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Massachusetts Medical Benevolent Society

  • Waltham, MA
  • Tax-exempt since March 1959
  • EIN: 23-7089741

Organization summary

Type of Nonprofit

Designated as a Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Category: Health — General and Rehabilitative / Unknown (E00J) (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$413k (2024)

Expenses
$162k (2024)

Total Assets
$7.95M (2024)

Total Liabilities
$4.35k (2024)

Source: Form 990 tax filings from 2011 to 2024

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending Oct.
2024

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$412,957
Expenses
$161,708
Net Income
$251,249
Net Assets
$7,944,284
Notable Sources of Revenue Percent of Total Revenue
Contributions $162,853
39.4%
Program Services $0
Investment Income $160,653
38.9%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $89,451
21.7%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $7,948,630
Total Liabilities $4,346
Net Assets $7,944,284
Compensation
Key Employees and Officers Compensation Related Other
Ronald W Dunlap Md (Trustee) $0 $0 $0
Marilyn Price Md (Trustee) $0 $0 $0
Dean Nicastro Esq (Trustee) $0 $0 $0
Matt Hitron Md (Trustee) $0 $0 $0
M Donna Younger Md (Trustee) $0 $0 $0
Marcia Franklin Md (Trustee) $0 $0 $0
Charles A Welch Md (Trustee) $0 $0 $0
Mark A Rockoff Md (President) $0 $0 $0
Amy E Vinson Md (Treasurer) $0 $0 $0
Dennis Dimitri Md (Trustee) $0 $0 $0
Donna Norris Md (Vice President) $0 $0 $0
Dania Ali Ahmad Md (Secretary) $0 $0 $0
Lisa I Iezzoni Md (Trustee) $0 $0 $0
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Document Links

990
Filed on Feb. 13, 2025

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
XML

Fiscal Year Ending Oct.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$316,751
Expenses
$180,080
Net Income
$136,671
Net Assets
$6,582,243
Notable Sources of Revenue Percent of Total Revenue
Contributions $132,006
41.7%
Program Services $0
Investment Income $122,600
38.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $62,145
19.6%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $6,589,470
Total Liabilities $7,227
Net Assets $6,582,243
Compensation
Key Employees and Officers Compensation Related Other
Ronald W Dunlap Md (Trustee) $0 $0 $0
Marilyn Price Md (Trustee) $0 $0 $0
Dean Nicastro Esq (Trustee) $0 $0 $0
Matt Hitron Md (Trustee) $0 $0 $0
M Donna Younger Md (Trustee) $0 $0 $0
Marcia Franklin Md (Trustee) $0 $0 $0
Charles A Welch Md (Trustee) $0 $0 $0
Mark A Rockoff Md (President) $0 $0 $0
Amy E Vinson Md (Treasurer) $0 $0 $0
Dennis Dimitri Md (Trustee) $0 $0 $0
Donna Norris Md (Vice President) $0 $0 $0
Dania Ali Ahmad Md (Secretary) $0 $0 $0
Lisa I Iezzoni Md (Trustee) $0 $0 $0
+ View more people

Document Links

990
Filed on Feb. 16, 2024

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Oct.
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$339,855
Expenses
$191,853
Net Income
$148,002
Net Assets
$6,335,151
Notable Sources of Revenue Percent of Total Revenue
Contributions $206,104
60.6%
Program Services $0
Investment Income $138,458
40.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$4,707
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $6,351,421
Total Liabilities $16,270
Net Assets $6,335,151
Compensation
Key Employees and Officers Compensation Related Other
Ronald W Dunlap Md (Trustee) $0 $0 $0
George Santos Md (Trustee) $0 $0 $0
Dean Nicastro Esq (Trustee) $0 $0 $0
Matt Hitron Md (Trustee) $0 $0 $0
M Donna Younger Md (Trustee) $0 $0 $0
John M Crowe Md (Trustee) $0 $0 $0
Charles A Welch Md (Trustee) $0 $0 $0
Mark A Rockoff Md (President) $0 $0 $0
Amy E Vinson Md (Treasurer) $0 $0 $0
Karl T Benedict Jr Md (Trustee) $0 $0 $0
Donna Norris Md (Vice President) $0 $0 $0
Dania Al Ahmad Md (Secretary) $0 $0 $0
Lisa I Iezzoni Md (Trustee) $0 $0 $0
+ View more people

Document Links

990
Filed on Feb. 21, 2023

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Oct.
2021

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$414,538
Expenses
$117,881
Net Income
$296,657
Net Assets
$7,466,362
Notable Sources of Revenue Percent of Total Revenue
Contributions $218,632
52.7%
Program Services $0
Investment Income $80,342
19.4%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $115,564
27.9%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $7,483,754
Total Liabilities $17,392
Net Assets $7,466,362
Compensation
Key Employees and Officers Compensation Related Other
Ronald W Dunlap Md (Trustee) $0 $0 $0
George Santos Md (Trustee) $0 $0 $0
Dean Nicastro Esq (Trustee) $0 $0 $0
Bernard Levy Md (Trustee) $0 $0 $0
M Donna Younger Md (Trustee) $0 $0 $0
John M Crowe Md (Trustee) $0 $0 $0
Charles A Welch Md (Trustee) $0 $0 $0
Mark A Rockoff Md (President) $0 $0 $0
Amy E Vinson Md (Treasurer) $0 $0 $0
Karl T Benedict Jr Md (Trustee) $0 $0 $0
Donna Norris Md (Vice President) $0 $0 $0
Dania Al Ahmad Md (Secretary) $0 $0 $0
Lisa I Iezzoni Md (Trustee) $0 $0 $0
+ View more people

