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-nevada-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 Spencer Halloran

CPA · Mark S. Halloran & Associates, PC

Las Vegas, Nevada 89120

Mark Spencer Halloran, CPA in Las Vegas, NV

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Mark Spencer Halloran, CPA in Las Vegas · CPA Seek