| 2024 | Donald D Hammill Foundation | 990PF | Director | 1 | $2,500 | $0 | View return |
| 2024 | Hammill Institute on Disabilities | 990 | Vice President/Director | 1.5 | $1,500 | $0 | View return |
| 2023 | Donald D Hammill Foundation | 990PF | Director | 5 | $2,500 | $0 | View return |
| 2023 | Hammill Institute on Disabilities | 990 | Vice President/Director | 5 | $1,500 | $0 | View return |
| 2023 | The Kaneohe Elementary School Ohana | 990EZ | Treasurer | 0.5 | $0 | $0 | View return |
| 2022 | Donald D Hammill Foundation | 990PF | Director | 2 | $2,500 | $0 | View return |
| 2022 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $1,500 | $0 | View return |
| 2021 | Donald D Hammill Foundation | 990PF | Director | 2 | $2,500 | $0 | View return |
| 2021 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $1,500 | $0 | View return |
| 2020 | Donald D Hammill Foundation | 990PF | Director | 2 | $2,500 | $0 | View return |
| 2020 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $1,500 | $0 | View return |
| 2019 | Donald D Hammill Foundation | 990PF | Director | 2 | $2,500 | $0 | View return |
| 2019 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $1,500 | $0 | View return |
| 2019 | Chinese Association of Salinas | 990 | Director | 0.11 | $0 | $0 | View return |
| 2018 | Donald D Hammill Foundation | 990PF | Director | 2 | $2,500 | $0 | View return |
| 2018 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $1,500 | $0 | View return |
| 2018 | Ventura County Medical Association | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2018 | Chinese Association of Salinas | 990 | Director | 0.1 | $0 | $0 | View return |
| 2017 | Donald D Hammill Foundation | 990PF | Director | 2 | $2,500 | $0 | View return |
| 2017 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $1,500 | $0 | View return |
| 2017 | Ventura County Medical Association | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2017 | Chinese Association of Salinas | 990 | Director | 0.1 | $0 | $0 | View return |
| 2016 | Donald D Hammill Foundation | 990PF | Director | 2 | $2,500 | $0 | View return |
| 2016 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $1,500 | $0 | View return |
| 2016 | Ventura County Medical Association | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2015 | Donald D Hammill Foundation | 990PF | Director | 2 | $2,500 | $0 | View return |
| 2015 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $1,500 | $0 | View return |
| 2015 | Ventura County Medical Association | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2014 | Ventura County Medical Association | 990 | Treasurer | 0 | $0 | $0 | View return |
| 2014 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $0 | $0 | View return |
| 2013 | Hammill Institute on Disabilities | 990 | Vice President/Director | 10 | $0 | $0 | View return |