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Governance Register
US nonprofit · EIN 844886146 · Upland, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 844886146) - 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 - 990 for the year to 31 December 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. Not a statement that the organisation is recruiting.Licence US Federal Government public domain.How we handle data

Medical Staff of SAN Antonio Regional Hospital's network

15 people1 organisationi15 people and 1 organisation on this map.The large node is the subject of this page. Solid lines are what the register itself records (15). Violet dotted lines (3) 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

15 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.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. The organisation reported 15 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Antoune Saad MD ChairChair2023
3 yrs
Ed Digiamarino MD Chair (also filed as Ed Digiamarino)Chair2023
3 yrs
Franklin Johnson DO ChairChair2023
3 yrs
Lawrence Wagman MD ChairChair2024
2 yrs
Reza Pakdaman MD ChairChair2024
2 yrs
Steven Barag DO ChairChair2022
4 yrs
Timothy Wu MD ChairChair2024
2 yrs
Tyler Mitchell DO ChairChair2024
2 yrs
Ali Heidari DOPast-President2022
4 yrs
Basim Abdelkarim MDPresident2023
3 yrs
Hussein Abidali DOMember2023
3 yrs
Mark Shiu DO (also filed as Mark Shiu)Sec/Treasurer2020
6 yrs
Nima Naimi DOPresident-Elect2024
2 yrs
Peter Yoo MDMember2023
3 yrs
Vincent Lee MDMember2024
2 yrs
Under 5 years5 to 6 years6 years or moreShow all 15 →

Pay and hours

year to 31 December 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
Nima Naimi DOPresident-Elect0$0
Vincent Lee MDMember0$0
Steven Barag DOChair0$0
Mark Shiu DOSec/Treasurer0$0
Tyler Mitchell DOChair0$0
Ali Heidari DOPast-President0$0
Basim Abdelkarim MDPresident0$0
Hussein Abidali DOMember0$0
Peter Yoo MDMember0$0
Ed DiGiamarino MDChair0$0
Franklin Johnson DOChair0$0
Antoune Saad MDChair0$0
Timothy Wu MDChair0$0
Reza Pakdaman MDChair0$0
Lawrence Wagman MDChair0$0

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

About

Legal name
Medical Staff of San Antonio Regional Hospital
EIN
844886146
Address
999 San Bernardino Rd, Upland, CA, 91786-4920
State
California
Mission
Membership of hospital association employees established to provide opportunities to its members. (as filed on the Form 990)
Activity (NTEE)
Y30 Mutual and membership benefit
IRS classification
501(c)06 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Mutual & Membership Benefit
Size band
4 (IRS master file code)
Formed
2020
IRS ruling date
1 July 2020
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2025

Most connected

Longest observed on the filings

≥6years on the filingsMark Shiu DO
≥4years on the filingsSteven Barag DO
≥4years on the filingsAli Heidari DO
≥3years on the filingsAntoune Saad MD

Latest return

year to 31 December 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2025. US dollars, as filed.
Total assets
$236k
Total liabilities
$1
Net assets or fund balances
$236k
Contributions and grants received
$0
Program service revenue
$282k
Employees
0

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$257k$250k$8k

As filed on the IRS Form 990. US dollars.