Hepatitis B Foundation
The mission of the Hepatitis B Foundation is to find a cure for hepatitis b and improve the quality of life for those affected worldwide through research, education and patient advocacy.
Hepatitis B Foundation at a glance
- Total assets
- $20,490,190
- -2.5% vs 2024
- Revenue (2025)
- $3,466,580
- +10.2% vs 2024
- Net investment income (2025)
- $293,070
- +260.5% vs 2024
- Expenses (2025)
- $3,250,824
- +4.9% vs 2024
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
Who Hepatitis B Foundation funds
How this funder distributes its grants
Grant Size Distribution
27 grants across all recorded years
The most common grant size was under $50K: 27 grants of 27 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
How Hepatitis B Foundation gives
- Giving held roughly steady from 2021 to 2024 (−2%). Method
From the foundation's IRS Form 990 filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2024, annual grant giving ranged from $54K (2024) to $86K (2023). In 2024 it made 6 grants totaling $54K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| SF Hep B Free-Bay Area San Francisco, CA | Funding to coalition partners for public awareness and outreach programs | $9,000 |
| Korean Community Services of Metro NY Bayside, NY | Funding to coalition partners for public awareness and outreach programs | $9,000 |
| Asian American Health Coalition of Greater Houston Houston, TX | Funding to coalition partners for public awareness and outreach programs | $9,000 |
| Hepatitis B Initiative of Washington DC Washington, DC | Funding to coalition partners for public awareness and outreach programs | $9,000 |
| Drexel Hope Philadelphia, PA | Funding to coalition partners for public awareness and outreach programs | $9,000 |
| Asian American Community Services Upper Arlington, OH | Funding to coalition partners for public awareness and outreach programs | $9,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $20,490,190 | $3,466,580 | $3,250,824 | — | — | $293,070 |
| 2024 | $21,006,989 | $3,147,035 | $3,098,136 | $54,000 | 6 | $81,306 |
| 2023 | $20,224,712 | $2,988,379 | $2,845,275 | $86,000 | 9 | $-55,474 |
| 2022 | $16,299,322 | $2,640,688 | $2,374,928 | $57,500 | 6 | $259,698 |
| 2021 | $11,952,203 | $2,860,673 | $1,701,619 | $55,000 | 6 | $744,790 |
| 2020 | $10,026,183 | $2,054,940 | $1,873,880 | $60,000 | 6 | $82,643 |
| 2019 | $9,602,199 | $1,945,843 | $1,854,464 | $55,000 | 7 | $100,308 |
About Hepatitis B Foundation
Based on IRS filings
Hepatitis B Foundation is a public charity focused on Diseases, Disorders & Medical Disciplines, based in Doylestown, PA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $20.5M in total assets. Net investment income was $293K.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
Hepatitis B Foundation is led by Louis P. Kassa Iii Mpa, Chief Executive Officer on every filing since 2022; 2 of 20 officers listed in 2025 are compensated.
Officers on the 2025 filing
Louis P. Kassa Iii Mpa
Chief Executive Officer
On filings since 2022
10 hrs/week
No compensation reported
Chari Cohen PhD
President
Senior Vice President → President, 2023
On filings since 2019
40 hrs/week
$104K (2019) → $220K (2025)
Timothy M. Block PhD
Chairman
President & CEO → Chairman, 2023
On filings since 2019
0.5 hrs/week
No compensation reported
Carol Brosgart MD
Director
On filings since 2019
0.5 hrs/week
No compensation reported
David Gruber CPA
Director
On filings since 2019
0.5 hrs/week
No compensation reported
Nathaniel Brown MD
Director
On filings since 2019
0.5 hrs/week
No compensation reported
Raman Kapur MBA
Director
On filings since 2019
0.5 hrs/week
No compensation reported
Stanley Broadbent
Director
On filings since 2019
0.5 hrs/week
No compensation reported
Su Wang MD MPH
Director
On filings since 2019
0.5 hrs/week
No compensation reported
Walter Tsou MD
Director
On filings since 2019
0.5 hrs/week
No compensation reported
Lewis Roberts Mb Chb PhD
Director
On filings since 2020
0.5 hrs/week
No compensation reported
Mark Petty
Director
On filings since 2020
0.5 hrs/week
No compensation reported
Elizabeth Sigety
Director
On filings since 2023
0.5 hrs/week
No compensation reported
Gang Chen MD PhD
Director
On filings since 2024
0.5 hrs/week
No compensation reported
Lillian Chiang PhD MBA
Director
On filings since 2024
0.5 hrs/week
No compensation reported
Lu-Yu Hwang MD
Director
On filings since 2024
0.5 hrs/week
No compensation reported
Heather Davis
Director
New on the 2025 filing
0.5 hrs/week
No compensation reported
Joe Erckert
Chief Development Officer
New on the 2025 filing
40 hrs/week
$111K (2025)
Joel Rosen Esq.
Vice Chair
Chairman → Vice Chair, 2023
On filings since 2019
0.5 hrs/week
No compensation reported
Elizabeth Seeber MBA
Treasurer
On filings since 2022
0.5 hrs/week
No compensation reported
Former officers (9)
- Former: Anthony Ford-Hutchinson PhD (2019–2024) — Director
- Former: Wayne Yetter MBA (2019–2024) — Secretary
- Former: Catharine Williams Mga (2022–2024) — Vice Chair
- Former: Craig Esterly MBA (2019–2023) — Director
- Former: Loren Danzis Esq. (2019–2023) — Director
- Former: Thomas Shenk PhD (2019–2023) — Director
- Former: Catharine Williams (2019–2021) — Vice President
- Former: Joseph Hediger MBA (2019–2021) — Treasurer
- Former: Lou Kassa (2019–2021) — Chief Operating Officer & Executive Vice President
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $220K, to Chari Cohen PHD (President). 2 officers or directors reported compensation on that filing.
Frequently asked questions about Hepatitis B Foundation
How large is Hepatitis B Foundation?
Hepatitis B Foundation reported $20.5M in total assets on its 2025 IRS Form 990. Its revenue that year was $3.5M.
What is Hepatitis B Foundation?
Hepatitis B Foundation is a public charity focused on Diseases, Disorders & Medical Disciplines, based in Doylestown, PA. It holds $20.5M in total assets as of 2025.
Where does Hepatitis B Foundation operate?
Hepatitis B Foundation has awarded grants in Arkansas, California, Colorado, District of Columbia, Hawaii, Illinois, Massachusetts, New Jersey, New York, Ohio, Pennsylvania, Texas, Virginia, Washington.
What is Hepatitis B Foundation's EIN?
Hepatitis B Foundation's EIN (Employer Identification Number) is 23-2655669. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2019–2025
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Browse active grant opportunities in Hepatitis B Foundation's focus areas in our free grants database
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Hepatitis B Foundation down — hundreds of funders to go?