Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Janet Lenz, APN

Nurse Practitioner in Barrington, IL · enumerated 2010.

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

National Provider Identifier

1619297934

Verified

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Registry record

Entity type Individual (Type 1)

Name Janet Lenz

Credential APN

Sex Female

Practice address 523 W Old Northwest Hwy, Suite 100, Barrington, IL, 60010

Phone (847) 381-1200

Fax (847) 381-1904

Enumeration date Jun 9, 2010

Last updated in NPPES Jun 9, 2010

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209008175 (IL) 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.

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Frequently asked questions

How do I verify Janet Lenz's NPI record?

Cross-check NPI 1619297934 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1619297934 active?

Yes, as of the latest NPPES snapshot, NPI 1619297934 is active (record last updated 2010-06-09).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-09.