Advisory board Washington University Health Policy Institute, since 2004. Fellow American College of Physicians, American College Cardiology, American Academy Medical Directors. Member American Association for the Advancement of Science, New York Academy of Sciences (life), Missouri Society Internal Medicine (council), Governor Relations Committee, American Academy Physician Executives, Mayo Alumni Associations, American Consultant League, American Management Association, Cornell University Alumni Association, Princeton Alumni Association, Princeton University Club (board directors since 2000).
Resident in internal medicine New York Hospital, Memorial Sloan-Kettering, Hospital for Special Surgery, New York City, 1974-1976. Resident in cardiology Mayo Graduate School Medicine, Rochester, Minnesota, 1976-1979. With, 1979—1995; program director, internal medicine St. Mary's Health Center, 1979—1982, chairman, department internal medicine, 1980—1982.
Chief medical officer Health Management Associates, Inc. Assistant professor medicine, Washington University Medical Center, 1985-1988, president Riner Group, Inc., since 1980, Riner Heart Group, Inc., 1980-1995. Senior science advisor pharmaceutical division BioMed Systems, St. Louis, 1984-1995.
Professor St. Louis University. Corporation director quality affairs Suruhanjaya Syarikat Malaysia Health Care Systems, 1989-1991. Chairman Missouri State Medical Association Commission on Medical Economics, 3rd Party Medicine and Government Relations, 1990-1992.
Vice president clinical services Daughters Charity National Health Systems, 1991-1995. Board directors Alleghany Health Systems, Tampa, Florida, 1991-1996, chairman board directors, 1994-1996. Board directors Horizon/Content Management System Healthcare, 1996-1998, Seton Institute for International Development, San Francisco, 1995-1997, Seton Institute for International Development, San Francisco, 1995-1997, Liferate Systems, Inc., 1997-1999, Association for Corporation Growth, 1998-2001, Mathew Dickey Academy, St. Louis, 1998-2001, Angelica, also member nominating and audit committees, since 2005.