Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary L Nierzwicki, NP-C

Adult Health Nurse Practitioner in Bloomington, IN · enumerated 2006.

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

National Provider Identifier

1649288853

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Registry record

Entity type Individual (Type 1)

Name Mary L Nierzwicki

Credential NP-C

Sex Female

Practice address 600 N Jordan Ave, Bloomington, IN, 47405

Phone (812) 855-3284

Enumeration date Aug 3, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 71000117 (IN) 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

Is NPI 1649288853 active?

Yes, as of the latest NPPES snapshot, NPI 1649288853 is active (record last updated 2007-07-08).

How do I verify Mary Nierzwicki's NPI record?

Cross-check NPI 1649288853 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.