Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Chicago Pulmonary and Sleep Disorders Institute Ltd

Pulmonary Disease Physician in Lombard, IL · enumerated 2015 · authorized official Jacek Pieta, Owner/Physician.

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

National Provider Identifier

1720470115

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Registry record

Entity type Organization (Type 2)

Legal business name Chicago Pulmonary and Sleep Disorders Institute Ltd

Practice address 1742 S La Londe Ave, Lombard, IL, 60148

Phone (630) 338-9366

Enumeration date Feb 23, 2015

Last updated in NPPES Mar 24, 2016

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 036087837 (IL) Primary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036087837 (IL) Secondary

Authorized official

Name Jacek Pieta

Title Owner/Physician

Phone (630) 338-9366

Other identifiers

Identifier	Type	State	Issuer
042620236	Other	IL	BUSINESS

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

What type of organization is Chicago Pulmonary and Sleep Disorders Institute Ltd?

Chicago Pulmonary and Sleep Disorders Institute Ltd is registered in NPPES as a Pulmonary Disease Physician (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-24.