NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Tony M. Chou, M.D.

Cardiovascular Disease Physician in San Francisco, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1457389009

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Tony M. Chou
Credential M.D.
Sex Male
Practice address 400 Parnassus Ave Fl 5, San Francisco, CA, 94143
Phone (415) 353-2873
Fax (415) 353-2528
Enumeration date Jun 30, 2006
Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G64698 (CA) Secondary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License G64698 (CA) Primary
207RI0011X Interventional Cardiology Physician Allopathic & Osteopathic Physicians · License G64698 (CA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
00G646980 Medicaid CA -

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Tony Chou practice?
The practice location on file with NPPES is in San Francisco, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Tony Chou?
The National Provider Identifier (NPI) for Tony Chou is 1457389009, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.