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Tyler F. Adams
312.670.7444

Michelle Ambriz
312.670.7444

Kara Austin
312.670.7444

James Beer
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Nico A. Berrini
Director of Growth
312.670.7444

Laurel Boeman
312.670.7444

Andy Bonnot
312.670.7444

Alex Bruscino
312.670.7444

Alison Buchelt
312.670.7444

Kelly H. Buchheit
Director of Audit & Assurance Quality Control
312.670.7444

Sandy Burhans
312.286.4968

Charles J. Burke
312.670.7444

Jennifer Cadet
312.670.7444

Connie Calderon
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Maureen A. Callahan
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Carolina Cambraia

Angel Campuzano
630.703.7444

Joyce Carlson

Jeffrey L. Chiles
312.670.7444

Eileen B. Cozzi
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Phillip Deel
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Seamus M. Donoghue
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Jeremy Elliott
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Rachel Farrell
630.703.7444

Alison H. Fetzer
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Jason Flahive
Director
312.670.6281

Harry Fox
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Darin Fullmer
Director
801.472.7444

Aaliyah G. Gardner
312.670.7444

Brad Garrett
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Christopher I. Georgiou
Director
312.670.7444

Caitlin G. Gibbs
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Kelli Gibson
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Jason Gierhahn
630.703.7444

Tanya Gierut
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Danielle M. Gilbert
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Joshua D. Goldschmidt
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Jeffrey R. Green
630.703.7444

Amanda Gutierrez
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Michelle L. Haines
Director
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Derek Hammen
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Drake A. Hlavin
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Robert Huesing
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Brian R. Israel
Director
312.670.6225

Jacqueline N. Janczewski
Director
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Kathy Z. Jeziorski
630.703.7444

Jurgita Kalina
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Ryan A. Kertes
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K. Paige Kirkland
312.670.7444

James M. Knowles
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Greg Koelling
Director
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Thomas M. Kosinski
Director
630.703.6247

Katarina "Kat" Kraljevic
312.670.7444

Yoomi Lee
312.670.7444

Michelle Lehmann
Director and Head of Audit and Assurance
630.703.7444

Vedha Lekshminarayanan
630.703.7444

Adam M. Levine
Director
312.670.7444

Michael A. Loesevitz
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David Luchok
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Claire M. Maude
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Heidi Mecham
801.472.7444

Barbara A. Miller
630.703.7444

Manuel "Manny" Miranda
312.670.7444

Shawna M. Mitchell
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Cindy Montalvo
630.703.7444

Galina Morgovsky
312.670.7444

Daniel Mroz
312.670.7444

Dan Newman
Director
312.670.7444

Tommy Nguyen
312.670.7444

Cory B. Nielson
Director
801.472.7444

Colin D. O'Neill
312.670.7444

Joseph A. Odzer
CEO and Managing Director
630.703.7444

Bianca Ojeda
312.670.7444

Alexandra Olson
312.670.7444

Kevin P. Omahen
Director
630.703.7444

Azuwa Omietimi
312.670.7444

Lilli Panter
801.472.7444

Tamara Partridge
Director
312.670.7444

Adam J. Pechin
Director
630.703.7444

James Pellino
Director
630.703.7444

Luca Rajola Pescarini
312.670.7444

Thomas E. Pierce
Director
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Pamela Powers

James G. Quaid
Director
630.703.7444

Renae Rahe
312.670.7444

Laura Rangel
312.670.7444

Valerie Rausch
312.670.7444

Markus Richter
630.703.7444

Brian Robertson
312.670.7444

Kathleen Ruhlin
312.670.7444

Tony Salazar
312.670.7444

Kelsey Shleyner
630.703.7444

Heather Sinclair-Smelley
312.670.7444

Loveleen Singh
312.670.7444

Maria P. Siourounis
312.670.7444

Noah Spiro
312.670.7444

Kaleb Spreitzer
312.670.7444

Taylor J. Sterling
312.670.7444

Kadir P. Sunardio
630.703.7444

Robert G. Swenson
Director
312.670.7444

Justin L. Sylvan
312.670.7444

Ilissa W. Sylvan
Director
312.670.7444

Amber Taylor
312.670.7444

Matthew E. Temple
312.670.7444

Kenneth L. Tornheim
Director
312.670.7444

Eliza Tumbas
312.670.7444

Brandon W. Vahl
Director
312.670.7444

Joshua F. Vlad
312.670.7444

Peggy Vyborny
Director
312.670.7444

Frank L. Washelesky
Director
312.670.6235

Sarah G. Widlock
630.703.7444

Madalyn Wilson
312.670.7444

Danielle M. Winkle
Director
312.670.6204

Wing Wong
312.670.7444

Bee Yang
Director
312.670.7444

Wendan Zhang
312.670.7444

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Newsletters

Summer 2025

Tax Connections Newsletter – Summer 2025

Spring 2025

Wealth Management Group Newsletter – Spring 2025

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Manufacturing and Distribution Group Newsletter – Spring 2025

Spring 2025

Real Estate Group Newsletter – Spring 2025

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Firm News

08.11.25

ORBA Ranked as a 2025 Top 200 Firm by INSIDE Public Accounting
CHICAGO — ORBA, one of Chicago’s largest public accounting firms, has once again been recognized as a 2025 IPA Top 200 Firm by INSIDE Public Accounting (IPA). This marks the eleventh time since 2013 that ORBA has made the list of the country’s top firms. In the IPA’s annual report, ORBA is ranked #113, climbing five spots higher than last year, and is the highest ranked of the six Illinois firms on the Top 200 list.

06.30.25

ORBA Welcomes New Hires to the Firm

06.03.25

Cory Nielson, CPA, Joins ORBA Salt Lake City Office as an Audit and Assurance Group Director

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client alerts

10.01.25

IRS Releases Guidance on Changes to R&E Expensing

08.25.25

How Will the Changes to the SALT Deduction Affect Your Tax Planning?

08.07.25

The OBBBA Will Soon Modify or Eliminate Certain Clean Energy Tax Incentives

08.06.25

What Taxpayers Need to Know About the IRS Ending Paper Checks

07.31.25

The OBBBA Shifts the Landscape for Employers

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seminars & events

Guides

ORBA will gladly provide you with hard copies of the useful guides listed below. Select which guides you would like to receive and submit the form below.

Tax Pocket Guide

This handy reference tool includes current income tax brackets, estate and gift tax rates, standard mileage rates, and more.
Tax Planning Guide

This booklet provides detailed explanations to help individual taxpayers, investors, business owners and professionals with tax planning throughout the year.
Records Retention Schedule

This guide informs of how long to hold on to important business and healthcare documents.
Auto, Travel & Business Log

This booklet allows individuals to keep track of all business expenses in one central place.

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