Skip to content
Governance Register
US nonprofit · EIN 330644620 · Santa Ana, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 330644620) - 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 time served.Latest return IRS Form 990 series e-file data - 990PF for the year to 31 March 2025: assets, liabilities, staff, website, telephone, pay.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.2026 return IRS e-file (TEOS) 2026 release: 990PF for the year to 31 March 2025.Deductibility IRS Publication 78 data (code PF), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Healthcare Foundation for Orange County's network

3 peoplei3 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (3). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.

The board

3 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.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record.
NameRole as filedSinceOn the board
Michael Ruane ChairChairman2019
7 yrs
Brian R Van Marter ESQCompany secretary2022
4 yrs
Mark A RefowitzVice Chair2019
7 yrs
Under 5 years5 to 6 years6 years or more

Officers and senior leadership

1 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
J Fernando NieblaCFOsince 2019

Pay and hours

year to 31 March 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
Michael RuaneChairman5$0
Mark A RefowitzVice Chair5$0
J Fernando NieblaCFO5$0
Brian R van Marter EsqSecretary5$0
Anthony MagnoMember5$0
Lilia M TanakeyowmaMember5$0
Mark Horton MDMember5$0
Debra MathiasMember5$0
Quynh Kieu MDMember5$0

No pay was reported for anyone in Part VII on this return.

About

Legal name
Healthcare Foundation for Orange County
EIN
330644620
Address
1505 E 17th St Ste 113, Santa Ana, CA, 92705-8520
State
California
Activity (NTEE)
E20J Health care
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Health Care
Size band
8 (IRS master file code)
IRS ruling date
1 July 1995
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2025
IRS Publication 78
PF (contributions deductible)

Most connected

Longest observed on the filings

≥7years on the filingsMichael Ruane
≥7years on the filingsMark A Refowitz
≥4years on the filingsBrian R Van Marter ESQ

Latest return

year to 31 March 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 March 2025. US dollars, as filed.
Total assets
$21m
Net assets or fund balances
$21m