Nonprofit · EIN 36-3836229
SOCIETY OF NEUROINTERVENTIONAL SURGERY
Tax-exempt · FAIRFAX, VA 22033
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2024 | 990 | $5,013,221 | $5,029,861 | -$16,640 | $7,824,550 | $1,411,622 | $6,412,928 |
| December 31, 2023 | 990 | $5,835,350 | $4,988,236 | $847,114 | $7,580,886 | $1,427,595 | $6,153,291 |
Financial details: 990 for the year ended December 31, 2024
Revenue
- Contributions, gifts and grants
- $0
- Program service revenue
- $4,795,745
- Investment income
- $180,175
- Royalties
- $37,301
- Net gain from sales of assets
- $4,613
- Other revenue
- $37,301
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $265,314
- Other salaries and wages
- $316,893
- Salaries, compensation and benefits (total)
- $669,979
- Professional fundraising fees
- $0
- Legal fees
- $31,663
- Accounting fees
- $84,839
- Occupancy
- $7,214
- Travel
- $454,507
- Depreciation
- $1,567
Balance sheet and other
- Total assets, start of year
- $7,580,886
- Total assets, end of year
- $7,824,550
- Total liabilities, end of year
- $1,411,622
- Net assets, end of year
- $6,412,928
- Land, buildings and equipment
- $5,383
- Publicly traded securities
- $4,313,968
- Net assets without donor restrictions
- $6,412,928
- Gross unrelated business income
- $376,772
- Gross receipts
- $5,038,927
- Employees
- 4
- Volunteers
- 17
- Year formed
- 1992
- State of legal domicile
- DC
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2024, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MARIE DENSLOW | EXECUTIVE DIRECTOR Officer | 40 | $243,159 | $22,155 |
| EDDIE WOODS | DIRECTOR OF MEMBER SERVICE Highest-paid employee | 40 | $119,736 | $16,533 |
| JOHANNA FIFI MD | PRESIDENT Trustee or director, Officer | 1 | $0 | $0 |
| GUILHERME DABUS MD | PRESIDENT-ELECT Trustee or director | 1 | $0 | $0 |
| PETER KAN MD | VICE PRESIDENT Trustee or director, Officer | 1 | $0 | $0 |
| JUSTIN FRASER MD | TREASURER Trustee or director, Officer | 1 | $0 | $0 |
| MAXIM MOKIN MD PHD | SECRETARY Trustee or director, Officer | 1 | $0 | $0 |
| JEREMY HEIT MD PHD | EDUCATION CHAIR Trustee or director | 1 | $0 | $0 |
| HAL RICE MBBS | MEMBER AT LARGE Trustee or director | 1 | $0 | $0 |
| DAVID ALTSCHUL MD | MEMBER AT LARGE Trustee or director | 1 | $0 | $0 |
| JENNY TSAI MD | MEMBER AT LARGE Trustee or director | 1 | $0 | $0 |
| MAHESH JAYARAMAN MD | IMMEDIATE PAST PRESIDENT Trustee or director | 1 | $0 | $0 |
| J MOCCO MD | SECOND PAST PRESIDENT Trustee or director | 1 | $0 | $0 |
| JONATHAN GROSSBERG MD | AUDIT COMMITTEE CHAIR Trustee or director | 1 | $0 | $0 |
| ADRIENNE MORAFF MD | DEI COMMITTEE CHAIR Trustee or director | 1 | $0 | $0 |
11 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| EDGAR SAMANIEGO MD | GOVERNANCE COMMITTEE CHAIR Trustee or director | 1 | $0 |
| FELIPE C ALBUQUERQUE MD | JNIS EDITOR Trustee or director | 1 | $0 |
| BLAISE BAXTER MD | SNIS FOUNDATION CHAIR Trustee or director | 1 | $0 |
| DANIEL SAHLEIN MD | SNIS PSO MEDICAL DIRECTOR Trustee or director | 1 | $0 |
| CLEMENS SCHIRMER MD PHD | STANDARDS COMMITTEE CHAIR Trustee or director | 1 | $0 |
