Nonprofit · EIN 92-1991557
CORAL REEF DIAGNOSTICS
Tax-exempt · MIAMI, FL 33129
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $5,000 | $19,257 | -$14,257 | $0 | $55,102 | -$55,102 |
| December 31, 2024 | 990-EZ | $0 | $36,713 | -$36,713 | $0 | $40,845 | -$40,845 |
| December 31, 2023 | 990-EZ | $276 | $4,408 | -$4,132 | $0 | $4,132 | -$4,132 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $0
- Program service revenue
- $5,000
- Investment income
- $0
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $13
- Benefits paid to members
- $105
- Compensation of officers, directors and key employees
- $0
- Salaries, compensation and benefits (total)
- $0
- Professional fees and payments to contractors
- $95
- Printing, publications and postage
- $2,277
- Other expenses
- $16,767
- Program services (functional)
- $19,258
Balance sheet and other
- Total assets, start of year
- $0
- Total assets, end of year
- $0
- Total liabilities, end of year
- $55,102
- Net assets, end of year
- -$55,102
- Gross receipts
- $5,000
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 |
|---|---|---|---|
| Anderson Mayfield | CEO | 80 | $0 |
| Pei-Ciao Tang | president | 1 | $0 |
| Joy Mayfield | vice president | 1 | $0 |
990-EZ for the year ended December 31, 2024: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Anderson Mayfield | CEO | 80 | $0 |
| Pei-Ciao Tang | president | 1 | $0 |
| Joy Mayfield | vice president | 1 | $0 |
990-EZ for the year ended December 31, 2023: 3 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Anderson Mayfield | CEO | 20 | $0 |
| Pei-Ciao Tang | president | 2 | $0 |
| Joy Mayfield | vice president | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 150 SE 25TH RD APT 5I, MIAMI, FL 33129-2403
- In care of
- % ANDERSON MAYFIELD
- Signed the 990-EZ
- Anderson Mayfield, president
- Phone
- (786) 898-4447
- Website
- www.coralreefdiagnostics.com
Mission
We are a coral reef conservation research institute dedicated to providing services that will help save coral reefs. Unfortunately, we went with the "you've gotta spend money to make money" approach, whereby we did primarily pro bono consulting work. This led to approximately a ~$14,000 net loss in income over the course of the year. We did secure a $5,000 award to help with analysis of marine biology data (data analysis being amongst our core serfices).
Program accomplishments
- We conducted a number of coral reef field surveys pro bono to help developing countries manage their coral reefs: Mauritius, Mexico, and several others. I am hoping this "spend money to make money" approach (good karma) will help get for-pay survey and diagnostic contracts in 2026 and beyond.Expenses $9,629
- As described elsewhere, we also attended several coral reef and marine conservation-focused conferenced at our own expenses to advance our mission of saving coral reefs.Expenses $9,629
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
- 92-1991557
- 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
- 2023
- Accounting year ends
- December
- Files
- Form 990-N (e-Postcard)
- Category (NTEE)
- Animal-related (D30)
- Assets (IRS master file)
- $1
- Income (IRS master file)
- $5,000
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $5,000 | $19,257 | $0 | XML |
| 990-EZ | December 2024 | $0 | $36,713 | $0 | XML |
| 990-EZ | December 2023 | $276 | $4,408 | $0 | XML |
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 92-1991557).
Questions about CORAL REEF DIAGNOSTICS
- What is the EIN of CORAL REEF DIAGNOSTICS?
- The employer identification number (EIN) of CORAL REEF DIAGNOSTICS is 92-1991557.
- Is CORAL REEF DIAGNOSTICS tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2023.
- Are donations to CORAL REEF DIAGNOSTICS tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does CORAL REEF DIAGNOSTICS file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of CORAL REEF DIAGNOSTICS 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 CORAL REEF DIAGNOSTICS 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 CORAL REEF DIAGNOSTICS?
- The 990-EZ for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
- How much revenue does CORAL REEF DIAGNOSTICS have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $5,000, expenses of $19,257 and total assets of $0 at year end.
Other nonprofits in MIAMI
- ZOO MIAMI FOUNDATION INC EIN 59-6192814 · last filed 990 for 2025
- ONCAFARI INTERNATIONAL INC EIN 46-1206416 · last filed 990 for 2025
- PELICAN HARBOR SEABIRD STATION INC EIN 59-2137331 · last filed 990 for 2024
- BONEFISH & TARPON TRUST INC EIN 65-0988321 · last filed 990 for 2025
- ANIMAL WELFARE SOCIETY OF SOUTH FLORIDA INC EIN 59-1557645 · last filed 990 for 2024
- STREET CAT CLINIC INC EIN 99-2128850 · last filed 990 for 2025
- PAWS 4 YOU RESCUE INC EIN 77-0676135 · last filed 990 for 2024
- BALAM FOUNDATION INCORPORATED EIN 86-1253093 · last filed 990 for 2025