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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Employees The William W Backus Hospital Sergio Casillas, M.D.

Sergio Casillas, M.D.

Highest compensated employee

Physician at The William W Backus Hospital

Fiscal year ended September 30, 2017. Published on January 24, 2026.

$660,708

2017

Total compensation

Sergio Casillas, M.D. has been listed as an employee of The William W Backus Hospital in Form 990 filings since fiscal year 2017.

Annual compensation details

$660,708

Physician

2017

$623k

60 hrs/wk

$39k

--

Total compensation by year

Compare the compensation of Sergio Casillas, M.D. to:

Revisions to this profile

January 24, 2026:

2017 The William W Backus Hospital 990 published

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2017

Other employees at The William W Backus Hospital

David Whitehead

Former Director/President/Evp

$941,983

$0 $885,620 $56,363

Margaret Marchak

Chief Legal Officer

$807,510

$0 $676,177 $131,333

Bimal Patel

President and Director

$751,667

$0 $648,139 $103,528

Daniel Lohr

Senior Vp/Cfo (Thru DEC 2016)

$711,088

$0 $582,635 $128,453

Robert Sidman, M.D.

Vice President Medical Affairs EAST Region

$566,846

$0 $514,163 $52,683

Zhenxiang Liu, M.D.

Physician

$545,044

$507,401 No related comp$37,643

Nader Bahadory, M.D.

Physician

$478,871

$448,338 No related comp$30,533

William Horgan, M.D.

Physician

$414,426

$376,661 No related comp$37,765

Richard Goulding, M.D.

Physician

$398,197

$360,432 No related comp$37,765