Nonprofit · EIN 81-2294033
NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS
Tax-exempt · ANN ARBOR, MI 48108
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $181,563 | $126,596 | $54,967 | $313,020 | – | $313,020 |
| December 31, 2024 | 990-EZ | $117,367 | $72,498 | $44,869 | $258,053 | – | $258,053 |
| December 31, 2023 | 990-EZ (amended) | $141,837 | $77,361 | $64,476 | $213,184 | – | $213,184 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $148,500
- Membership dues
- $23,034
- Program service revenue
- $1,015
- Investment income
- $9,014
Expenses
- Compensation of officers, directors and key employees
- $0
- Professional fees and payments to contractors
- $7,909
- Occupancy
- $233
- Other expenses
- $118,454
- Program services (functional)
- $106,493
Balance sheet and other
- Total assets, start of year
- $258,053
- Total assets, end of year
- $313,020
- Total liabilities, end of year
- –
- Net assets, end of year
- $313,020
- Cash, savings and investments
- $313,020
- Gross receipts
- $181,563
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 |
|---|---|---|---|
| Raymond Cho MD | President | 2 | $0 |
| Paul Langer MD | Vice President | 2 | $0 |
| Alon Kahana MD | Treasurer | 2 | $0 |
| Rachel Sobel | Secretary | 2 | $0 |
| Prem Subramanian | Asst Treasurer | 2 | $0 |
990-EZ for the year ended December 31, 2024: 5 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Raymond Cho MD | President | 2 | $0 |
| Paul Langer MD | Vice President | 2 | $0 |
| Alon Kahana MD | Treasurer | 2 | $0 |
| Rachel Sobel | Secretary | 2 | $0 |
| Prem Subramanian | Asst Treasurer | 2 | $0 |
990-EZ for the year ended December 31, 2023: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Paul Langer MD | Secretary | 2 | $0 |
| Alon Kahana MD | President/Treas | 2 | $0 |
Address and contacts
- Address (IRS master file)
- 4212 LAKE FOREST DR W, ANN ARBOR, MI 48108-8918
- Mailing address (990-N for 2024)
- 4212 Lake Forest Dr W, Ann Arbor MI 48108
- Principal officer (990-N for 2024)
- Alon Kahana MD PhD, 4212 Lake Forest Dr W, Ann Arbor MI 48108
- Signed the 990-EZ
- Alon Kahana MD, Treasurer
- Phone
- (734) 478-2288
- Website
- https://nasaos.org
- Return prepared by
- Clarity Group Financial
Mission
The purpose of NASAOS is to improve care of patients with complex orbital disease through collaboration, education, research and outreach efforts. We represent patients with orbital disorders and the academic orbital surgeons who take care of them today and tomorrow, advancing knowledge and bringing innovation and teamwork to patient care.
Program accomplishments
- Conferences for scientific lectures and case discussions, with a particular focus on furthering patient care through research and education.Expenses $106,493
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-N on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-N on file |
IRS record
- EIN
- 81-2294033
- 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
- 2018
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Health care (E01)
- Assets (IRS master file)
- $313,020
- Income (IRS master file)
- $181,563
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $181,563 | $126,596 | $313,020 | XML |
| 990-N for 2024 Officer: Alon Kahana MD PhD | December 31, 2024 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-EZ | December 2024 | $117,367 | $72,498 | $258,053 | IRS |
| 990-N for 2023 Officer: Alon Kahana MD PhD | December 31, 2023 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-EZ | December 2023 | $141,837 | $77,361 | $213,184 | IRS |
| 990-N for 2022 Officer: Alon Kahana | December 31, 2022 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2020 Officer: Alon Kahana | December 31, 2020 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2019 Officer: Alon Kahana | December 31, 2019 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2018 Officer: Alon Kahana | 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 81-2294033).
Questions about NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS
- What is the EIN of NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS?
- The employer identification number (EIN) of NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS is 81-2294033.
- Is NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2018.
- Are donations to NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS 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 NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS 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 NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS 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 NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS?
- The 990-N for 2024 names Alon Kahana MD PhD.
- Who are the officers and directors of NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS?
- The 990-EZ for the year ended December 31, 2025 lists 5 people; 0 received compensation from the organization.
- How much revenue does NORTH AMERICAN SOCIETY OF ACADEMIC ORBITAL SURGEONS have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $181,563, expenses of $126,596 and total assets of $313,020 at year end.
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