Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Aaron Pietrykowski

Pharmacist in Chicago, IL · enumerated 2020.

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

National Provider Identifier

1962007179

Verified

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Registry record

Entity type Individual (Type 1)

Name Aaron Pietrykowski

Sex Male

Practice address 2313 N Lincoln Ave, Chicago, IL, 60614

Phone (773) 360-8595

Fax (773) 697-8249

Enumeration date Dec 3, 2020

Last updated in NPPES Dec 3, 2020

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 051.289455 (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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Aaron Pietrykowski?

Aaron Pietrykowski is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-03.