Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Ludvigsen, N.P.

Family Nurse Practitioner in Oak Park, IL · enumerated 2006.

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

National Provider Identifier

1194740514

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Registry record

Entity type Individual (Type 1)

Name Mary Ludvigsen

Credential N.P.

Sex Female

Practice address 6831 North Ave, Oak Park, IL, 60302

Phone (708) 298-0540

Enumeration date Jul 13, 2006

Last updated in NPPES Dec 11, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 0033192 (OH) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209.003905 (IL) Primary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704397286 (MI) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F351485 (NY) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71013806A (IN) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1467233 (WI) Secondary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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 Mary Ludvigsen's NPI record?

Cross-check NPI 1194740514 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1194740514 active?

Yes, as of the latest NPPES snapshot, NPI 1194740514 is active (record last updated 2023-12-11).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-11.