Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Evelyn B Siaskiewicz, PHARMD

Pharmacist in River Forest, IL · enumerated 2020.

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

National Provider Identifier

1083243448

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Registry record

Entity type Individual (Type 1)

Name Dr. Evelyn B Siaskiewicz

Credential PHARMD

Sex Female

Practice address 7251 Lake St, River Forest, IL, 60305

Phone (708) 366-9960

Enumeration date Apr 7, 2020

Last updated in NPPES Apr 7, 2020

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 051.301691 (IL) Primary

PHARMD — Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

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 Evelyn Siaskiewicz's NPI record?

Cross-check NPI 1083243448 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1083243448 active?

Yes — as of the latest NPPES snapshot, NPI 1083243448 is active (record last updated 2020-04-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-07.