Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Kastner III

Pharmacist in Minneapolis, MN · enumerated 2014 · practices at Walgreen Co.

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

National Provider Identifier

1821497355

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name John Kastner III

Sex Male

Practice address 3700 Silver Lake Rd Ne, Minneapolis, MN, 55421

Phone (612) 706-1988

Enumeration date Aug 20, 2014

Last updated in NPPES Sep 16, 2016

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 121318 (MN) 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 1821497355 active?

Yes, as of the latest NPPES snapshot, NPI 1821497355 is active (record last updated 2016-09-16).

How do I verify John Kastner's NPI record?

Cross-check NPI 1821497355 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Walgreen Co Pharmacy · Saint Anthony, MN NPI 1114933751 Angela Hanggi Pharmacist · Minneapolis, MN NPI 1972888980 Allison Erickson Pharmacist · Saint Anthony, MN NPI 1861779530 Benjamin Paolucci Pharmacist · Minneapolis, MN NPI 1972276376 Francesca Rossi Pharmacist · Saint Anthony, MN NPI 1932863727 Janice Borys Pharmacist · Minneapolis, MN NPI 1356049514

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-09-16.