Oak Brook · DuPage County · checked Oct 21, 2026
CPAs in Oak Brook, Illinois
66 current IDFPR licenses with an address of record in Oak Brook: 50 licensed CPAs and 16 CPA firms, plus 22 registered CPAs (registered, not licensed) listed separately. Featured (labeled) and claimed listings first, then A–Z.
- Licensed CPAs
- 50
- CPA firms
- 16
- Registered, not licensed
- 22
- Checked
- Oct 21, 2026
CPA firms in Oak Brook
16 listings
CPA firm · Oak BrookGorden & Co PCLic. #066004971Since 2018Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookGray Hunter Stenn LLPLic. #066003689Since 1998Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookHegre McMahon & Schimmel LLCLic. #066004440Since 2012Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookJames A Clohessy PCLic. #066005106Since 2018Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookJames G Stewart CPA PCLic. #066005043Since 2018Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookKelly C Laatz CPA PCLic. #066005029Since 2018Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookMichael G Peckham CPA PCLic. #066005147Since 2018Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookMk Group CPAS & Consultants LLCLic. #066005387Since 2019Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookMp360 Tax Services LTDLic. #066005351Since 2019Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookPagliuco Opalacz & Associates PCLic. #066005368Since 2019Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookSassetti LLCLic. #066004404Since 2011Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookSmart Millennium Solutions LTDLic. #066004153Since 2007Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookSukowicz & Clohessy LLPLic. #066004669Since 2015Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookTim J Tebockhorst CPA PCLic. #066005261Since 2018Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookWayne W Haack & Co PCLic. #066005057Since 2018Licensed · current · checked Oct 21, 2026CPA firm · Oak BrookWilliam R. Tucker, C.P.A., P.C.Lic. #066005400Since 2020Licensed · current · checked Oct 21, 2026
Listings show current IDFPR records only. Records for Oak Brook that are not current: 5 cancelled, 27 inactive, 132 not renewed, 1 revoked. Search them in Check a CPA. Discipline shown on listings comes from the same IDFPR data.
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