Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Malcolm Michael Armstrong Sr.

Pharmacist in Mandeville, LA · enumerated 2014.

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

National Provider Identifier

1558760553

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Registry record

Entity type Individual (Type 1)

Name Malcolm Michael Armstrong Sr.

Sex Male

Practice address 3009 E Causeway Approach, Mandeville, LA, 70448

Phone (985) 626-1118

Fax (985) 626-1611

Enumeration date Aug 15, 2014

Last updated in NPPES Aug 15, 2014

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 014691 (LA) Primary

183500000X Pharmacist Pharmacy Service Providers · License 015295 (GA) Secondary

183500000X Pharmacist Pharmacy Service Providers · License 106308 (MS) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1558760553 active?

Yes, as of the latest NPPES snapshot, NPI 1558760553 is active (record last updated 2014-08-15).

How do I verify Malcolm Armstrong's NPI record?

Cross-check NPI 1558760553 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-08-15.