B.A., University of California San Diego, La Jolla, California, 1982.
M.D./Ph.D., NIH Medical Scientist Training Program, Yale School of Medicine/Yale Graduate School, New Haven, Connecticut, 1990.

Residency/Fellowship: Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts (internal medicine), E. Braunwald Research-Residency “Hemi-Doc” Program, 1991-1994; (cardiovascular diseases), 1994-1997; Harvard Medical School, Boston, Massachusetts (postdoctoral research fellowship, cardiovascular medicine), 1991-1997.

Certified by the American Board of Internal Medicine in Internal Medicine (retired) and Cardiovascular Disease (active).

Cape Code Hospital, Hyannis and Falmouth Hospital, Falmouth, Massachusetts, staff physician, Cardiology, 1997-2003; Brigham and Women's Hospital, Boston, Massachusetts, instructor, Cardiovascular Medicine, 1997-2003; associate physician, Internal Medicine, 1997-2003; VA Boston Healthcare System (VABHS), West Roxbury, Massachusetts, staff physician, Division of Cardiology, 1997-2003; director, Coronary Care Unit, 2002-2003; West Roxbury VA Medical Center, Boston, Massachusetts, academic attending physician, 1997-2003; Cape Cod Hospital, Brigham and Women's Hospital, staff physician, 2000-2003; University of Texas Southwestern Medical Center, Dallas, Texas, faculty physician, Division of Cardiology, 2003-2019; Parkland Memorial Hospital, University of Texas Southwestern Medical Center, Dallas, Texas, clinical attending staff, 2003-2019; Assistant Professor, Division of Cardiology, 2003-2012; Associate Professor (Tenured), 2011-2019; associate director, Center for Regenerative Science and Medicine, 2017-2019; Endowed Chair, Dallas Heart Ball (UT Southwestern Medical Center).

Mayo Clinic, Rochester, Minnesota, Supplemental Consultant, Department of Cardiovascular Surgery, Wanek Program for Hypoplastic Left Heart Syndrome, 2018-2022.

Appointed to the staff of Mayo Clinic in Florida, 2021; Associate Professor of Medicine, Mayo Clinic College of Medicine and Science, 2023-present; Vice Chair for Research, Division of Cardiovascular Medicine, 2025-present.