Nonprofit · EIN 06-0384010
HARTFORD MEDICAL SOCIETY
Tax-exempt · LITCHFIELD, CT 06759
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| November 30, 2025 | 990 | $194,983 | $131,153 | $63,830 | $1,101,644 | $0 | $1,101,644 |
| November 30, 2024 | 990 | $200,300 | $144,862 | $55,438 | $1,006,507 | $0 | $1,006,507 |
| November 30, 2023 | 990 | $100,802 | $134,883 | -$34,081 | $916,838 | $5,100 | $911,738 |
Financial details: 990 for the year ended November 30, 2025
Revenue
- Contributions, gifts and grants
- $144,900
- Membership dues
- $9,200
- Program service revenue
- $12,055
- Investment income
- $38,028
- Net gain from sales of assets
- -$2,384
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $950
- Program services (functional)
- $66,923
- Management and general (functional)
- $64,230
Balance sheet and other
- Total assets, start of year
- $1,006,507
- Total assets, end of year
- $1,101,644
- Total liabilities, end of year
- $0
- Net assets, end of year
- $1,101,644
- Net assets without donor restrictions
- $1,101,644
- Gross receipts
- $311,028
- Employees
- 0
- Year formed
- 1946
- State of legal domicile
- CT
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 November 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| BERNARD KOSTO MD | TRUSTEE Trustee or director | 1 | $0 |
| TAMIKA BLACKBURN MD | TRUSTEE Trustee or director | 1 | $0 |
| SUPRANA DUTTA MD | TRUSTEE Trustee or director | 1 | $0 |
| BARBARA CALDERONE MD | TRUSTEE Trustee or director | 1 | $0 |
| JOSHUA STEIN MD | TRUSTEE Trustee or director | 1 | $0 |
| GERALD LEONARD MD | TRUSTEE Trustee or director | 1 | $0 |
| ROCCO ORLANDO MD | TRUSTEE Trustee or director | 1 | $0 |
| JOHN WELCH MD | PAST PRESIDENT Officer | 3 | $0 |
| JANINE COLLINGE MD | SECRETARY Officer | 3 | $0 |
| WILLIAM MACDONNELL DDS | VICE PRESIDENT Officer | 3 | $0 |
| ROLF KNOLL MD | TREASURER Officer | 3 | $0 |
| DAVID EMMEL MD | PRESIDENT Officer | 4 | $0 |
990 for the year ended November 30, 2024: 12 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| WILLIAM MACDONNELL DDS | DIRECTOR Trustee or director | 1 | $0 |
| SUPARNA DUTTA MD | DIRECTOR Trustee or director | 1 | $0 |
| SARA SCHULWOLF | DIRECTOR Trustee or director | 1 | $0 |
| JOSHUA STEIN MD | DIRECTOR Trustee or director | 1 | $0 |
| GERALD LEONARD MD | DIRECTOR Trustee or director | 1 | $0 |
| DAVID EMMEL MD | DIRECTOR Trustee or director | 1 | $0 |
| VICTORIA KOZAR | DIRECTOR Trustee or director | 1 | $0 |
| JOHN WELCH MD | PRESIDENT Officer | 4 | $0 |
| ROBERT GREEN MD | VICE PRESIDENT Officer | 3 | $0 |
| BERNARD KOSTO MD | PAST PRESIDENT Officer | 3 | $0 |
| TAMIKA BLACKBURN MD | SECRETARY Officer | 3 | $0 |
| ROLF KNOLL MD | TREASURER Officer | 3 | $0 |
990 for the year ended November 30, 2023: 13 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| RICHARD KNAUFT MD | TRUSTEE Trustee or director | 1 | $0 |
| WILLIAM MACDONNELL DDS | TRUSTEE Trustee or director | 1 | $0 |
| SUPARNA DUTTA MD | TRUSTEE Trustee or director | 1 | $0 |
| ROLF KNOLL MD | TRUSTEE Trustee or director | 1 | $0 |
| VICTORIA KOZAR | TRUSTEE Trustee or director | 1 | $0 |
| MICHAEL O'LOUGHLIN MD | TRUSTEE Trustee or director | 1 | $0 |
| SARA SCHULWOLF | TRUSTEE Trustee or director | 1 | $0 |
| JOSHUA STEIN MD | TRUSTEE Trustee or director | 1 | $0 |
