Nonprofit · EIN 39-1520160
GONSTEAD CLINICAL STUDIES SOCIETY INC
Tax-exempt · SANTA CRUZ, CA 95062
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-EZ | $147,915 | $217,935 | -$70,020 | $186,729 | $0 | $186,729 |
| December 31, 2024 | 990-EZ | $77,920 | $86,805 | -$8,885 | $226,087 | – | $256,749 |
| December 31, 2023 | 990-EZ | $196,271 | $170,097 | $26,174 | $265,634 | – | $265,634 |
Financial details: 990-EZ for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $44,548
- Membership dues
- $103,367
Expenses
- Compensation of officers, directors and key employees
- $109,106
- Salaries, compensation and benefits (total)
- $109,106
- Professional fees and payments to contractors
- $57,739
- Occupancy
- $11,038
- Printing, publications and postage
- $1,169
- Other expenses
- $38,883
- Program services (functional)
- $65,310
Balance sheet and other
- Total assets, start of year
- $256,749
- Total assets, end of year
- $186,729
- Total liabilities, end of year
- $0
- Net assets, end of year
- $186,729
- Cash, savings and investments
- $186,729
- Gross receipts
- $147,915
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 |
|---|---|---|---|
| ROGER COLEMAN DC | DIRECTOR OF RESEARCH | 60 | $52,870 |
| MICHELE HOHMANN | EXECUTIVE SECRETARY | 40 | $44,236 |
| JEANNE TAYLOR DC | EXECUTIVE DIRECTOR | 20 | $12,000 |
| SAMUEL GUNLOGSEN DC | PRESIDENT | 0 | $0 |
| JERRY MENDEZ DC | PAST PRESIDENT | 0 | $0 |
| CHRISTOPHER WADDELL DC | VICE PRESIDENT | 0 | $0 |
| HILARY HOLLON DC | SECRETARY/TREASURER | 0 | $0 |
| STACY ASLAN DC | NONE | 0 | $0 |
| DAVID CURRIE DC | NONE | 0 | $0 |
| JEFFERY DURSKI DC | NONE | 0 | $0 |
| DAVID FOWLER DC | NONE | 0 | $0 |
| DAVID GEARY DC | NONE | 0 | $0 |
| KRISTIN FELLOWS DC | NONE | 0 | $0 |
| DANIEL LYONS DC | NONE | 0 | $0 |
| TONY DEL ANGEL DC | NONE | 0 | $0 |
2 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| JENNIFER ZHU DC | NONE | 0 | $0 |
| DAVID WALLER DC | NONE | 0 | $0 |
990-EZ for the year ended December 31, 2024: 18 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ROGER COLEMAN DC | DIRECTOR OF RESEARCH | 60 | $52,870 |
| MICHELE HOHMANN | EXECUTIVE SECRETARY | 40 | $43,320 |
| JEANNE TAYLOR DC | EXECUTIVE DIRECTOR | 20 | $20,760 |
| JERRY MENDEZ DC | PRESIDENT | 0 | $0 |
| SAMUEL GUNLOGSEN DC | VICE PRESIDENT | 0 | $0 |
| STACY ASLAN DC | DIRECTOR | 0 | $0 |
| DAVID GEARY DC | DIRECTOR | 0 | $0 |
| DANIEL LYONS DC | DIRECTOR | 0 | $0 |
| ROCCO PERUGINI DC | DIRECTOR | 0 | $0 |
| JENNIFER ZHU DC | DIRECTOR | 0 | $0 |
| DAVID WALLER DC | DIRECTOR | 0 | $0 |
| CHRISTOPHER WADDELL DC | SECRETARY TREASURER | 0 | $0 |
| ANDREA CECCHI DC | DIRECTOR | 0 | $0 |
| JEFF DURSKI | DIRECTOR | 0 | $0 |
| DAVID CURRIE DC | DIRECTOR | 0 | $0 |
| KRISTIN FELLOWS DC | DIRECTOR | 0 | $0 |
| DAVID FOELER DC | DIRECTOR | 0 | $0 |
| TONY DEL ANGEL DC | DIRECTOR | 0 | $0 |
990-EZ for the year ended December 31, 2023: 18 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| ROGER COLEMAN DC | DIRECTOR OF RESEARCH | 60 | $0 |
| MICHELE HOHMANN | EXECUTIVE SECRETARY | 40 | $0 |
| JEANNE TAYLOR DC | EXECUTIVE DIRECTOR | 20 | $0 |
| J DAVID CURRIE DC | DIRECTOR | 0 | $0 |
| JERRY MENDEZ DC | PRESIDENT | 0 | $0 |
| SAMUEL GUNLOGSEN DC | VICE PRESIDENT | 0 | $0 |
| STACY ASLAN DC | DIRECTOR | 0 | $0 |
