Vice-Chair, Springfield District Council, 2004-present

Senator, Commonwealth of Virginia Senate, District 39, 2008-2024

Candidate, Commonwealth of Virginia Senate, District 39, 2019

Former Member, Advisory Council on Pediatric Autoimmune Neuropsychiatric Disorders (PANS) Associated with Streptococcal Infections and Pediatric Acute-Onset Neuropsychiatric Syndrome (PANDAS), Virginia State Senate

Former Member, Commission on Small Business, Commonwealth of Virginia State Senate

Former Member, Council on Substance Abuse Services, Commonwealth of Virginia Senate

Former Member, Finance Committee, Commonwealth of Virginia Senate

Former Member, General Laws and Technology Subcommittee #1, Commonwealth of Virginia Senate

Former Member, Subcommittee on Claims, Commonwealth of Virginia Senate

Former Member, Subcommittee on General Laws and Technology #2, Commonwealth of Virginia Senate

Former Co-Chair, Subcommittee on Health Professions, Commonwealth of Virginia Senate

Former Member, Work Group on Service System Structure and Financing, Virginia State Senate

Former Advisor, Greater Prince William Community Health Center

Former Health Planner, Health Systems Agency of Northern Virginia

Founding Chair, Northern Virginia Perinatal Council, 1990-1996, 2004-present

Member, Green Breakfast Group, 2004-present

Founding Member/Analyst, Southeast Fairfax Health Task Force, 2003-present

Founding Member/Analyst, Steering Committee, Northern Virginia Regional Partnership, 2003-present

Board Member, Occoquan Watershed Coalition, 1997-present

Member, Fairfax Presbyterian Church, present

Founding Board Member, Clifton-Fairfax Station Transition in Place Services

Founding Member/Chair, Fairfax Alliance for Human Services

Founding Member, Fairfax County Human Services Council

Former Chair, Fairfax County Transportation Advisory Commission

Member, Mount Vernon-Lee Chamber of Commerce

Founding Member/Chair, Northern Virginia Access to Health Care Consortium

Former Vice-Chair, Tysons Task Force, Fairfax County

Session Member/Elder, Fairfax Presbyterian Church, 1988-1991, 2004-2007

Committee Chair, Braddock District Transportation and Land Use Group, 2003

President, Parent Teacher Association, Mount Vernon High School, 2000-2001

Founding Member/President, Academic Boosters Club, Robinson Secondary School, 1996-1998

President, Parent Teacher Association, Robinson Secondary School, 1992-1994