David Nahai was previously a Board member of the following organizations:
- Jewish Federation of Los Angeles
- Jewish Community Foundation
- Iranian-American Jewish Federation
- Bnai Zion Foundation
- Los Angeles Regional Water Quality Control Board
- Board of Trustees at Steven S. Wise Temple
- Los Angeles Board of Water and Power Commissioners
- Los Angeles Chamber of Commerce
- Jewish National Fund
- Clinton Climate Initiative (Senior Advisor)
David is currently a Board member of the following organizatons:
- California League of Conservation Voters
- Heal the Bay
- 30 Years After
