Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Walgreen Co

Q: What is the NPI number for Walgreen Co?

The NPI for Walgreen Co is 1538683552, a Type 2 (organization) record in the CMS NPPES registry.

Pharmacy in Danbury, CT · enumerated 2017 · authorized official Alan Nielsen, Treasurer.

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

National Provider Identifier

1538683552

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Registry record

Entity type Organization (Type 2)

Legal business name Walgreen Co

Other name <Unavail>

Parent organization Walgreens Boots Alliance Inc

Practice address 113/115 Mill Plain Rd, Danbury, CT, 06811

Phone (203) 798-7520

Fax (203) 798-9720

Enumeration date Aug 1, 2017

Last updated in NPPES Aug 1, 2017

Taxonomy & classification

332B00000X Durable Medical Equipment & Medical Supplies Suppliers Secondary

333600000X Pharmacy Suppliers Primary

3336C0003X Community/Retail Pharmacy Suppliers Secondary

Authorized official

Name Alan Nielsen

Title Treasurer

Phone (847) 315-3523

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

What is the NPI number for Walgreen Co?

The NPI for Walgreen Co is 1538683552, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Walgreen Co?

NPPES lists Alan Nielsen (Treasurer) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-08-01.