Nonprofit · EIN 04-2203836
JOSLIN DIABETES CENTER INC
Tax-exempt · CHARLESTOWN, MA 02129
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| September 30, 2025 | 990 | $77,259,482 | $88,177,463 | -$10,917,981 | $182,656,365 | $13,966,436 | $168,689,929 |
| September 30, 2024 | 990 | $71,591,609 | $81,626,334 | -$10,034,725 | $176,840,438 | $16,232,154 | $160,608,284 |
| September 30, 2023 | 990 | $74,197,360 | $82,769,482 | -$8,572,122 | $166,005,908 | $11,991,387 | $154,014,521 |
Financial details: 990 for the year ended September 30, 2025
Revenue
- Contributions, gifts and grants
- $37,163,837
- of which government grants
- $26,258,542
- Program service revenue
- $36,227,356
- Investment income
- $3,167,475
- Royalties
- $462,453
- Net rental income
- $248,752
- Net gain from sales of assets
- $1,152,711
- Net income from fundraising events
- -$398,944
- Other revenue
- $700,814
Expenses
- Grants and similar amounts paid
- $11,078,365
- Compensation of officers, directors and key employees
- $2,799,392
- Other salaries and wages
- $15,145,302
- Salaries, compensation and benefits (total)
- $27,893,777
- Professional fundraising fees
- $0
- Legal fees
- $286,006
- Accounting fees
- $815
- Occupancy
- $3,185,297
- Travel
- $409,690
- Depreciation
- $5,536,047
- Program services (functional)
- $70,301,167
- Management and general (functional)
- $17,861,130
- Fundraising (functional)
- $15,166
Balance sheet and other
- Total assets, start of year
- $176,840,438
- Total assets, end of year
- $182,656,365
- Total liabilities, end of year
- $13,966,436
- Net assets, end of year
- $168,689,929
- Land, buildings and equipment
- $43,900,744
- Publicly traded securities
- $72,633,415
- Net assets without donor restrictions
- $62,452,040
- Net assets with donor restrictions
- $106,237,889
- Gross unrelated business income
- $175,425
- Gross receipts
- $78,402,620
- Employees
- 499
- Volunteers
- 12
- Year formed
- 1950
- State of legal domicile
- MA
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 September 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| TABB MD KEVIN | CEO (EX-OFF) (CEO, BILH) Officer | 1 | $0 | $3,665,891 | $1,068,480 |
| RIOS CINDY | TREAS (EX-OFF) (EXEC VP & CFO, BILH) Officer | 1 | $0 | $1,386,253 | $2,208,450 |
| HEALY PETER | TTEE (EXO) (DIV PRES, METRO BOSTON) Trustee or director | 1 | $0 | $1,396,570 | $60,310 |
| KATZ ESQ JAMIE | CLERK (EX-OFF); BILH GENERAL COUNSEL Officer | 1 | $0 | $1,001,061 | $33,790 |
| HERMAN MD PHD ROBERTA | PRESIDENT & TRUSTEE (EX-OFFICIO) Trustee or director, Officer | 55 | $950,464 | $0 | $59,615 |
| SUN MD MPH JENNIFER K | CHIEF, CENTER EYE RESEARCH & TRIALS Highest-paid employee | 55 | $650,131 | $0 | $54,219 |
| FRANCIOLI CARL | TREAS EX-OF; BILH INTRM CFO/BSTN CFO Officer | 1 | $0 | $558,652 | $54,959 |
| KING MD GEORGE L | TTEE EXOFF; SVP CHIEF SCIENTIFIC OFF Trustee or director | 55 | $453,537 | $0 | $61,875 |
| KAHN MD RONALD C | CHIEF ACADEMIC OFFICER Key employee | 55 | $411,511 | $0 | $64,708 |
| AIELLO PHD LLOYD-PAUL | FORMER VICE PRESIDENT, OPTHAMOLOGY Former | 0 | $401,729 | $0 | $55,294 |
| LIT SUSAN | CHIEF OPERATING OFFICER Key employee | 55 | $386,465 | $0 | $42,882 |
| SHARUK MD GEORGE S | OPHTHALMOLOGIST Highest-paid employee | 55 | $333,233 | $0 | $59,971 |
| MEHTA MD SANJEEV | TTEE & SVP, CMO, CMIO, CHF QUAL OFF Trustee or director | 55 | $315,643 | $0 | $52,692 |
| SCHLOSSMAN MD DEBORAH | OPHTHALMOLOGIST Highest-paid employee | 55 | $297,251 | $0 | $51,540 |