| MATTHEW AMANS MD | MEMBER AT LARGE TO 7/24 Trustee or director | 1 | $0 |
| VITOR MENDES PEREIRA MD | MEMBER AT LARGE TO 7/24 Trustee or director | 1 | $0 |
| MICHAEL FROEHLER MD PHD | GOV COMM CHAIR TO 7/24 Trustee or director | 1 | $0 |
| SAMEER ANSARI MD PHD | SNIS PSO MED DIR TO 7/24 Trustee or director | 1 | $0 |
| STEVEN HETTS MD | STANDARDS COMM CHAIR TO 7/24 Trustee or director | 1 | $0 |
| MICHAEL CHEN MD | 2ND PAST PRESIDENT TO 7/24 Trustee or director | 1 | $0 |
990 for the year ended December 31, 2023: 24 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MARIE DENSLOW | EXECUTIVE DIRECTOR Officer | 40 | $235,963 | $20,904 |
| EDDIE WOODS | DIRECTOR OF MEMBER SERVICE Highest-paid employee | 40 | $115,677 | $14,832 |
| FELIPE C ALBUQUERQUE MD | JNIS EDITOR Trustee or director | 1 | $36,000 | $0 |
| MAHESH JAYARAMAN MD | PRESIDENT Trustee or director, Officer | 1 | $0 | $0 |
| JOHANNA FIFI MD | PRESIDENT-ELECT Trustee or director | 1 | $0 | $0 |
| GUILHERME DABUS MD | VICE PRESIDENT Trustee or director, Officer | 1 | $0 | $0 |
| JUSTIN FRASER MD | TREASURER Trustee or director, Officer | 1 | $0 | $0 |
| PETER KAN MD | SECRETARY Trustee or director, Officer | 1 | $0 | $0 |
| JEREMY HEIT MD PHD | EDUCATION CHAIR Trustee or director | 1 | $0 | $0 |
| MATTHEW AMANS MD | MEMBER AT LARGE Trustee or director | 1 | $0 | $0 |
| VITOR MENDES PEREIRA MD | MEMBER AT LARGE Trustee or director | 1 | $0 | $0 |
| EDGAR SAMANIEGO MD | MEMBER AT LARGE Trustee or director | 1 | $0 | $0 |
| J MOCCO MD | IMMEDIATE PAST PRESIDENT Trustee or director | 1 | $0 | $0 |
| MICHAEL CHEN MD | 2ND PAST PRESIDENT Trustee or director | 1 | $0 | $0 |
| JONATHAN GROSSBERG MD | AUDIT COMMITTEE CHAIR Trustee or director | 1 | $0 | $0 |
| JENNY TSAI MD | DEI COMMITTEE CHAIR Trustee or director | 1 | $0 | $0 |
| MICHAEL FROEHLER MD PHD | GOVERNANCE COMMITTEE CHAIR Trustee or director | 1 | $0 | $0 |
| BLAISE BAXTER MD | SNIS FOUNDATION CHAIR Trustee or director | 1 | $0 | $0 |
| SAMEER ANSARI MD PHD | SNIS PSO MEDICAL DIRECTOR Trustee or director | 1 | $0 | $0 |
| STEVEN HETTS MD | STANDARDS COMMITTEE CHAIR Trustee or director | 1 | $0 | $0 |
| READE DE LEACY MD | SECRETARY TO 07/2023 Trustee or director | 1 | $0 | $0 |
| JUSTIN MASCITELLI MD | MEMBER AT LARGE TO 07/2023 Trustee or director | 1 | $0 | $0 |
| SUNIL SHETH MD | MEMBER AT LARGE TO 07/2023 Trustee or director | 1 | $0 | $0 |
| WILLIAM MACK MD | 2ND PAST PRESIDENT TO 07/2023 Trustee or director | 1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 12587 FAIR LAKES CIRCLE NO 353, FAIRFAX, VA 22033-3822
- Principal officer (990 for 2024)
- MARIE DENSLOW CAE, 12587 FAIR LAKES CIRCLE 353, FAIRFAX, VA 22033
- Signed the 990
- MARIE DENSLOW CAE, EXECUTIVE DIRECTOR
- Phone
- (703) 691-2272
- Website
- WWW.SNISONLINE.ORG
- Return prepared by
- CLIFTONLARSONALLEN LLP
Mission
THE SOCIETY IS ORGANIZED AND OPERATED EXCLUSIVELY TO PROMOTE EXCELLENCE IN PATIENT CARE, PROVIDE EDUCATION, SUPPORT RESEARCH, INFLUENCE HEALTH CARE POLICY, AND FOSTER GROWTH OF NEUROINTERVENTIONAL SURGICAL PROCEDURES THROUGHOUT THE UNITED STATES.
