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

Ellis Hsu-Mastromonaco

CPA · Ellis Hsu-mastromonaco, CPA

San Francisco, California 94131

Ellis Hsu-Mastromonaco, CPA in San Francisco, CA

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Ellis Hsu-Mastromonaco, CPA in San Francisco · CPA Seek