Nonprofit · EIN 73-1392619
OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC
Tax-exempt · OKLAHOMA CITY, OK 73172
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $196,776 | $181,275 | $15,501 | $592,893 | $0 | $592,893 |
| June 30, 2024 | 990 | $177,762 | $187,466 | -$9,704 | $557,971 | $0 | $557,971 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $0
- Program service revenue
- $178,000
- Investment income
- $18,776
- Net gain from sales of assets
- $1,585
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $3,000
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $5,709
- Program services (functional)
- $134,191
- Management and general (functional)
- $47,084
Balance sheet and other
- Total assets, start of year
- $557,971
- Total assets, end of year
- $592,893
- Total liabilities, end of year
- $0
- Net assets, end of year
- $592,893
- Publicly traded securities
- $478,230
- Gross receipts
- $259,213
- Employees
- 0
- Volunteers
- 9
- Year formed
- 1985
- State of legal domicile
- OK
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 June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| KATHLEEN A MUSSON CAE | EXECUTIVE DIRECTOR Officer | 20 | $18,667 |
| CHRISTINA E HENSON MD | BOARD MEMBER Trustee or director | 1 | $0 |
| JORDAN M MORTON MD | BOARD MEMBER Trustee or director | 1 | $0 |
| RAID ALJUMAILY MD | BOARD MEMBER Trustee or director | 1 | $0 |
| SUSANNA ULAHANNAN MD | BOARD MEMBER Trustee or director | 1 | $0 |
| ADANMA AYANAMBAKKAM MD | BOARD MEMBER Trustee or director | 1 | $0 |
| PAUL EL TOMB MD | BOARD MEMBER Trustee or director | 1 | $0 |
| SCOTT COLE MD | BOARD MEMBER Trustee or director | 1 | $0 |
| JOSE EUGENIO NAJERA MD | PRESIDENT Officer | 1 | $0 |
| WILLIAM C DOOLEY MD | TREASURER Officer | 1 | $0 |
990 for the year ended June 30, 2024: 8 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| KATHLEEN A MUSSON CAE | EXECUTIVE DIRECTOR Officer | 20 | $62,000 |
| CHRISTINA E HENSON MD | BOARD MEMBER Trustee or director | 1 | $0 |
| JORDAN M MORTON MD | BOARD MEMBER Trustee or director | 1 | $0 |
| RAID ALJUMAILY MD | BOARD MEMBER Trustee or director | 1 | $0 |
| SUSANNA ULAHANNAN MD | BOARD MEMBER Trustee or director | 1 | $0 |
| TODD M KLIEWER MD | BOARD MEMBER Trustee or director | 1 | $0 |
| JOSE EUGENIO NAJERA MD | PRESIDENT Officer | 1 | $0 |
| WILLIAM C DOOLEY MD | TREASURER Officer | 1 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 720024, OKLAHOMA CITY, OK 73172-0024
- Principal officer (990 for 2024)
- DR ADANMA AYANAMBAKKAM, PO BOX 720024, OKLAHOMA CITY, OK 73172
- Signed the 990
- DR ADANMA AYANAMBAKKAM, PRESIDENT
- Phone
- (405) 850-8334
- Website
- WWW.OSCOOK.ORG
- 990-N for 2024 filed under this EIN
- Most likely by a chapter, club or affiliate (it says receipts are normally $50,000 or less). Officer: Patricia Troy, 182 Doncaster Road, Arnold MD 21012. Mailing address: 574E Ritchie Hwy 271, Severna Park MD 21146.
- Return prepared by
- ARLEDGE & ASSOCIATES PC
Mission
ADVANCE THE SCIENCES OF HEMATOLOGY AND ONCOLOGY AND ITS SUBSPECIALTIES AND IMPROVE SERVICES TO THE PUBLIC BY STUDYING THE SOCIOECONOMIC ASPECTS OF THE PRACTICES OF ITS MEMBERS.
Program accomplishments
- ON NOVEMBER 16, 2024, OSCO HELD AN IN-PERSON CONFERENCE, ENTITLED BEST OF ASCO. THIS LICENSED SEMINAR FOCUSED ON THE FOREMOST RESEARCH AND STRATEGIES IN ONCOLOGY THAT WERE PRESENTED AT THE 2024 AMERICAN SOCIETY OF CLINICAL ONCOLOGY (ASCO) ANNUAL MEETING. ON APRIL 12, 2025, OSCO HELD AN IN-PERSON CONFERENCE WITH TOPICS FROM THE "BEST OF SAN ANTONIO BREAST CANCER SYMPOSIUM," WHICH WAS HELD IN DECEMBER 2024. THE SEMINAR PROVIDED THE LATEST STATE-OF-THE-ART INFORMATION ON THE EXPERIMENTAL BIOLOGY, ETIOLOGY, PREVENTION, DIAGNOSIS, AND THERAPY OF BREAST CANCER AND PREMALIGNANT BREAST DISEASE. THE SEMINAR WAS DIRECTED TOWARDS HEALTH CARE PROFESSIONALS INVOLVED IN BREAST CANCER IN MEDICAL, SURGICAL, GYNECOLOGIC, AND RADIATION ONCOLOGY.Expenses $134,191 · revenue $178,000
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 June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990-N on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990-N on file |
IRS record
- EIN
- 73-1392619
- Tax-exempt status
- 501(c)(6): Business league or chamber of commerce
- Donations deductible
- No
- Exempt since
- 1992
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $592,893
- Income (IRS master file)
- $259,213
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-N for 2024 Officer: Patricia Troy Filed under this EIN, most likely by a chapter or affiliate | June 30, 2025 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990 | June 2025 | $196,776 | $181,275 | $592,893 | XML |
| 990-N for 2023 Officer: Pat Troy Filed under this EIN, most likely by a chapter or affiliate | June 30, 2024 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990 | June 2024 | $177,762 | $187,466 | $557,971 | XML |
| 990 | June 2023 | $178,124 | $143,444 | $554,719 | IRS |
| 990 | June 2022 | $209,783 | $136,065 | $491,209 | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990 | June 2019 | – | – | – | IRS |
| 990 | June 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 73-1392619).
Questions about OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC
- What is the EIN of OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC?
- The employer identification number (EIN) of OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC is 73-1392619.
- Is OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 1992.
- Are donations to OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY 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 OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended June 2025.
- Who is the principal officer of OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC?
- The 990 for the year ended June 30, 2025 names DR ADANMA AYANAMBAKKAM.
- Who are the officers and directors of OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC?
- The 990 for the year ended June 30, 2025 lists 10 people; 1 received compensation from the organization, the highest $18,667 (KATHLEEN A MUSSON CAE, EXECUTIVE DIRECTOR).
- How much revenue does OKLAHOMA SOCIETY OF CLINICAL ONCOLOGY INC have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $196,776, expenses of $181,275 and total assets of $592,893 at year end.
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