Medical Staff of Doctors Medical Center co Chief of Staff
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.
Medical Staff of Doctors Medical Center co Chief of Staff at a glance
- Total assets
- $676,611
- +17.5% vs 2024
- Revenue (2025)
- $245,881
- -4.7% vs 2024
- Net investment income (2025)
- $131
- +17.0% vs 2024
- Expenses (2025)
- $145,246
- -27.9% vs 2024
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated October 2026.
Who Medical Staff of Doctors Medical Center co Chief of Staff funds
How this funder distributes its grants
Grant Size Distribution
1 grant across all recorded years
The most common grant size was under $50K: 1 grant of 1 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2022, annual grant giving ranged from $5K (2022) to $25K (2021). In 2022 it reported $5K in grants paid, as a total without an itemized list.
Hatched bars: grants paid as reported on the IRS filing, which lists no individual grants for that year.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| California Medical Associatio Sacramento, CA | — | $25,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $676,611 | $245,881 | $145,246 | — | — | $131 |
| 2024 | $575,976 | $257,962 | $201,499 | — | — | $112 |
| 2023 | $519,513 | $247,482 | $79,224 | — | — | $82 |
| 2022 | $351,255 | $170,543 | $153,173 | $5,000 | Total only | $81 |
| 2021 | $333,885 | $136,871 | $183,715 | $25,000 | 1 | $71 |
| 2020 | $380,729 | $141,328 | $141,348 | — | — | $78 |
| 2019 | $380,749 | $154,422 | $138,968 | — | — | $72 |
"Total only": grants paid as reported on the IRS filing, which lists no individual grants for that year.
About Medical Staff of Doctors Medical Center co Chief of Staff
Based on IRS filings
Medical Staff of Doctors Medical Center co Chief of Staff is a public charity focused on Community Improvement & Capacity Building, based in Modesto, CA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $677K in total assets. Net investment income was $131.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
Medical Staff of Doctors Medical Center co Chief of Staff is led by Antoun Manganas MD, Chairman on every filing since 2019; 16 of 35 officers listed in 2025 are compensated.
Officers on the 2025 filing
Antoun Manganas MD
Chairman
On filings since 2019
2 hrs/week
$800 (2019) → $0 (2025)
Michael Klieger MD
Chairman
On filings since 2019
2 hrs/week
$2K (2021) → $2K (2025)
Millard Johnson MD
Chairman
On filings since 2019
2 hrs/week
$3K (2020) → $0 (2025)
Natalie Slowik
Chairman
On filings since 2019
2 hrs/week
$800 (2019) → $4K (2025)
Robert Barandica MD
Chairman
On filings since 2019
2 hrs/week
$2K (2019) → $3K (2025)
John Pfeffer MD
Committee Chair
On filings since 2020
2 hrs/week
$10K (2020) → $0 (2025)
Evelyn Edelmuth MD
Chairman
On filings since 2023
2 hrs/week
$5K (2023) → $0 (2025)
Anika Godhwani DO
Chairman
On filings since 2024
2 hrs/week
$4K (2025)
Benham Seyed Jazayeri Moghadas
Chairman
On filings since 2024
2 hrs/week
$1K (2025)
Casey Richardson MD
Chairman
On filings since 2024
2 hrs/week
$800 (2025)
Gima Quaid MD
Chairman
On filings since 2024
2 hrs/week
$7K (2024) → $0 (2025)
Ian Medus MD
Chairman
On filings since 2024
2 hrs/week
$3K (2025)
Kevin Rine MD
Chairman
New on the 2025 filing
2 hrs/week
$1K (2025)
Mohammed Abo Khamis MD
Chairman
New on the 2025 filing
2 hrs/week
$1K (2025)
Waleed Ibrahim MD
Chairman
New on the 2025 filing
2 hrs/week
$2K (2025)
Curtis Strong MD
Chairman
On filings since 2024
2 hrs/week
No compensation reported
David Chang MD
Chairman
On filings since 2024
2 hrs/week
No compensation reported
Jesua Law DO
