Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nancy Hamp, MA

Professional Counselor in Oak Brook, IL · enumerated 2020 · practices at Perrotta and Kraus Phds PC.

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

National Provider Identifier

1659911352

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Registry record

Entity type Individual (Type 1)

Name Nancy Hamp

Credential MA

Sex Female

Practice address 2625 Butterfield Rd Ste 101n, Oak Brook, IL, 60523

Phone (630) 586-0900

Enumeration date Jan 10, 2020

Last updated in NPPES Jan 10, 2020

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 6401004294 (MI) Secondary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 180.012619 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Nancy Hamp's NPI record?

Cross-check NPI 1659911352 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1659911352 active?

Yes, as of the latest NPPES snapshot, NPI 1659911352 is active (record last updated 2020-01-10).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-10.