Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Janet M Ludwig, APRN-BC

Q: What is the NPI number for Janet Ludwig?

The National Provider Identifier (NPI) for Janet Ludwig is 1578637153, a Type 1 (individual) record in the CMS NPPES registry.

Medical-Surgical Clinical Nurse Specialist in Saint Louis, MO · enumerated 2006.

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

National Provider Identifier

1578637153

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Registry record

Entity type Individual (Type 1)

Name Janet M Ludwig

Credential APRN-BC

Sex Female

Practice address Saint Louis, MO, 63104

Phone (314) 977-4740

Fax (314) 977-1877

Enumeration date Nov 17, 2006

Last updated in NPPES Nov 5, 2020

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

364SM0705X Medical-Surgical Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 095873 (MO) 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

Where does Janet Ludwig practice?

The practice location on file with NPPES is in Saint Louis, MO. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Janet Ludwig?

The National Provider Identifier (NPI) for Janet Ludwig is 1578637153, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-11-05.