Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alan Robert Johnstone

Pharmacist in San Diego, CA · enumerated 2024.

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

National Provider Identifier

1649035403

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Registry record

Entity type Individual (Type 1)

Name Alan Robert Johnstone

Sex Male

Practice address 6655 Alvarado Rd, San Diego, CA, 92120

Phone (619) 229-3150

Enumeration date Feb 20, 2024

Last updated in NPPES Feb 20, 2024

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License RPH40575 (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 NPI 1649035403 active?

Yes — as of the latest NPPES snapshot, NPI 1649035403 is active (record last updated 2024-02-20).

How do I verify Alan Johnstone's NPI record?

Cross-check NPI 1649035403 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 2024-02-20.