Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aileen Westrick

Endocrinology, Diabetes & Metabolism Physician in Carol Stream, IL · enumerated 2009.

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

National Provider Identifier

1770710493

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Registry record

Entity type Individual (Type 1)

Name Aileen Westrick

Sex Female

Practice address 501 Thornhill Dr, Carol Stream, IL, 60188

Phone (630) 688-3210

Enumeration date Jun 20, 2009

Last updated in NPPES Dec 18, 2014

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 036129217 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
1	Other	IL	MEDICAID CPG PAYEE CODE:
206147	Other	IL	MEDICARE PTAN (GROUP)
F400163584	Other	IL	MEDICARE PTAN (INDIVIDUAL)
036129217	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

Is NPI 1770710493 active?

Yes, as of the latest NPPES snapshot, NPI 1770710493 is active (record last updated 2014-12-18).

How do I verify Aileen Westrick's NPI record?

Cross-check NPI 1770710493 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 2014-12-18.