Document Links

990
Filed on Aug. 1, 2023

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Oct.
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$194,444
Expenses
$204,339
Net Income
-$9,895
Net Assets
$6,087,651
Notable Sources of Revenue Percent of Total Revenue
Contributions $179,028
92.1%
Program Services $0
Investment Income $98,838
50.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$83,422
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $6,113,423
Total Liabilities $25,772
Net Assets $6,087,651
Compensation
Key Employees and Officers Compensation Related Other
Ronald W Dunlap Md (Trustee) $0 $0 $0
Barbara A Rockett Md (Trustee) $0 $0 $0
George Santos Md (Trustee) $0 $0 $0
Dean Nicastro Esq (Trustee) $0 $0 $0
Bernard Levy Md (Trustee) $0 $0 $0
M Donna Younger Md (Trustee) $0 $0 $0
John M Crowe Md (Vice President) $0 $0 $0
Charles A Welch Md (Trustee) $0 $0 $0
Mark A Rockoff Md (President) $0 $0 $0
Amy E Vinson Md (Assistant Treasurer) $0 $0 $0
Karl T Benedict Jr Md (Treasurer) $0 $0 $0
Donna Norris Md (Trustee) $0 $0 $0
Dania Al Ahmad Md (Secretary) $0 $0 $0
+ View more people

Document Links

990
Filed on March 3, 2021

Primary tax return for a nonprofit’s activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Oct.
2019

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$696,252
Expenses
$232,087
Net Income
$464,165
Net Assets
$5,968,777
Notable Sources of Revenue Percent of Total Revenue
Contributions $211,334
30.4%
Program Services $0
Investment Income $177,341
25.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $307,577
44.2%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $5,981,127
Total Liabilities $12,350
Net Assets $5,968,777

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2018

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$577,814
Expenses
$221,876
Net Income
$355,938
Net Assets
$5,570,461
Notable Sources of Revenue Percent of Total Revenue
Contributions $219,158
37.9%
Program Services $0
Investment Income $160,010
27.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $198,646
34.4%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $5,581,511
Total Liabilities $11,050
Net Assets $5,570,461

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2017

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$351,598
Expenses
$208,692
Net Income
$142,906
Net Assets
$5,665,511
Notable Sources of Revenue Percent of Total Revenue
Contributions $208,393
59.3%
Program Services $72,016
20.5%
Investment Income $0
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $71,189
20.2%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $5,693,706
Total Liabilities $28,195
Net Assets $5,665,511

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2016

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$304,702
Expenses
$169,762
Net Income
$134,940
Net Assets
$5,010,475
Notable Sources of Revenue Percent of Total Revenue
Contributions $261,584
85.8%
Program Services $0
Investment Income $65,378
21.5%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$22,260
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $5,016,475
Total Liabilities $6,000
Net Assets $5,010,475

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$383,544
Expenses
$177,361
Net Income
$206,183
Net Assets
$4,852,971
Notable Sources of Revenue Percent of Total Revenue
Contributions $227,623
59.3%
Program Services $0
Investment Income $114,556
29.9%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $41,365
10.8%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $4,855,160
Total Liabilities $2,189
Net Assets $4,852,971

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2014

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$350,799
Expenses
$155,980
Net Income
$194,819
Net Assets
$4,889,361
Notable Sources of Revenue Percent of Total Revenue
Contributions $223,964
63.8%
Program Services $0
Investment Income $88,921
25.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $37,914
10.8%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $4,898,401
Total Liabilities $9,040
Net Assets $4,889,361

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2013

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$317,341
Expenses
$146,287
Net Income
$171,054
Net Assets
$4,630,937
Notable Sources of Revenue Percent of Total Revenue
Contributions $188,368
59.4%
Program Services $0
Investment Income $78,798
24.8%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $50,175
15.8%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $4,639,987
Total Liabilities $9,050
Net Assets $4,630,937

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2012

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$206,674
Expenses
$131,430
Net Income
$75,244
Net Assets
$4,045,278
Notable Sources of Revenue Percent of Total Revenue
Contributions $162,180
78.5%
Program Services $0
Investment Income $69,582
33.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$25,088
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $4,055,803
Total Liabilities $10,525
Net Assets $4,045,278

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2011

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$130,243
Expenses
$149,725
Net Income
-$19,482
Net Assets
$3,783,025
Notable Sources of Revenue Percent of Total Revenue
Contributions $105,313
80.9%
Program Services $0
Investment Income $62,151
47.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$37,221
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $3,793,275
Total Liabilities $10,250
Net Assets $3,783,025

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2010

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2009

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2008

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2007

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2006

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2005

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2003

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2002

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Oct.
2001

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica. Bulk PDF downloads since 2017 are available from the IRS.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

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About Nonprofit Explorer

Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

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