Nonprofit · EIN 83-4336436
CALIFORNIA MEDICAL BILLING ADVOCATES
Tax-exempt · SAN FRANCISCO, CA 94102
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $4,300 | $5,119 | -$819 | $1,151 | $0 | $1,151 |
| December 31, 2024 | 990-EZ | $454 | $5,872 | -$5,418 | $1,970 | $0 | $1,970 |
| December 31, 2023 | 990-EZ | $18 | $5,424 | -$5,406 | $7,574 | $186 | $7,388 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $4,300
- Program service revenue
- $0
- Investment income
- $0
- 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 fees and payments to contractors
- $3,115
- Occupancy
- $2,004
- Program services (functional)
- $5,119
Balance sheet and other
- Total assets, start of year
- $1,970
- Total assets, end of year
- $1,151
- Total liabilities, end of year
- $0
- Net assets, end of year
- $1,151
- Cash, savings and investments
- $1,151
- Gross receipts
- $4,300
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 |
|---|---|---|---|
| Gary K Ko | President and Chairperson of the Board | 20 | $0 |
| Canyon A Chan | Treasurer and Secretary | 1 | $0 |
990-EZ for the year ended December 31, 2024: 2 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Gary K Ko | President and Chairperson of the Board | 10 | $0 |
| Canyon A Chan | Treasurer and Secretary | 1 | $0 |
990-EZ for the year ended December 31, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Gary K Ko | President and Chairperson of the Board | 5 | $0 |
| Canyon A Chan | Treasurer and Secretary | 0.25 | $0 |
| Jaime S King | Board Member | 0.1 | $0 |
| Daniel P Dohan | Board Member | 0.1 | $0 |
Address and contacts
- Address (IRS master file)
- 1390 MARKET ST STE 200, SAN FRANCISCO, CA 94102-5404
- Signed the 990-EZ
- Gary Ko, President
- Phone
- (415) 632-3316
- Website
- www.calmba.org
California records
California keeps its own records of charities and corporations. Search them by EIN 83-4336436 or by the name CALIFORNIA MEDICAL BILLING ADVOCATES.
- 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
To reduce or eliminate unjust medical bills before they become crippling debt.
Program accomplishments
- Medical Bills Negotiation and Financial Education: Given the complexity of the U.S. healthcare system, patients often receive surprise medical bills despite having health insurance. Furthermore, many patients who are underinsured or uninsured receive grossly inflated medical bills directly from hospitals and doctors. Many patients cannot afford to pay these bills and let them turn into medical debt, which is one of the leading causes of personal bankruptcy in the U.S. CALMBA believes that many of these bills are excessive and unjust to the patient. CALMBA's mission is to reduce or eliminate medical bills, by negotiating lower medical bills on the patient's behalf using financial, legal, and medical tactics. CALMBA focuses its efforts on helping economically disadvantaged, low income, and poor patients. CALMBA started operations at the end of September 2019. During 2019, CALMBA received 271 inquiries for assistance with medical bills, of which we accepted 161 cases totaling $3.7 million in medical bills. For the cases that completed negotiations in 2019, the average bill reduction was $6,400 per patient, while the estimated cost to negotiate the case averaged $350, for an 18x social return on investment. As part of the medical bill negotiation process, CALMBA develops a deep understanding of the patients' financial profile, including income, expenses, and assets. As a result, CALMBA also offers patients financial advice and education on financial literacy, budgeting, and debt management with the goal of putting the patient on a more stable financial footing going forward.Expenses $5,119 · grants $4,300
What it must file and when
IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. 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-EZ on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-EZ on file |
IRS record
- EIN
- 83-4336436
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2019
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
- Category (NTEE)
- Public and societal benefit (W22)
- Assets (IRS master file)
- $1,151
- Income (IRS master file)
- $4,300
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $4,300 | $5,119 | $1,151 | IRS |
| 990-EZ | December 2024 | $454 | $5,872 | $1,970 | IRS |
| 990-EZ | December 2023 | $18 | $5,424 | $7,574 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | IRS |
| 990-EZ | December 2020 | – | – | – | IRS |
| 990-EZ | December 2019 | – | – | – | 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 83-4336436).
Questions about CALIFORNIA MEDICAL BILLING ADVOCATES
- What is the EIN of CALIFORNIA MEDICAL BILLING ADVOCATES?
- The employer identification number (EIN) of CALIFORNIA MEDICAL BILLING ADVOCATES is 83-4336436.
- Is CALIFORNIA MEDICAL BILLING ADVOCATES tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2019.
- Are donations to CALIFORNIA MEDICAL BILLING ADVOCATES tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does CALIFORNIA MEDICAL BILLING ADVOCATES file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of CALIFORNIA MEDICAL BILLING ADVOCATES 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 CALIFORNIA MEDICAL BILLING ADVOCATES last file with the IRS?
- The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
- Who are the officers and directors of CALIFORNIA MEDICAL BILLING ADVOCATES?
- The 990-EZ for the year ended December 31, 2025 lists 2 people; 0 received compensation from the organization.
- How much revenue does CALIFORNIA MEDICAL BILLING ADVOCATES have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $4,300, expenses of $5,119 and total assets of $1,151 at year end.
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