Chairman
On filings since 2024
2 hrs/week
No compensation reported
Richard Haak MD
Chairman
On filings since 2024
No compensation reported
Satnam Ludder MD
Chairman
On filings since 2024
2 hrs/week
No compensation reported
William Greene MD
Chairman
On filings since 2024
2 hrs/week
No compensation reported
William Pistel DO
Chairman
On filings since 2024
2 hrs/week
No compensation reported
Alan Garvin MD
Chief
On filings since 2019
2 hrs/week
$3K (2020) → $1K (2025)
Erik Lacy MD
Imm. Past Chief
On filings since 2019
2 hrs/week
$48K (2019) → $2K (2025)
Gregory Helbig MD
Chief Elect
On filings since 2019
2 hrs/week
$2K (2019) → $0 (2025)
Mark Fahlen MD
Chief
Chief of Staff → Chief, 2021
On filings since 2019
2 hrs/week
$4K (2019) → $0 (2025)
Michael Ringer MD
Chief
On filings since 2019
2 hrs/week
$600 (2019) → $0 (2025)
Rohini Bogineni MD
Chief of Staff
Secretary & Chairman → Secretary, 2020
Secretary → Chief of Staff, 2021
On filings since 2019
40 hrs/week
$1K (2019) → $4K (2025)
Kristopher Richter
Chief of Staff
On filings since 2024
$6K (2024) → $52K (2025)
Matthew Tilstra MD
Secretary
New on the 2025 filing
2 hrs/week
$2K (2025)
Tanya Dam MD
Vice Chairman
New on the 2025 filing
2 hrs/week
$1K (2025)
Brian Hutto DMD
Section Chief
On filings since 2019
2 hrs/week
No compensation reported
Charles Suntra MD
Section Chief
On filings since 2019
2 hrs/week
No compensation reported
Rangram Chandran MD
Section Chief
On filings since 2019
2 hrs/week
No compensation reported
Uzay Yasar MD
Section Chief
On filings since 2019
2 hrs/week
No compensation reported
Former officers (8)
- Former: Benjamin Remington MD (2019–2023) — Chief
- Former: James Hoyt MD (2019–2023) — Section Chief
- Former: John Casey MD (2019–2023) — Chairman
- Former: Jonathan Chow MD (2019–2023) — Chairman
- Former: Michael Sasevich MD (2019–2023) — Chief
- Former: Sean Clare MD (2019–2023) — Chairman
- Former: Won Kim MD (2019–2023) — Interim Chief
- Former: Ian Fauconier MD (2019) — Section Chief
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $52K, to Kristopher Richter (Chief of Staff). 16 officers or directors reported compensation on that filing.
Frequently asked questions about Medical Staff of Doctors Medical Center co Chief of Staff
How large is Medical Staff of Doctors Medical Center co Chief of Staff?
Medical Staff of Doctors Medical Center co Chief of Staff reported $677K in total assets on its 2025 IRS Form 990. Its revenue that year was $246K.
What is Medical Staff of Doctors Medical Center co Chief of Staff?
Medical Staff of Doctors Medical Center co Chief of Staff is a public charity focused on Community Improvement & Capacity Building, based in Modesto, CA. It holds $677K in total assets as of 2025.
Where does Medical Staff of Doctors Medical Center co Chief of Staff operate?
Medical Staff of Doctors Medical Center co Chief of Staff has awarded grants in California.
What is Medical Staff of Doctors Medical Center co Chief of Staff's EIN?
Medical Staff of Doctors Medical Center co Chief of Staff's EIN (Employer Identification Number) is 61-1545646. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated October 2026. Sourced from IRS Form 990 filings.
Data update history
(4)
When this profile's IRS filing data changed on Grantable
- Added Form 990 for fiscal year 2019 (received by the IRS February 29, 2020)
- Updated Form 990 for fiscal year 2022 (received by the IRS August 28, 2023)
- Added Form 990 for fiscal year 2025 (received by the IRS May 15, 2026)
- IRS filings on file for fiscal years 2020–2024
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