| KRISTIN FELLOWS | DIRECTOR | 0 | $0 |
| DAVID GEARY DC | DIRECTOR | 0 | $0 |
| DANIEL LYONS DC | DIRECTOR | 0 | $0 |
| ROCCO PERUGINI DC | DIRECTOR | 0 | $0 |
| LYDIA DEVER DC | DIRECTOR | 0 | $0 |
| JENNIFER ZHU DC | DIRECTOR | 0 | $0 |
| DAVID WALLER DC | DIRECTOR | 0 | $0 |
| CHRISTOPHER WADDELL DC | SECRETARY TREASURER | 0 | $0 |
| ANDREA CECCHI DC | DIRECTOR | 0 | $0 |
| A DEL ANGEL | DIRECTOR | 0 | $0 |
| JEFF DURSKI | DIRECTOR | 0 | $0 |
Address and contacts
- Address (IRS master file)
- 2260 IVY LANE, SANTA CRUZ, CA 95062-0000
- In care of
- % GONSTEAD CLINICAL STUDIES SO
- Signed the 990-EZ
- JEANNE TAYLOR DC, EXECUTIVE DIRECTOR
- Phone
- (831) 476-1873
- Website
- WWW.GONSTEAD.COM
- Return prepared by
- Block Advisors
California records
California keeps its own records of charities and corporations. Search them by EIN 39-1520160 or by the name GONSTEAD CLINICAL STUDIES SOCIETY INC.
- 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
EDUCATION AND RESEARCH
Program accomplishments
- MEETING OF THE MINDS-RESEARCH COMPENDIUM BI-ANNUAL BOARD OF DIRECTORS MEETINGS 4986>Expenses $8,000
- PUBLISHED RESEARCH PAPERS 52,870 +397 +1,000 +40 > "FACTORS AFFECTING RADIOGRAPHIC FEMUR HEAR MEASUREMENTS" "FURTHER EXPLORATION OF PROPOSED METHODS TO DETERMINE AXIAL ROTATION ON THE AP PELVIC RADIOGRAPH"Expenses $54,307
- SPONSORSHIP OF ASSOCIATION OF CHIROPRACTIC HISTORY ANNUAL CONFERENCEExpenses $3,003
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-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
- 39-1520160
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1986
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Assets (IRS master file)
- $186,729
- Income (IRS master file)
- $147,915
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-EZ | December 2025 | $147,915 | $217,935 | $186,729 | XML |
| 990-EZ | December 2024 | $77,920 | $86,805 | $226,087 | XML |
| 990-EZ | December 2023 | $196,271 | $170,097 | $265,634 | XML |
| 990-EZ | December 2022 | – | – | – | IRS |
| 990-EZ | December 2021 | – | – | – | 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 39-1520160).
Questions about GONSTEAD CLINICAL STUDIES SOCIETY INC
- What is the EIN of GONSTEAD CLINICAL STUDIES SOCIETY INC?
- The employer identification number (EIN) of GONSTEAD CLINICAL STUDIES SOCIETY INC is 39-1520160.
- Is GONSTEAD CLINICAL STUDIES SOCIETY INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1986.
- Are donations to GONSTEAD CLINICAL STUDIES SOCIETY INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does GONSTEAD CLINICAL STUDIES SOCIETY 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 GONSTEAD CLINICAL STUDIES SOCIETY INC 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 GONSTEAD CLINICAL STUDIES SOCIETY INC 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 GONSTEAD CLINICAL STUDIES SOCIETY INC?
- The 990-EZ for the year ended December 31, 2025 lists 17 people; 3 received compensation from the organization, the highest $52,870 (ROGER COLEMAN DC, DIRECTOR OF RESEARCH).
- How much revenue does GONSTEAD CLINICAL STUDIES SOCIETY INC have?
- On its 990-EZ for the year ended December 31, 2025 it reported revenue of $147,915, expenses of $217,935 and total assets of $186,729 at year end.
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