Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Allison Ngan

Pharmacist in San Francisco, CA · enumerated 2019.

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

National Provider Identifier

1053884767

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Registry record

Entity type Individual (Type 1)

Name Allison Ngan

Sex Female

Practice address 500 Parnassus Ave, San Francisco, CA, 94143

Phone (415) 681-3394

Enumeration date Jan 4, 2019

Last updated in NPPES Aug 23, 2020

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License RPH79834 (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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Allison Ngan?

Allison Ngan is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-23.