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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 Mariano Librojo, M.D.

Mariano Librojo, M.D.

Highest compensated employee

Hospitalist at The William W Backus Hospital

Fiscal year ended September 30, 2021. Published on January 25, 2026.

$540,955
2021

Total compensation

Mariano Librojo, M.D. has been listed as an employee of The William W Backus Hospital in Form 990 filings since fiscal year 2019. Total compensation for Mariano Librojo, M.D. has decreased by 4.7% from 2019 to 2021.

Annual compensation details

$540,955
+6%
Hospitalist
2021
$493k org
60 hrs/wk
$49k other
--
$510,178
-10.1%
Hospitalist
2020
$464k org
60 hrs/wk
$47k other
--

Total compensation by year

Compare the compensation of Mariano Librojo, M.D. to:

2021

Other employees at The William W Backus Hospital

Bimal Patel
Former Director and Pres.
$1,263,515
$0 from org$1,118,518 from related$144,997 other
David Whitehead
Former Director and Pres.
$1,227,406
$0 from org$1,147,748 from related$79,658 other
Margaret Marchak
Former Secretary
$968,103
$0 from org$923,811 from related$44,292 other
Donna Handley
Director, Senior Vice President, HHC and Pres.
$861,036
$0 from org$784,677 from related$76,359 other
Zhenxiang Liu, M.D.
Physician
$663,992
$595,581 from orgNo related comp$68,411 other
Robert Sidman, M.D.
Vice President, Medical Affairs
$631,388
$0 from org$559,012 from related$72,376 other
Kyle McClaine, M.D.
Chief Emergency Medicine
$555,546
$486,907 from orgNo related comp$68,639 other
William Horgan, M.D.
Asst. Chief Emergency Svcs
$544,895
$477,200 from orgNo related comp$67,695 other
Mohammed Ahmad Qureshi, M.D.
Physician
$529,183
$467,768 from orgNo related comp$61,415 other
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Revisions to this profile

January 25, 2026:
2021 The William W Backus Hospital 990 published
January 24, 2026:
2020 The William W Backus Hospital 990 published
January 24, 2026:
2019 The William W Backus Hospital 990 published

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$567,583
Hospitalist
2019
$521k org
60 hrs/wk
$48k other
--

Other people named Mariano Librojo, M.D.

2021
Employee
Mariano Librojo
The William W Backus Hospital
$571,417