Nonprofit · EIN 23-7444529
MT DIABLO INTERPRETIVE ASSOC
Tax-exempt · WALNUT CREEK, CA 94597
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $394,360 | $325,946 | $68,414 | $1,311,871 | $12,058 | $1,299,813 |
| December 31, 2024 | 990 | $457,098 | $196,696 | $260,402 | $1,234,905 | $2,965 | $1,231,940 |
| December 31, 2023 | 990 | $541,060 | $333,444 | $207,616 | $971,715 | $1,835 | $969,880 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $267,162
- Membership dues
- $1,085
- Program service revenue
- $140
- Investment income
- $33,345
- Net income from sales of inventory
- $93,713
- Other revenue
- $93,713
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
- $7,862
- Program services (functional)
- $303,767
- Management and general (functional)
- $20,394
- Fundraising (functional)
- $1,785
Balance sheet and other
- Total assets, start of year
- $1,234,905
- Total assets, end of year
- $1,311,871
- Total liabilities, end of year
- $12,058
- Net assets, end of year
- $1,299,813
- Net assets without donor restrictions
- $1,299,813
- Gross receipts
- $499,861
- Employees
- 0
- Volunteers
- 35
- Year formed
- 1974
- 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 |
|---|---|---|---|
| LESLIE CONTRERAS | Director Trustee or director | 4 | $0 |
| DANIEL FITZGERALD | Treasurer Trustee or director, Officer | 12 | $0 |
| CAROL LANE | Director Trustee or director | 8 | $0 |
| MIKE BRANDY | Vice President Trustee or director, Officer | 16 | $0 |
| DICK NICOLL | Director Trustee or director | 12 | $0 |
| TERESE DIXON | Director Trustee or director | 8 | $0 |
| STEVE VIARENGO | Director Trustee or director | 4 | $0 |
| JULIE BRAUN MARTIN | Director Trustee or director | 8 | $0 |
| MARK BRAUER | Director Trustee or director | 4 | $0 |
| LINDA KWONG | Director Trustee or director | 4 | $0 |
| DAN SANDRI | Secretary Trustee or director, Officer | 12 | $0 |
| STEVE SMITH | President Trustee or director, Officer | 16 | $0 |
990 for the year ended December 31, 2024: 12 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LESLIE CONTRERAS | Director Trustee or director | 4 | $0 |
| DANIEL FITZGERALD | Treasurer Trustee or director, Officer | 12 | $0 |
| CAROL LANE | Director Trustee or director | 8 | $0 |
| MIKE BRANDY | Vice President Trustee or director, Officer | 16 | $0 |
| DICK NICOLL | Director Trustee or director | 12 | $0 |
| TERESE DIXON | Director Trustee or director | 8 | $0 |
| STACI HOBBET | Director Trustee or director | 4 | $0 |
| JULIE BRAUN MARTIN | Director Trustee or director | 8 | $0 |
| MARK BRAUER | Director Trustee or director | 4 | $0 |
| LINDA KWONG | Director Trustee or director | 4 | $0 |
| DAN SANDRI | Secretary Trustee or director, Officer | 12 | $0 |
| STEVE SMITH | President Trustee or director, Officer | 16 | $0 |
990 for the year ended December 31, 2023: 14 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| LESLIE CONTRERAS | Director Trustee or director | 4 | $0 |
| DANIEL FITZGERALD | Treasurer Trustee or director, Officer | 12 | $0 |
| CAROL LANE | Director Trustee or director | 8 | $0 |
| MIKE BRANDY | Vice President Trustee or director, Officer | 16 | $0 |
| DICK NICOLL | Director Trustee or director | 12 | $0 |
| TERESE DIXON | Director Trustee or director | 8 | $0 |
| STACI HOBBET | Director Trustee or director | 4 | $0 |
| JULIE BRAUN MARTIN | Director Trustee or director | 8 | $0 |
| MARK BRAUER | Director Trustee or director | 4 | $0 |
| LINDA KWONG | Director Trustee or director | 4 | $0 |
| WALLY DE YOUNG | Director Trustee or director | 4 | $0 |
| DAN SANDRI | Secretary Trustee or director, Officer | 12 | $0 |
| HARRY YORK | Director Trustee or director | 4 | $0 |
| STEVE SMITH | President Trustee or director, Officer | 16 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 346, WALNUT CREEK, CA 94597-0346
- Principal officer (990 for 2025)
- DANIEL FITZGERALD, PO BOX 346, WALNUT CREEK, CA 945970346
- Signed the 990
- DAN FITZGERALD, Treasurer
- Phone
- (925) 927-7222
- Website
- MDIA.ORG
- Return prepared by
- Krisch & Company
California records
California keeps its own records of charities and corporations. Search them by EIN 23-7444529 or by the name MT DIABLO INTERPRETIVE ASSOC.
