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-kansas-extract.csv No state license number is on file. Specialties are blank until this preparer claims the listing. CPA Seek does not contact preparers.

Ian Oak Osler

CPA · MarksNelson Advisory, LLC

Overland Park, Kansas 66211

Ian Oak Osler, CPA in Overland Park, KS

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Ian Oak Osler, CPA in Overland Park · CPA Seek