Nonprofit · EIN 45-4930900
AMERICAN THORACIC SOCIETY INC
Also known as OREGON THORACIC SOCIETY
Tax-exempt · PORTLAND, OR 97228
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $91,075 | $49,181 | $41,894 | $67,635 | $2,995 | $64,640 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Program service revenue
- $91,075
Expenses
- Compensation of officers, directors and key employees
- $0
- Professional fees and payments to contractors
- $10,411
- Other expenses
- $38,770
- Program services (functional)
- $35,857
Balance sheet and other
- Total assets, start of year
- $23,000
- Total assets, end of year
- $67,635
- Total liabilities, end of year
- $2,995
- Net assets, end of year
- $64,640
- Cash, savings and investments
- $67,635
- Gross receipts
- $91,075
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 |
|---|---|---|---|
| ETHAN CORCORAN | PRESIDENT | 1 | $0 |
| BRADFORD GLAVAN | VICE PRESIDENT | 1 | $0 |
| RYAN CLAY | SECRETARY | 1 | $0 |
| KJ WESENBERG | PAST PRESIDENT | 1 | $0 |
| ANDREW LEVY | PLANNING COMMITTEE CHAIR | 1 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 5584, PORTLAND, OR 97228-5584
- In care of
- % ETHAN CORCORAN
- Mailing address (990-N for 2024)
- PO Box 328, West Linn OR 97068
- Principal officer (990-N for 2024)
- Karen Wesenberg, 2830 White Salmon Ct, West Linn OR 97068
- Signed the 990-EZ
- ETHAN CORCORAN, PRESIDENT
- Phone
- (312) 515-0309
- Return prepared by
- Pacific Northwest Tax Service
Mission
TO PROMOTE MEDICAL EDUCATION & INTEREST
Program accomplishments
- THE ANNUAL CHEST DISEASE CONFERENCE, HOSTED BY THE OREGON THORACIC SOCIETYExpenses $35,857
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
- 45-4930900
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Exempt since
- 2014
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Group exemption
- 5973: AMERICAN THORACIC SOCIETY INC
- Assets (IRS master file)
- $67,635
- Income (IRS master file)
- $91,075
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $91,075 | $49,181 | $67,635 | IRS |
| 990-N for 2024 Officer: Karen Wesenberg | December 31, 2024 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2023 Officer: KAREN WESENBERG MD | December 31, 2023 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2022 Officer: PATRICIA HUIE | December 31, 2022 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2020 Officer: PATRICIA HUIE | December 31, 2020 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2019 Officer: JOHANNA RICHMAN | December 31, 2019 | ≤ $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 45-4930900).
Questions about AMERICAN THORACIC SOCIETY INC
- What is the EIN of AMERICAN THORACIC SOCIETY INC?
- The employer identification number (EIN) of AMERICAN THORACIC SOCIETY INC is 45-4930900.
- Is AMERICAN THORACIC SOCIETY INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2014.
- Which annual return does AMERICAN THORACIC SOCIETY INC 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 AMERICAN THORACIC SOCIETY INC 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 AMERICAN THORACIC SOCIETY INC 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 AMERICAN THORACIC SOCIETY INC?
- The 990-N for 2024 names Karen Wesenberg.
- Who are the officers and directors of AMERICAN THORACIC SOCIETY INC?
- The 990-EZ for the year ended December 31, 2025 lists 5 people; 0 received compensation from the organization.
- How much revenue does AMERICAN THORACIC SOCIETY INC have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $91,075, expenses of $49,181 and total assets of $67,635 at year end.
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