| 1982 to 2000 | ACP |
| 1979 to 2000 | ASIM |
| 1980 to 1996 | AHHA- Annapolis; Board of Trustees |
| 1980 to 1990 | ASCH |
| 1980 to 2000 | State Medical Society, Maryland |
| 1980 to 2000 | County Medical Society; Anne Arundel County, Maryland |
| 1982 to 1984 | Served on County Medical Society executive committee |
| 1995 to 1998 | Health Awareness Board member |
| 1995 to Present | Peer reviewer and physician supervisor for BPQA |
| 1995 to 1997 | Served as State Medical Society appointee to the Governor’s Commission on Complimentary Medicine |
| 1999 to Present | International society for Neuroimmune modulation |
| 1999 to Present | American Association for CFS |
| 1999 to Present | International MyoPain Society |
| 1999 to Present | Advisor to various groups; including IMEGA (umbrella organization for M.E. groups in England), TYH and ProHealth |