Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sierra Corrigan

Pharmacist in Clarksville, MD · enumerated 2023.

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

National Provider Identifier

1891572640

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Registry record

Entity type Individual (Type 1)

Name Sierra Corrigan

Sex Female

Practice address 12400 Auto Dr, Clarksville, MD, 21029

Phone (410) 531-6030

Enumeration date Sep 13, 2023

Last updated in NPPES Sep 13, 2023

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 29433 (MD) 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

How do I verify Sierra Corrigan's NPI record?

Cross-check NPI 1891572640 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891572640 active?

Yes, as of the latest NPPES snapshot, NPI 1891572640 is active (record last updated 2023-09-13).

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Walgreen Co Pharmacy · Clarksville, MD NPI 1427231646 Marcel Ilo Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist · Clarksville, MD NPI 1447531389 Dharmang Mehta Pharmacist · Clarksville, MD NPI 1689956781 Poh Pham Pharmacist · Clarksville, MD NPI 1376825513 An Dinh Pharmacist · Clarksville, MD NPI 1164195012 Walgreen Co. Pharmacy · Clarksville, MD NPI 1457106221

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-13.