District of Columbia Primary Care Association
- A health action organization serving medically vulnerable residents. Members, policies, programs and how to help.
- http://www.dcpca.org/

District of Columbia Psychological Association - DCPA
- Works to advance psychology as a science and a profession and as a means of promoting human welfare. Includes history, FAQ, position announcements, academic and research information, events and membership information.
- http://www.dcpaonline.org/

District of Columbia Metropolitan Area Dietetic Association
- Local affiliate of the American Dietetic Association, an association of dieticians and other nutrition professionals. Site includes newsletter, events calendar, and Web links.
- http://www.dcmada.org

American Physical Therapy Association District of Columbia - APTADC
- Works to further the profession's role in the prevention, diagnosis, and treatment of movement dysfunctions and the enhancement of the physical health and functional abilities of members of the public. Includes membership information.
- http://www.apta.org/Components/chapters/chap_profiles/dc_profile