Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alaina E Mercier, PHARMD

Pharmacist in Chesterfield, MO · enumerated 2023.

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

National Provider Identifier

1144902503

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Registry record

Entity type Individual (Type 1)

Name Alaina E Mercier

Credential PHARMD

Sex Female

Practice address 14805 N Outer 40 Rd, Chesterfield, MO, 63017

Phone (636) 733-7333

Fax (636) 733-7334

Enumeration date Aug 4, 2023

Last updated in NPPES Aug 4, 2023

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 2023031936 (MO) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

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 this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Alaina Mercier?

Alaina Mercier is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-04.