Nickolaus Lewis currently serves as Secretary for the National Congress of American Indians since December 2023. Lewis has been a Council Member for the LUMMI INDIAN BUSINESS COUNCIL since November 2015 and holds the position of Vice Chairman for both the Tribal Self Governance and the National Indian Health Board, with roles beginning in August 2022 and February 2021, respectively. Additionally, Lewis has been the Chairman of the Board for the Northwest Portland Area Indian Health Board since January 2019.