- Professor, Tufts University School of Medicine
- Staff Physician, Divisions of Gastroenterology and Clinical Nutrition, Tufts Medical Center
Research focus: 1-carbon nutrients: modulation of carcinogenesis, Obesity: modulation of carcinogenesis, Colonic microbiome and carcinogenesis.
Post-doctoral Fellowships, 1987, Gastroenterology and Clinical Nutrition, University of Chicago Hospitals and Clinics
Internal Medicine Residency, 1984, University of Iowa Hospitals and Clinics
M.D., 1981, University of Chicago, Pritzker School of Medicine
B.S., 1977, University of Illinois