Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Joseph Jansen, PHARM.D.

Pharmacist in Saint Louis, MO · enumerated 2006.

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

National Provider Identifier

1639262454

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Registry record

Entity type Individual (Type 1)

Name Dr. David Joseph Jansen

Credential PHARM.D.

Sex Male

Practice address 1 Jefferson Barracks Dr, Saint Louis, MO, 63125

Phone (314) 894-6469

Enumeration date Oct 2, 2006

Last updated in NPPES Jan 29, 2009

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License RP00006024 (NM) 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

How do I verify David Jansen's NPI record?

Cross-check NPI 1639262454 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1639262454 active?

Yes, as of the latest NPPES snapshot, NPI 1639262454 is active (record last updated 2009-01-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-29.