Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Debbie Choi Man Chan, MPA

Q: What is the NPI number for Debbie Chan?

The National Provider Identifier (NPI) for Debbie Chan is 1891084117, a Type 1 (individual) record in the CMS NPPES registry.

Physician Assistant in Walnut Creek, CA · enumerated 2011.

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

National Provider Identifier

1891084117

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Registry record

Entity type Individual (Type 1)

Name Ms. Debbie Choi Man Chan

Credential MPA

Sex Female

Practice address Walnut Creek, CA, 94597

Phone (925) 937-1770

Fax (925) 296-9054

Enumeration date Apr 7, 2011

Last updated in NPPES Apr 24, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA21538 (CA) Primary

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 Debbie Chan practice?

The practice location on file with NPPES is in Walnut Creek, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Debbie Chan?

The National Provider Identifier (NPI) for Debbie Chan is 1891084117, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-24.