| 2024 | Head Injury Association Inc. | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2024 | Nassau Center Residential Development Corp | 990EZ | Trustee | 0.2 | $0 | $0 | View return |
| 2024 | Mary Haven Center of Hope | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2024 | Head Injury Foundation Inc | 990PF | President | 0 | $0 | $0 | View return |
| 2024 | Independent Group Home Living Program Inc. | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2024 | Association for Technology Dependent Children Inc. | 990 | Trustee | 0.2 | $0 | $0 | View return |
| 2024 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2023 | The Center for Developmental Disabilities Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | East End Disability Associates Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Head Injury Association Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Kinexion Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Nassau Center Residential Development Corp | 990EZ | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Head Injury Foundation Inc | 990PF | President | 0 | $0 | $0 | View return |
| 2023 | Maryhaven Transportation Services Inc | 990EZ | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Association for Technology Dependent Children Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Mary Haven Center of Hope | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Riverhead Hostel Holding Corp | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Independent Group Home Living Program Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2023 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2023 | New Interdisciplinary School Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Association for Technology Dependent Children Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | The Center for Developmental Disabilities Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Center of Hope Foundation Inc. | 990 | Trustee (Thru 6/22) | 0.25 | $0 | $0 | View return |
| 2022 | Kinexion Inc. | 990EZ | Trustee | 0.01 | $0 | $0 | View return |
| 2022 | Head Injury Association Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Independent Group Home Living Program Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Maryhaven Transportation Services Inc | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Riverhead Hostel Holding Corp | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Mary Haven Center of Hope | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Head Injury Foundation Inc | 990 | President | 1 | $0 | $0 | View return |
| 2022 | Nassau Center Residential Development Corp | 990EZ | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | East End Disability Associates Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2022 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2022 | New Interdisciplinary School Inc. | 990 | Trustee | 0.25 | $0 | $0 | View return |
| 2021 | Nassau Center Residential Development Corp | 990EZ | Trustee (As Of 09/23/21) | 0.25 | $0 | $0 | View return |
| 2021 | The Center for Developmental Disabilities Inc. | 990 | Trustee (As Of 09/2021) | 0.25 | $0 | $0 | View return |
| 2021 | Independent Group Home Living Program Inc. | 990 | Trustee, As Of 09/21 | 0.25 | $0 | $0 | View return |
| 2021 | Association for Technology Dependent Children Inc. | 990 | Trustee (As Of 09/21) | 0.25 | $0 | $0 | View return |
| 2021 | New Interdisciplinary School Inc. | 990 | Trustee As Of 09/21 | 0.25 | $0 | $0 | View return |
| 2021 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2020 | Head Injury Foundation Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2020 | Head Injury Association Inc. | 990 | Vice President | 1 | $0 | $0 | View return |
| 2020 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2019 | Head Injury Association Inc. | 990 | Vice President | 1 | $0 | $0 | View return |
| 2019 | Head Injury Foundation Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2019 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2018 | Head Injury Foundation Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2018 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2017 | Head Injury Foundation Inc | 990 | Vice President | 1 | $0 | $0 | View return |
| 2017 | The Feinstein Institute for Medical Research | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2017 | Head Injury Association Inc. | 990 | Vice President | 1 | $0 | $0 | View return |
| 2016 | Head Injury Association Inc. | 990 | Vice President | 1 | $0 | $0 | View return |
| 2016 | The Feinstein Institute for Medical Research | 990 | Director | 0 | $0 | $0 | View return |
| 2016 | Susan and Leonard Feinstein Foundation | 990PF | President | 0 | $0 | $0 | View return |
| 2015 | The Feinstein Institute for Medical Research | 990 | Director | 0 | $0 | $0 | View return |
| 2015 | Head Injury Association Inc. | 990 | Vice President | 1 | $0 | $0 | View return |
| 2014 | The Feinstein Institute for Medical Research | 990 | Director | 2 | $0 | $0 | View return |
| 2014 | Head Injury Association Inc. | 990 | Vice President | 1 | $0 | $0 | View return |
| 2013 | Siuh Systems Inc | 990 | Trustee | - | $0 | $0 | View return |
| 2013 | Staten Island University Hospital | 990 | Trustee | - | $0 | $0 | View return |
| 2013 | Head Injury Association Inc. | 990 | Vice President | 1 | $0 | $0 | View return |
| 2013 | The Feinstein Institute for Medical Research | 990 | Director | - | $0 | $0 | View return |