| WILLIAMS MD MARK | NEPHROLOGIST Highest-paid employee | 55 | $291,452 | $0 | $55,000 |
17 more people on this return
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| BHOGADI SATISH | ASST TREAS (EX-OFF) & CFO Officer | 1 | $0 | $325,132 | $9,773 |
| SCHAFFER MD JEAN E | SR INVESTIGATOR & ASSOC RESEARCH DIR Highest-paid employee | 55 | $301,945 | $0 | $29,610 |
| MCINTIRE ESQ WILLIAM | ASST CLERK (ASST GEN COUNSEL, BILH) Officer | 1 | $0 | $173,112 | $30,573 |
| PASQUALINI MARTIN | TRUSTEE & CHAIR Trustee or director, Officer | 1 | $0 | $0 | $0 |
| ABBRECHT TODD | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| BRAY CHRISTINE | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| DEVLIN MICHAEL K | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| ENRIGHT RYAN | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| LAGASSE ANNE M | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| MEININGER MD GARY | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| MOSES MD ALAN | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| POLONSKY MD KENNETH | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| SANNA PHD BASTIANO | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| WELO KRISTEN | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| WING LEVERETT | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| YEE SHUNEE | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| HERNDON MBA CPA FACHE SCOTT | TREAS (EX-OFF) (EXEC VP & CFO, BILH) Officer | 1 | $0 | $0 | $0 |
990 for the year ended September 30, 2024: 29 people
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| TABB MD KEVIN | CEO (EX-OFF) (CEO, BILH) Officer | 1 | $0 | $4,313,387 | $1,097,028 |
| ROWAN MICHAEL | TTEE(EXO)(CEO DESIG)EVP HOS&AMB BILH Trustee or director | 1 | $0 | $2,302,117 | $2,401,778 |
| RIOS CINDY | TREAS (EX-OFF) (EXEC VP & CFO, BILH) Officer | 1 | $0 | $1,471,427 | $217,736 |
| HEALY PETER | TTEE (EXO) (DIV PRES, METRO BOSTON) Trustee or director | 1 | $0 | $1,597,609 | $84,548 |
| KATZ ESQ JAMIE | CLERK (EX-OFF); GENERAL COUNSEL BILH Officer | 1 | $0 | $1,270,175 | $32,002 |
| HERMAN MD PHD ROBERTA | PRESIDENT & TRUSTEE (EX-OFFICIO) Trustee or director, Officer | 55 | $919,763 | $0 | $46,710 |
| KING MD GEORGE L | TTEE (EX-OFF); CHIEF SCIENTIFIC OFF Trustee or director | 55 | $431,435 | $0 | $59,803 |
| KAHN MD RONALD C | CHIEF ACADEMIC OFFICER Key employee | 55 | $412,111 | $0 | $62,429 |
| SUN MD MPH JENNIFER K | CHIEF, CENTER EYE RESEARCH & TRIALS Highest-paid employee | 55 | $398,845 | $0 | $52,301 |
| AIELLO PHD LLOYD-PAUL | FORMER VICE PRESIDENT, OPTHAMOLOGY Former | 0 | $388,625 | $0 | $53,432 |
| LIT SUSAN | CHIEF OPERATING OFFICER Key employee | 55 | $324,547 | $0 | $75,035 |
| LARRABEE MD JOAN | PHYS, ENDOCRINE/DIABETES/METABOLISM Highest-paid employee | 55 | $313,047 | $0 | $60,902 |
| SHARUK MD GEORGE S | OPHTHALMOLOGIST Highest-paid employee | 55 | $315,829 | $0 | $58,117 |
| HAMDY MD MPH OSAMA | PHYS, ENDOCRINE/DIABETES/METABOLISM Highest-paid employee | 55 | $301,429 | $0 | $61,348 |
| HALPRIN MD ELIZABETH | SECTION CHIEF, ADULT DIABETES Highest-paid employee | 55 | $303,671 | $0 | $57,759 |
| ARMSTRONG ESQ EMILY | ASST CLERK (DIV VP DEP GC BOS, BILH) Officer | 1 | $0 | $309,666 | $41,550 |
| MEHTA MD SANJEEV | TTEE & SVP, CMO, CMIO, CHF QUAL OFF Trustee or director | 55 | $288,244 | $0 | $53,019 |
| BUCKLEY ESQ MARIA D | FORMER CLERK, GENERAL COUNSEL Former | 0 | $231,268 | $0 | $13,068 |
| BHOGADI SATISH | ASST TREAS (EX-OFF) & ASSISTANT CFO Officer | 55 | $220,276 | $0 | $11,647 |