| JOHN WELCH MD | PRESIDENT Officer | 4 | $0 |
| THOMAS BANEVER MD | TREASURER Officer | 3 | $0 |
| ROBERT GREEN MD | VICE PRESIDENT Officer | 3 | $0 |
| BERNARD KOSTO MD | PAST PRESIDENT Officer | 3 | $0 |
| TAMIKA BLACKBURN MD | SECRETARY Officer | 3 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 854, LITCHFIELD, CT 06759-0854
- Principal officer (990 for 2024)
- DR ROLF KNOLL, 96 PHEASANT HILL DRIVE, WEST HARTFORD, CT 06107
- Signed the 990
- DR ROLF KNOLL, TREASURER
- Return prepared by
- Michael J Berryman CPA
Mission
MEDICAL RESEARCH AND EDUCATION
Program accomplishments
- LIBRARY AND MUSEUM - PURCHASE OF BOOKS JOURNALS COPIER RENTAL SUPPLIES CONTRACTUAL SERVICES OTHER EXPENSES INCURRED IN THE OPERATION OF THE MEDICAL LIBRARY MUSEUMExpenses $36,000
- PROGRAMS AND MEETINGS - EXPENSES INCURRED IN PROVIDING SPEAKERS AND PANEL DISCUSSIONS DINNER MEETINGS PRINTING AND COLLATION ON MEDICAL SUBJECTSExpenses $30,923 · revenue $12,055
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 November, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2024 | November 30, 2025 | April 15, 2026 | 990 on file |
| 2023 | November 30, 2024 | April 15, 2025 | 990 on file |
| 2022 | November 30, 2023 | April 15, 2024 | 990 on file |
IRS record
- EIN
- 06-0384010
- 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
- 1999
- Accounting year ends
- November
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Education (B74Z)
- Assets (IRS master file)
- $1,101,644
- Income (IRS master file)
- $311,028
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | November 2025 | $194,983 | $131,153 | $1,101,644 | XML |
| 990 | November 2024 | $200,300 | $144,862 | $1,006,507 | XML |
| 990 | November 2023 | $100,802 | $134,883 | $916,838 | XML |
| 990 | November 2022 | $161,477 | $214,184 | $988,962 | IRS |
| 990 | November 2021 | – | – | – | IRS |
| 990 | November 2020 | – | – | – | IRS |
| 990 | November 2019 | – | – | – | IRS |
| 990 | November 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 06-0384010).
Questions about HARTFORD MEDICAL SOCIETY
- What is the EIN of HARTFORD MEDICAL SOCIETY?
- The employer identification number (EIN) of HARTFORD MEDICAL SOCIETY is 06-0384010.
- Is HARTFORD MEDICAL SOCIETY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1999.
- Are donations to HARTFORD MEDICAL SOCIETY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does HARTFORD MEDICAL 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 HARTFORD MEDICAL SOCIETY due?
- The return for tax year 2025 (the year ending November 30, 2026) is due April 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did HARTFORD MEDICAL SOCIETY last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended November 2025.
- Who is the principal officer of HARTFORD MEDICAL SOCIETY?
- The 990 for the year ended November 30, 2025 names DR ROLF KNOLL.
- Who are the officers and directors of HARTFORD MEDICAL SOCIETY?
- The 990 for the year ended November 30, 2025 lists 12 people; 0 received compensation from the organization.
- How much revenue does HARTFORD MEDICAL SOCIETY have?
- On its 990 for the year ended November 30, 2025 it reported revenue of $194,983, expenses of $131,153 and total assets of $1,101,644 at year end.
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