Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nancy J. Keck, MD

Developmental - Behavioral Pediatrics Physician in Hoffman Estates, IL · enumerated 2006.

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

National Provider Identifier

1851401046

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Registry record

Entity type Individual (Type 1)

Name Nancy J. Keck

Credential MD

Sex Female

Practice address 1555 Barrington Rd, Doctor Bldg One, #415, Hoffman Estates, IL, 60194

Phone (847) 490-4222

Fax (847) 490-4225

Enumeration date Aug 30, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2080P0006X Developmental - Behavioral Pediatrics Physician Allopathic & Osteopathic Physicians · License 036078054 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
036078054	Medicaid	IL	-

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 Nancy Keck's NPI record?

Cross-check NPI 1851401046 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1851401046 active?

Yes, as of the latest NPPES snapshot, NPI 1851401046 is active (record last updated 2007-07-08).

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