| PASQUALINI MARTIN | TRUSTEE & CHAIR Trustee or director, Officer | 1 | $0 | $0 | $0 |
| ABBRECHT TODD | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| DEVLIN MICHAEL K | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| ENRIGHT RYAN | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| MOSES MD ALAN | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| POLONSKY MD KENNETH | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| SANNA PHD BASTIANO | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| WELO KRISTEN | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| WING LEVERETT | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| YEE SHUNEE | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
990 for the year ended September 30, 2023: 32 people
| Name | Title | Hours / week | Compensation | From related orgs | Other / benefits |
|---|---|---|---|---|---|
| TABB MD KEVIN | CEO (EX-OFFICIO) Officer | 1 | $0 | $2,507,235 | $299,917 |
| ROWAN MICHAEL | TRUSTEE (EX-OFFICIO) (CEO DESIGNEE) Trustee or director | 1 | $0 | $1,298,835 | $37,039 |
| KERNDL JOHN | TREAS (EX-OFF) (EVP & CFO, BILH) Officer | 1 | $0 | $1,301,463 | $34,409 |
| RIOS CINDY | TREAS (EX-OFF) (INTERIM CFO, BILH) Officer | 1 | $0 | $802,046 | $220,936 |
| KATZ ESQ JAMIE | CLERK (EX-OFFICIO), GENERAL COUNSEL BILH Officer | 1 | $0 | $898,193 | $15,864 |
| HERMAN MD PHD ROBERTA | PRESIDENT & TRUSTEE (EX-OFFICIO) Trustee or director, Officer | 30 | $757,948 | $0 | $24,643 |
| BUCKLEY ESQ MARIA D | FORMER CLERK, GENERAL COUNSEL Former | 0 | $440,860 | $0 | $254,964 |
| KING MD GEORGE L | TTEE (EX-OFF); CHIEF SCIENTIFIC OFF Trustee or director | 56 | $422,752 | $0 | $57,033 |
| KAHN MD RONALD C | CHIEF ACADEMIC OFFICER Key employee | 55 | $412,206 | $0 | $59,964 |
| AIELLO PHD LLOYD-PAUL | FORMER VICE PRESIDENT, OPTHAMOLOGY Former | 55 | $383,800 | $0 | $50,304 |
| MEHTA MD SANJEEV | TTEE(EX-OFF),SVP,CMO,CMIO, GEN & EPI Trustee or director | 56 | $283,753 | $0 | $50,065 |
| LIT SUSAN | CHIEF OPERATING OFFICER Key employee | 55 | $302,010 | $0 | $15,761 |
| D'ERRICO MATTHEW | CHIEF INFORMATION OFFICER Highest-paid employee | 55 | $285,778 | $0 | $19,866 |
| ARMSTRONG ESQ EMILY | ASST CLERK(EX-OFF), AVP,ASST DEP GC Officer | 1 | $0 | $268,218 | $37,005 |
| HARPEL SHARON | VP OFFICE SPONSORED RESEARCH Highest-paid employee | 55 | $275,435 | $0 | $29,052 |
| COTE ELIZABETH R | CHIEF DEVELOPMENT OFFICER Highest-paid employee | 55 | $280,302 | $0 | $12,853 |
| DIFIORE DAVID C | VP CLINICAL SERVICES Highest-paid employee | 55 | $252,961 | $0 | $7,223 |
| O'DONNELL DEBORAH F | DIR, PROJ MGMT & PROCESS IMPROVEMENT Highest-paid employee | 55 | $190,329 | $0 | $24,422 |
| BHOGADI SATISH | ASST CFO & ASST TREAS (EX-OFF) Officer | 1 | $0 | $180,314 | $14,912 |
| LURIER ELIOT M | FORMER CFO, TREASURER Former | 0 | $174,314 | $0 | $12,774 |
| LAGASSE ANNE M | CHAIR AND TRUSTEE Trustee or director, Officer | 1 | $0 | $0 | $0 |
| PASQUALINI MARTIN | VICE CHAIRMAN AND TRUSTEE Trustee or director, Officer | 1 | $0 | $0 | $0 |
| ABBRECHT TODD | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| DEVLIN MICHAEL K | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| MOSES ALAN | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| PETERSON JAMES L | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| POLONSKY MD KENNETH | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| REHNERT GEOFFREY S | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| RUSSELL MARK E | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| SHAHEEN STEFANY | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| WELO KRISTEN | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
