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

Douglas K Osthimer

CPA · Osthimer Business Services, LLC

South Bend, Indiana 46617

Douglas K Osthimer, CPA in South Bend, IN

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Douglas K Osthimer, CPA in South Bend · CPA Seek