Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Nanci E. Karczewski, M.A.

Professional Counselor in Grayling, MI · enumerated 2010.

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

National Provider Identifier

1851608145

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Registry record

Entity type Individual (Type 1)

Name Ms. Nanci E. Karczewski

Credential M.A.

Sex Female

Practice address 204 Meadows Dr, Grayling, MI, 49738

Phone (989) 348-0011

Fax (989) 348-6434

Enumeration date Sep 8, 2010

Last updated in NPPES Sep 8, 2010

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 6401008243 (MI) 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 1851608145 active?

Yes, as of the latest NPPES snapshot, NPI 1851608145 is active (record last updated 2010-09-08).

How do I verify Nanci Karczewski's NPI record?

Cross-check NPI 1851608145 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 2010-09-08.