- 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 ASSIST WITH MAINTAINING AND INTERPRETING MOUNT DIABLO STATE PARK, AN ECOLOGICAL TREASURE OF THE SAN FRANCISCO BAY AREA.
Program accomplishments
- EDUCATION CENTER-MDIA IS PARTNERING WITH THE WILDLIFE CONSERVATION BOARD TO DEVELOP THE MITCHELL CANYON VISITOR CENTER PROVIDING VISITORS WITH STATE PARK HISTORY, EDUCATION ABOUT HABITAT AND WILDLIFE, TRAIL MAPS, AND A MEETING POINT FOR ALL VISITORS.Expenses $284,550
- MAINTENANCE OF PARK FACILITIES - FUNDING OF PARK MAINTENANCE PROJECTS AND EVENTS, INCLUDING EARTH DAY AND OTHER PARK RESTORATION EVENTS, TRAIL MAINTENANCE AND SIGNAGE, TRASH REMOVAL AND PURCHASE OF PARK EQUIPMENT.Expenses $8,096
- INTERPRETATION AND OUTREACH - FUNDING OF MERCHANDISING AND OPERATION OF TWO VISITOR CENTERS, VOLUNTEER ASSISTANCE PROGRAMS, SCHOOL AND JR. RANGER PROGRAMS, INTERPRETIVE TALKS AND EVENTS, HIKES, NATIVE PLANT GARDEN, AND INTERPRETIVE WEBSITE.Expenses $5,900
- PUBLICATIONS AND VIDEOS - CREATION, PUBLICATION AND DISTRIBUTION OF INTERPRETIVE PUBLICATIONS AND VIDEOS.Expenses $5,221
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
- 23-7444529
- 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
- 1975
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Recreation and sports (N320)
- Assets (IRS master file)
- $1,311,871
- Income (IRS master file)
- $499,861
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $394,360 | $325,946 | $1,311,871 | XML |
| 990 | December 2024 | $457,098 | $196,696 | $1,234,905 | XML |
| 990 | December 2023 | $541,060 | $333,444 | $971,715 | XML |
| 990 | December 2022 | $284,012 | $76,908 | $764,473 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 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 23-7444529).
Questions about MT DIABLO INTERPRETIVE ASSOC
- What is the EIN of MT DIABLO INTERPRETIVE ASSOC?
- The employer identification number (EIN) of MT DIABLO INTERPRETIVE ASSOC is 23-7444529.
- Is MT DIABLO INTERPRETIVE ASSOC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1975.
- Are donations to MT DIABLO INTERPRETIVE ASSOC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does MT DIABLO INTERPRETIVE ASSOC 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 MT DIABLO INTERPRETIVE ASSOC 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 MT DIABLO INTERPRETIVE ASSOC 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 MT DIABLO INTERPRETIVE ASSOC?
- The 990 for the year ended December 31, 2025 names DANIEL FITZGERALD.
- Who are the officers and directors of MT DIABLO INTERPRETIVE ASSOC?
- The 990 for the year ended December 31, 2025 lists 12 people; 0 received compensation from the organization.
- How much revenue does MT DIABLO INTERPRETIVE ASSOC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $394,360, expenses of $325,946 and total assets of $1,311,871 at year end.
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All nonprofits in WALNUT CREEK · California · Recreation and sports