Nonprofit · EIN 80-0663884
LAC USC ATTENDING STAFF ASSOCIATION
Tax-exempt (reinstated) · LOS ANGELES, CA 90033
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $742,350 | $596,622 | $145,728 | $882,364 | $0 | $882,364 |
| December 31, 2024 | 990 | $561,460 | $451,656 | $109,804 | $750,925 | $0 | $750,925 |
| December 31, 2023 | 990 | $351,644 | $305,947 | $45,697 | $641,121 | $0 | $641,121 |
| December 31, 2022 | 990 | $197,450 | $171,493 | $25,957 | $595,424 | $0 | $595,424 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $742,350
- of which government grants
- $695,000
- Membership dues
- $42,350
- Program service revenue
- $0
- Investment income
- $0
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Legal fees
- $23,463
- Accounting fees
- $5,125
- Travel
- $36
- Depreciation
- $9,828
Balance sheet and other
- Total assets, start of year
- $750,925
- Total assets, end of year
- $882,364
- Total liabilities, end of year
- $0
- Net assets, end of year
- $882,364
- Land, buildings and equipment
- $18,500
- Net assets without donor restrictions
- $882,364
- Gross receipts
- $742,350
- Employees
- 0
- Volunteers
- 0
- Year formed
- 2010
- State of legal domicile
- CA
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 December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| TAMARA CHAMBERS MD | PRESIDENT Officer | 0 | $0 |
| CARIN VAN ZYL MD | VICE PRESIDIENT Officer | 0 | $0 |
| DR JOSH BANERJEE MD | TREASURY Officer | 0 | $0 |
| LYDIA LAM MD | IMMEDIATE PAST PRESIDENT Officer | 0 | $0 |
990 for the year ended December 31, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LYDIA LAM MD | CHIEF OF STAFF/PRESIDENT Officer | 0 | $0 |
| RICHARD JENNELLE MD | IMMEDIATE PAST CHIEF OF ST Officer | 0 | $0 |
| TAMARA CHAMBERS MD | VICE CHIEF Officer | 0 | $0 |
| CARIN VAN ZYL MD | SECRETARY/TREASURY Officer | 0 | $0 |
990 for the year ended December 31, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LYDIA LAM MD | CHIEF OF STAFF/PRESIDENT Officer | 0 | $0 |
| RICHARD JENNELLE MD | IMMEDIATE PAST CHIEF OF ST Officer | 0 | $0 |
| TAMARA CHAMBERS MD | VICE CHIEF Officer | 0 | $0 |
| CARIN VAN ZYL MD | SECRETARY/TREASURY Officer | 0 | $0 |
990 for the year ended December 31, 2022: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| RICHARD JENNELLE M D | CHIEF OF STAFF/PRESIDENT Officer | 0 | $0 |
| JOHN DONOVAN MD | IMMEDIATE PAST CHIEF OF ST Officer | 0 | $0 |
| LYDIA LAM M D | CHIEF OF STAFF/PRESIDENT-E Officer | 0 | $0 |
| TAMARA CHAMBERS MD | SECRETARY/TREASURY Officer | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 1200 N STATE CLINIC TOWER STE 2B3, LOS ANGELES, CA 90033-0000
- In care of
- % RODOLFO AMAYA
- Mailing address (990-N for 2015)
- 1200 N State St Clinic Tower, Los Angeles CA 90033
- Principal officer (990 for 2025)
- DR TAMARA CHAMBERS MD, 1200 N STATE CLINIC TOWER STE 2B3, LOS ANGELES, CA 90033
- Principal officer (990-N for 2015)
- Rodolfo Amaya, 1200 N State St, Los Angeles CA 90033
- Signed the 990
- DR TAMARA CHAMBERS MD, PRESIDENT
- Phone
- (323) 409-4040
- Return prepared by
- CRI ADVISORS LLC
California records
California keeps its own records of charities and corporations. Search them by EIN 80-0663884 or by the name LAC USC ATTENDING STAFF ASSOCIATION.
- 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
PROVIDE AND OVERSEE THE MEDICAL CARE RECEIVED BY PATIENTS AT LAC + USC MEDICAL CENTER AND ASSOCIATED CLINICS AS REQUIRED IN CCR TITLE 22 70701 AND CALIFORNIA BUSINESS AND PROFESSIONS CODE SECTION 2282 AND 2282.5.
Program accomplishments
- THE ASSOCIATION'S FINANCIAL SUPPORT COMES PRIMARILY FROM MEMBER DUES COLLECTED AT THE TIME OF A NEW STAFF APPOINTMENT OR RE-APPOINTMENT, WHICH OCCURS EVERY TWO YEARS. THE ASSOCIATION CAN RECEIVE OTHER SOURCES OF INCOME. IN RECENT YEARS, THE ASSOCIATION HAS RECEIVED SEVERAL EDUCATIONAL GRANTS.
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 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 80-0663884
- Tax-exempt status
- 501(c)(6): Business league or chamber of commerce
- Donations deductible
- No
- Exempt since
- 2022
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Voluntary health associations and medical disciplines (G03)
- Assets (IRS master file)
- $882,364
- Income (IRS master file)
- $742,350
Revocation and reinstatement
- Exemption revoked
- May 15, 2019
- Posted by the IRS
- August 21, 2019
- Reinstated
- Effective May 15, 2019
From the IRS automatic revocation list: organizations that did not file a required return or e-Postcard for three consecutive years.
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $742,350 | $596,622 | $882,364 | XML |
| 990 | December 2024 | $561,460 | $451,656 | $750,925 | XML |
| 990 | December 2023 | $351,644 | $305,947 | $641,121 | XML |
| 990 | December 2022 | $197,450 | $171,493 | $595,424 | XML |
| 990-N for 2015 Officer: Rodolfo Amaya | December 31, 2015 | ≤ $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 80-0663884).
Questions about LAC USC ATTENDING STAFF ASSOCIATION
- What is the EIN of LAC USC ATTENDING STAFF ASSOCIATION?
- The employer identification number (EIN) of LAC USC ATTENDING STAFF ASSOCIATION is 80-0663884.
- Is LAC USC ATTENDING STAFF ASSOCIATION tax-exempt?
- Yes. The IRS revoked its exemption on May 15, 2019 and reinstated it effective May 15, 2019.
- Are donations to LAC USC ATTENDING STAFF ASSOCIATION tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does LAC USC ATTENDING STAFF ASSOCIATION 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 LAC USC ATTENDING STAFF ASSOCIATION 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 LAC USC ATTENDING STAFF ASSOCIATION last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of LAC USC ATTENDING STAFF ASSOCIATION?
- The 990 for the year ended December 31, 2025 names DR TAMARA CHAMBERS MD.
- Who are the officers and directors of LAC USC ATTENDING STAFF ASSOCIATION?
- The 990 for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does LAC USC ATTENDING STAFF ASSOCIATION have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $742,350, expenses of $596,622 and total assets of $882,364 at year end.
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