Nonprofit · EIN 83-0821669
SIERRA SPINE SOCIETY
Tax-exempt · NEWBURY PARK, CA 91320
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $159,320 | $146,184 | $13,136 | $66,627 | $0 | $66,627 |
| December 31, 2024 | 990-EZ | $121,540 | $103,908 | $17,632 | $53,491 | $0 | $53,491 |
| December 31, 2023 | 990-EZ | $142,400 | $143,634 | -$1,234 | $35,859 | $0 | $35,859 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $145,595
- Program service revenue
- $13,725
Expenses
- Compensation of officers, directors and key employees
- $0
- Professional fees and payments to contractors
- $3,373
- Other expenses
- $142,811
- Program services (functional)
- $141,309
Balance sheet and other
- Total assets, start of year
- $53,491
- Total assets, end of year
- $66,627
- Total liabilities, end of year
- $0
- Net assets, end of year
- $66,627
- Cash, savings and investments
- $66,627
- Gross receipts
- $159,320
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-EZ for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MICHAEL DORSI | PRESIDENT | 2 | $0 |
990-EZ for the year ended December 31, 2024: 1 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MICHAEL DORSI | PRESIDENT | 2 | $0 |
990-EZ for the year ended December 31, 2023: 1 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MICHAEL DORSI | PRESIDENT | 2 | $0 |
Address and contacts
- Address (IRS master file)
- 1460 TOPA VIEW TRL, NEWBURY PARK, CA 91320-4660
- In care of
- % MICHAEL J DORSI
- Mailing address (990-N for 2018)
- 168 N BRENT STREET NO 408, VENTURA CA 930032824
- Principal officer (990-N for 2018)
- MICHAEL DORSI, 168 N BRENT STREET NO 408, VENTURA CA 930032824
- Signed the 990-EZ
- MICHAEL DORSI, PRESIDENT
- Phone
- (805) 643-2179
- Website
- SIERRASPINESOCIETY.COM
- Return prepared by
- NASIF HICKS HARRIS & CO LLP
California records
California keeps its own records of charities and corporations. Search them by EIN 83-0821669 or by the name SIERRA SPINE SOCIETY.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
THE SPECIFIC PURPOSE OF THIS CORPORATION IS TO FORM A MEDICAL SOCIETY FOCUSED ON EDUCATION FOR SPINE SURGEONS.
Program accomplishments
- ANNUAL MULTIDISCIPLINARY SYMPOSIUM TO IMPROVE THE FUND OF KNOWLEDGE AND TO INCREASE COMPETENCE IN MANAGING PATIENTS WITH SPINAL DISORDERS. THE COMPREHENSIVE COURSE IS OPEN TO SPINE SURGEONS, PAIN MANAGEMENT SPECIALISTS, AND INCLUDES CASE-BASED DISCUSSIONS FOCUSED ON CARE FOR SPINE PATIENTS.Expenses $141,309
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 | 990-EZ on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 83-0821669
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2019
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Medical research (H96)
- Assets (IRS master file)
- $66,627
- Income (IRS master file)
- $159,320
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $159,320 | $146,184 | $66,627 | XML |
| 990-EZ | December 2024 | $121,540 | $103,908 | $53,491 | IRS |
| 990-EZ | December 2023 | $142,400 | $143,634 | $35,859 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
| 990-N for 2018 Officer: MICHAEL DORSI | December 31, 2018 | ≤ $50,000 receipts | – | – | e-Postcard |
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 83-0821669).
Questions about SIERRA SPINE SOCIETY
- What is the EIN of SIERRA SPINE SOCIETY?
- The employer identification number (EIN) of SIERRA SPINE SOCIETY is 83-0821669.
- Is SIERRA SPINE SOCIETY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2019.
- Are donations to SIERRA SPINE SOCIETY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SIERRA SPINE SOCIETY 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 SIERRA SPINE SOCIETY due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did SIERRA SPINE SOCIETY last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who is the principal officer of SIERRA SPINE SOCIETY?
- The 990-N for 2018 names MICHAEL DORSI.
- Who are the officers and directors of SIERRA SPINE SOCIETY?
- The 990-EZ for the year ended December 31, 2025 lists 1 person; 0 received compensation from the organization.
- How much revenue does SIERRA SPINE SOCIETY have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $159,320, expenses of $146,184 and total assets of $66,627 at year end.
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