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

William O'Brien

CPA · Hartman Hartman & O'Brien PA

Lady Lake, Florida 32159

William O'Brien, CPA in Lady Lake, FL

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William O'Brien, CPA in Lady Lake · CPA Seek