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

Mr. Richard Chak

Pharmacist in Alhambra, CA · enumerated 2010.

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

National Provider Identifier

1558681718

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Registry record

Entity type Individual (Type 1)

Name Mr. Richard Chak

Sex Male

Practice address Alhambra, CA, 91801

Phone (626) 281-8422

Fax (626) 281-3848

Enumeration date Jun 9, 2010

Last updated in NPPES Jun 9, 2010

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

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 35258 (CA) Primary

183500000X Pharmacist Pharmacy Service Providers · License RPH35258 (CA) Secondary

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.

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Frequently asked questions

How do I verify Richard Chak's NPI record?

Cross-check NPI 1558681718 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558681718 active?

Yes, as of the latest NPPES snapshot, NPI 1558681718 is active (record last updated 2010-06-09).

Other providers at this practice address

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Emily Wang Pharmacist · Alhambra, CA NPI 1396065900 Francisco Dieguez Pharmacy Technician · Alhambra, CA NPI 1275234114 Elaine Ramirez Pharmacy Technician · Alhambra, CA NPI 1386331270

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-09.