Thomas Dennisen Partner

Thomas Dennisen


Lawyer, Tax consultant

Areas of expertise

Special sector knowledge

  • Public & social sector
  • Healthcare & life sciences
  • Real estate


  • German
  • English

Brief biography

  • Since 2020 Forvis Mazars (formerly Mazars)
  • 2015 - 2020 Partner WTS Steuerberatungsgesellschaft mbH, Cologne + WTS Legal GmbH
  • 2008 - 2015 KPMG AG Auditing Company, Cologne
  • 1998 - 2007 KPMG AG Auditing Company, Essen
  • 2002 Admission as tax consultant
  • 1998 Admission as lawyer
  • 1995 -1997 Legal clerkship in the district of the Higher Regional Court of Düsseldorf
  • 1989 - 1994 Law studies, University of Bonn


Thomas Dennisen joined Forvis Mazars (formerly Mazars) as a Partner in 2020 and advises in the real estate and healthcare sectors regarding reorganizations, restructurings, and transactions. His clients include international real estate groups, project developers and asset managers, globally active groups and various non-profit institutions in the healthcare sector. Previously, Thomas Dennisen worked as a partner at WTS and KPMG in tax structuring and transaction advice in the real estate sector as well as in non-profit and healthcare.

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