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Governance Register
US nonprofit · EIN 521340920 · Woodbridge, VAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 521340920) - 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.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 PF), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Potomac Health Foundation's network

13 people6 organisationsi13 people and 6 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (13). Violet dotted lines (6) 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

13 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.
NameRole as filedSinceOn the board
Marion M Wall ChairChair2018
8 yrs
Carlos CastroDirector2018
8 yrs
Carol S Shapiro MD MBAVice-Chair2021
5 yrs
Clarice Torian MEDDirector2023
3 yrs
Gayle WhitlockTreasurer2023
3 yrs
Paul GadenDirector2021
5 yrs
Phyllis Morgan PHDDirector2022
4 yrs
R Michael SorensenDirector2018
8 yrs
Sam Hill EDDDirector2018
8 yrs
Sarah Pitkin PHDDirector2018
8 yrs
Wayne MallardCompany secretary2018
8 yrs
Wiliam C Reha MD MBADirector2023
3 yrs
William M MossDirector2018
8 yrs
Under 5 years5 to 6 years6 years or moreShow all 13 →

Officers and senior leadership

3 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Erin Thomas-MatthewsExecutive Directorsince 2023
Steven LigaExecutive Director to Jul 2023since 2022
Susie LeeExecutive Director to Jul 2022since 2018

About

Legal name
Potomac Health Foundation
EIN
521340920
Address
2296 Opitz Blvd Ste 200, Woodbridge, VA, 22191-3352
State
Virginia
Activity (NTEE)
E110 Health care
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Health Care
Size band
9 (IRS master file code)
IRS ruling date
1 April 1984
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2024
IRS Publication 78
PF (contributions deductible)

Most connected

Longest observed on the filings

≥8years on the filingsMarion M Wall
≥8years on the filingsCarlos Castro
≥8years on the filingsR Michael Sorensen
≥8years on the filingsSam Hill EDD

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$0$10.1mDeficit $10.1m

As filed on the IRS Form 990. US dollars.