Program accomplishments
- THE SOCIETY (SNIS) HAS OVER 1400 NEUROINTERVENTIONAL SURGEONS AS MEMBERS AND EXISTS TO ADVANCE THE KNOWLEDGE AND DEVELOPMENT OF NEUROINTERVENTIONAL SURGERY. IN 2024 WE HELD OUR ANNUAL EDUCATIONAL MEETING WHERE OVER 1,000 ATTENDEES GATHER TO LEARN THE LATEST IN BEST PRACTICES FOR NEUROINTERVENTIONAL SURGERY.WE ALSO HOLD MONTHLY EDUCATIONAL WEBINARS.OUR GET AHEAD OF STROKE PROGRAM IS A NATIONAL PUBLIC EDUCATION INITIATIVE TO IMPROVE SYSTEMS OF CARE FOR STROKE PATIENTS.
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | Not on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 36-3836229
- Tax-exempt status
- 501(c)(6): Business league or chamber of commerce
- Donations deductible
- No
- Exempt since
- 1995
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $7,824,550
- Income (IRS master file)
- $5,038,927
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2024 | $5,013,221 | $5,029,861 | $7,824,550 | IRS |
| 990 | December 2023 | $5,835,350 | $4,988,236 | $7,580,886 | XML |
| 990 | December 2022 | $4,484,716 | $4,454,249 | $6,422,847 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 36-3836229).
Questions about SOCIETY OF NEUROINTERVENTIONAL SURGERY
- What is the EIN of SOCIETY OF NEUROINTERVENTIONAL SURGERY?
- The employer identification number (EIN) of SOCIETY OF NEUROINTERVENTIONAL SURGERY is 36-3836229.
- Is SOCIETY OF NEUROINTERVENTIONAL SURGERY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 1995.
- Are donations to SOCIETY OF NEUROINTERVENTIONAL SURGERY tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does SOCIETY OF NEUROINTERVENTIONAL SURGERY file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of SOCIETY OF NEUROINTERVENTIONAL SURGERY due?
- The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did SOCIETY OF NEUROINTERVENTIONAL SURGERY last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2024.
- Who is the principal officer of SOCIETY OF NEUROINTERVENTIONAL SURGERY?
- The 990 for the year ended December 31, 2024 names MARIE DENSLOW CAE.
- Who are the officers and directors of SOCIETY OF NEUROINTERVENTIONAL SURGERY?
- The 990 for the year ended December 31, 2024 lists 26 people; 2 received compensation from the organization, the highest $243,159 (MARIE DENSLOW, EXECUTIVE DIRECTOR).
- How much revenue does SOCIETY OF NEUROINTERVENTIONAL SURGERY have?
- On its 990 for the year ended December 31, 2024 it reported revenue of $5,013,221, expenses of $5,029,861 and total assets of $7,824,550 at year end.
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