Listed as a CPA in IRS public preparer records. Source: IRS PTIN FOIA extract (Feb 2026), retrieved October 23, 2026. https://www.irs.gov/pub/foia/foia-wisconsin-extract.csv No state license number is on file. Specialties are blank until this preparer claims the listing. CPA Seek does not contact preparers.

Mark J. Chamberlain

CPA, Attorney · Trust Point Inc

La Crosse, Wisconsin 54601

Mark J. Chamberlain, CPA, Attorney in La Crosse, WI

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Mark J. Chamberlain, CPA in La Crosse · CPA Seek