Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mercy Pharmacy Services LLC

Community/Retail Pharmacy in Lake Saint Louis, MO · enumerated 2021 · authorized official Doug Malcolm, Vice President.

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

National Provider Identifier

1326712191

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Registry record

Entity type Organization (Type 2)

Legal business name Mercy Pharmacy Services LLC

Practice address 6450 Ronald Reagan Dr, Lake Saint Louis, MO, 63367

Phone (314) 398-4460

Enumeration date Aug 5, 2021

Last updated in NPPES Jan 26, 2026

Taxonomy & classification

333600000X Pharmacy Suppliers Secondary

3336C0003X Community/Retail Pharmacy Suppliers Primary

Authorized official

Name Doug Malcolm

Title Vice President

Phone (303) 813-5532

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-01-26. Verify at npiregistry.cms.hhs.gov.

Where is Mercy Pharmacy Services LLC located?

The practice location on file with NPPES is in Lake Saint Louis, MO.

Providers at this address

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Catherine Vollmar Ambulatory Care Pharmacist · Lake Saint Louis, MO NPI 1134853443

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-01-26.