| WING LEVERETT | TRUSTEE Trustee or director | 1 | $0 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- CO BILH TAX 529 MAIN ST 4TH FL, CHARLESTOWN, MA 02129-0000
- Principal officer (990 for 2024)
- KEVIN TABB MD, C/O BILH TAX 529 MAIN ST 4TH FL, CHARLESTOWN, MA 02129
- Signed the 990
- SCOTT HERNDON, TREASURER
- Phone
- (781) 744-8924
- Website
- WWW.JOSLIN.ORG
- Return prepared by
- DELOITTE TAX LLP
Mission
SEE SCHEDULE O
Program accomplishments
- SEE SCHEDULE OExpenses $24,775,970 · grants $11,078,365 · revenue $25,359,415
- SEE SCHEDULE OExpenses $45,525,197 · revenue $7,180,328
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 September, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | September 30, 2026 | February 16, 2027 | Not due yet |
| 2024 | September 30, 2025 | February 17, 2026 | 990 on file |
| 2023 | September 30, 2024 | February 18, 2025 | 990 on file |
IRS record
- EIN
- 04-2203836
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Hospital or medical research organization
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1961
- Accounting year ends
- September
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Voluntary health associations and medical disciplines (G800)
- Assets (IRS master file)
- $182,656,365
- Income (IRS master file)
- $78,402,620
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | September 2025 | $77,259,482 | $88,177,463 | $182,656,365 | XML |
| 990-T | September 2025 | – | – | – | IRS |
| 990 | September 2024 | $71,591,609 | $81,626,334 | $176,840,438 | XML |
| 990-T | September 2024 | – | – | – | IRS |
| 990 | September 2023 | $74,197,360 | $82,769,482 | $166,005,908 | XML |
| 990-T | September 2023 | – | – | – | IRS |
| 990 | September 2022 | $134,166,466 | $98,047,633 | $158,601,430 | IRS |
| 990-T | September 2022 | – | – | – | IRS |
| 990 | September 2021 | – | – | – | IRS |
| 990-T | September 2021 | – | – | – | IRS |
| 990 | September 2020 | – | – | – | IRS |
| 990 | September 2019 | – | – | – | IRS |
| 990 | September 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 04-2203836).
Questions about JOSLIN DIABETES CENTER INC
- What is the EIN of JOSLIN DIABETES CENTER INC?
- The employer identification number (EIN) of JOSLIN DIABETES CENTER INC is 04-2203836.
- Is JOSLIN DIABETES CENTER INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1961.
- Are donations to JOSLIN DIABETES CENTER INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does JOSLIN DIABETES CENTER 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 JOSLIN DIABETES CENTER INC due?
- The return for tax year 2025 (the year ending September 30, 2026) is due February 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did JOSLIN DIABETES CENTER INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended September 2025.
- Who is the principal officer of JOSLIN DIABETES CENTER INC?
- The 990 for the year ended September 30, 2025 names KEVIN TABB MD.
- Who are the officers and directors of JOSLIN DIABETES CENTER INC?
- The 990 for the year ended September 30, 2025 lists 32 people; 11 received compensation from the organization.
- How much revenue does JOSLIN DIABETES CENTER INC have?
- On its 990 for the year ended September 30, 2025 it reported revenue of $77,259,482, expenses of $88,177,463 and total assets of $182,656,365 at year end.
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