating Director (1987–1997), The North American Malignant Hyperthermia Registry; Associate Professor of Anesthesiology, Penn State College of Medicine.
2. Director (2000–present), The North American Malignant Hyperthermia Registry of the Malignant Hyperthermia Association of the United States, Professor of Anesthesiology, Children's Hospital and the University of Pittsburgh, Pittsburgh, Pennsylvania.
3. Director (1997–1999), The North American Malignant Hyperthermia Registry of the Malignant Hyperthermia Association of the United States, the Malignant Hyperthermia Association of the United States Hotline Consultant, Olympia Anesthesia Associates, Olympia, Washington.
4. First Chairman (1987–1992), The North American Malignant Hyperthermia Registry, Director Emeritus of the UC Davis and Mayo Clinic Malignant Hyperthermia Biopsy Centers, Professor Emeritus of Anesthesiology, University of California at Davis, Davis, California.
5. Biostatistician of Public Health Sciences, Penn State College of Medicine.