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4621 Corporation

Skilled Nursing Facility in Chicago, IL · enumerated 2005 · authorized official Peter Obrien, President.

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

National Provider Identifier

1871580126

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Registry record

Entity type Organization (Type 2)
Legal business name 4621 Corporation
Other name <Unavail>
Practice address 4621 N Racine Ave, Chicago, IL, 60640
Phone (773) 784-2300
Fax (773) 769-4621
Enumeration date Oct 3, 2005
Last updated in NPPES Apr 8, 2019

Taxonomy & classification

314000000X Skilled Nursing Facility Nursing & Custodial Care Facilities · License 0023770 Primary

Authorized official

Name Peter Obrien
Title President
Phone (312) 787-9400

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

What is the NPI number for 4621 Corporation?
The NPI for 4621 Corporation is 1871580126, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for 4621 Corporation?
NPPES lists Peter Obrien (President) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-08.