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

Michael Howard Prosser

CPA · King, Reinsch, Prosser & Co., L.L.P.

Sioux City, Iowa 51101

Michael Howard Prosser, CPA in Sioux City, IA

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Michael Howard Prosser, CPA in Sioux City · CPA Seek