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Governance Register
US nonprofit · EIN 611545646 · Modesto, CAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 611545646) - 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.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 Doctors Medical Center's network

24 people2 organisationsi24 people and 2 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (24). Violet dotted lines (2) 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

24 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 24 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Antoun Manganas MD ChairChairman2018
8 yrs
Evelyn Edelmuth MD ChairChairman2023
3 yrs
John Casey MD ChairChairman2018
8 yrs
John Pfeffer MD ChairCommittee Chair2018
8 yrs
Jonathan Chow MD Chair (also filed as Jonathan Chow md)Chairman2018
8 yrs
Michael Klieger MD ChairChairman2019
7 yrs
Millard Johnson MD Chair (also filed as Millard Johnson md)Chairman2018
8 yrs
Natalie Slowik MD Chair (also filed as Natalie Slowik)Chairman2018
8 yrs
Robert Barandica MD ChairChairman2018
8 yrs
Sean Clare MD ChairChairman2018
8 yrs
Alan Garvin MDChief2018
8 yrs
Benjamin Remington MDChief2018
8 yrs
Brian Hutto DMD (also filed as Brian Hutto dmd)Section Chief2018
8 yrs
Charles Suntra MDSection Chief2019
7 yrs
Erik Lacy MDImm. Past Chief2018
8 yrs
Gregory Helbig MDChief Elect2019
7 yrs
James Hoyt MDSection Chief2019
7 yrs
Mark Fahlen MDChief2018
8 yrs
Michael Ringer MDChief2018
8 yrs
Michael Sasevich MDChief2019
7 yrs
Rangram Chandran MDSection Chief2018
8 yrs
Rohini Bogineni MDChief of Staff2018
8 yrs
Uzay Yasar MDSection Chief2019
7 yrs
Won Kim MDInterim Chief2019
7 yrs
Under 5 years5 to 6 years6 years or moreShow all 24 →

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
Kristopher RichterChief of Staff0$52k
Anika Godhwani DOChairman2$4k
Rohini Bogineni MDChief of Staff40$4k
Natalie SlowikChairman2$4k
Robert Barandica MDChairman2$3k
Ian Medus MDChairman2$3k
Erik Lacy MDImm. Past Chief2$2k
Michael Klieger MDChairman2$2k
Matthew Tilstra MDSecretary2$2k
Waleed Ibrahim MDChairman2$2k
Kevin Rine MDChairman2$1k
Benham Seyed Jazayeri MoghadasChairman2$1k
Mohammed Abo Khamis MDChairman2$1k
Tanya Dam MDVice-Chairman2$1k
Alan Garvin MDChief2$1k
Casey Richardson MDChairman2$800
Mark Fahlen MDChief2$0
Gregory Helbig MDChief Elect2$0
Antoun Manganas MDChairman2$0
Michael Ringer MDChief2$0
David Chang MDChairman2$0
William Greene MDChairman2$0
Millard Johnson MDChairman2$0
Evelyn Edelmuth MDChairman2$0
Richard Haak MDChairman0$0
Brian Hutto DMDSection Chief2$0
Rangram Chandran MDSection Chief2$0
Charles Suntra MDSection Chief2$0
Uzay Yasar MDSection Chief2$0
Satnam Ludder MDChairman2$0
John Pfeffer MDCommittee Chair2$0
William Pistel DOChairman2$0
Jesua Law DOChairman2$0
Curtis Strong MDChairman2$0
Gima Quaid MDChairman2$0

About

Legal name
Medical Staff of Doctors Medical Center
EIN
611545646
Address
1441 Florida Ave, Modesto, CA, 95350-4405
State
California
Mission
To oversee the quality of patient care provided by members, represent the interest of members before the hospital administration and general public, and provide educational programs to members and other interested parties. (as filed on the Form 990)
Activity (NTEE)
S41 Community improvement and capacity building
IRS classification
501(c)06 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Community Improvement & Capacity Building
Size band
5 (IRS master file code)
Formed
2008
IRS ruling date
1 June 2009
Status
Code 01 (unconditional exemption)
Form 990 filings on record
5, latest 2023

Most connected

Longest observed on the filings

≥8years on the filingsAntoun Manganas MD
≥8years on the filingsJohn Casey MD
≥8years on the filingsJohn Pfeffer MD
≥8years on the filingsJonathan Chow 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
$677k
Total liabilities
$0
Net assets or fund balances
$677k
Contributions and grants received
$246k
Program service revenue
$0
Employees
0