Compensation 990
OrganizationsEmployeesBoard MembersGrantsContractorsTop RankingsPricing

Stay updated on 990 organization compensation

© 2026 Civic Register LLC

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.

About•Report a discrepancy•Your privacy choices
Employees The Proton Therapy Center LLC Carl Koella

Carl Koella

Officer

President at The Proton Therapy Center LLC

Fiscal year ended December 31, 2018. Published on January 24, 2026.

$0
2018

Total compensation

Carl Koella has been listed as an employee of The Proton Therapy Center LLC in Form 990 filings since fiscal year 2018.

Annual compensation details

$0
President
2018

Compare the compensation of Carl Koella to:

2018

Other employees at The Proton Therapy Center LLC

Benjamin H Robison
Director, Medical Physics
$199,875
$187,730 from orgNo related comp$12,145 other
Michael J Sommi
Secretary
$0
Robert Vincill
Treasurer
$0
Loading rankings…
Loading related profiles…

Revisions to this profile

January 24, 2026:
2018 The Proton Therapy Center LLC 990 published
January 24, 2026:
2017 The Proton Therapy Center LLC 990 published
January 24, 2026:
2016 The Proton Therapy Center LLC 990 published

Get an email update when compensation for Carl Koella is updated

Related Jobs

View more jobs
Powered by Talroo
Report a discrepancy →

Other people named Carl Koella

2018
Employee
Carl Koella
East Tennessee Radiation Therapy Services LLC
$142,410
Board Member
Carl Koella
Great Smoky Mountain Heritage Center
$0
Board Member
Carl Koella III
Great Smoky Mountain Heritage Center
$0
Board Member
Carl Koella III
Pcpt Durham LLC
$0