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Governance Register
US nonprofit · EIN 237399545 · Plymouth, MAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 237399545) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 30 June 2025: assets, liabilities, staff, website, telephone, pay.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue (us-approach-v4-clean). Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

ARC of Greater Plymouth Inc's network

8 people4 organisationsi8 people and 4 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (8). Violet dotted lines (4) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

8 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations in the tables. The network map shows same-name matches as likely links only, never as confirmed.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 8 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Patricia Cosgrove ChairDirector/Co-Chairperson2018
8 yrs
Steve Costello ChairDirector/Chairman2018
8 yrs
Adam HillDirector2018
8 yrs
Joseph GomesDirector2019
7 yrs
Michael DriscollDirector/Treasurer2025
1 yr
Robert MascaliDirector2023
3 yrs
Robert NoletDirector2023
3 yrs
Steven BarneyDirector/Secretary2018
8 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

6 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Anne BaldwinVP of Quality Assurance & Advocacy2024
Carolyn McCarthyVP of Business Operations2025
Mary ValachovicPresident and CEOsince 2018
Michelle SobelVP of Healthcare Servicessince 2024
Richard JohnsonSr. VP of Business Operationssince 2020
Susan O'SheaDir. of Quality Assurance and Clinical2020

Pay and hours

year to 30 June 2025iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Mary ValachovicPresident and CEO40$264k$20k
Carolyn McCarthyVP of Business Operations40$126k$24k
Michelle SobelVP of Healthcare Services40$125k$10k
Michael DriscollDirector/Treasurer40$0
Steve CostelloDirector/Chairman1$0
Patricia CosgroveDirector/Co-Chairperson1$0
Steven BarneyDirector/Secretary1$0
Adam HillDirector1$0
Joseph GomesDirector1$0
Robert MascaliDirector1$0
Robert NoletDirector1$0

About

Legal name
Arc of Greater Plymouth Inc
EIN
237399545
Address
71 Armstrong Rd, Plymouth, MA, 02360-4837
State
Massachusetts
Mission
Provide services to developmentally disabled individuals and their families through family support programs and supported living. (as filed on the Form 990)
Activity (NTEE)
P82Z Human services
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Human Services
Size band
8 (IRS master file code)
Formed
1974
Principal officer
Kimberly Scharf (as named on the Form 990)
IRS ruling date
1 October 1974
Status
Code 01 (unconditional exemption)
Form 990 filings on record
8, latest 2025
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥8years on the filingsPatricia Cosgrove
≥8years on the filingsSteve Costello
≥8years on the filingsAdam Hill
≥8years on the filingsSteven Barney

Latest return

year to 30 June 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 June 2025. US dollars, as filed.
Total assets
$17.6m
Total liabilities
$14m
Net assets or fund balances
$3.6m
Contributions and grants received
$12m
Program service revenue
$0
Employees
174
Volunteers
8

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2023$9.7m$9.9mDeficit $149k

As filed on the IRS Form 990. US dollars.