Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Northwest Pulmonary and Sleep Medicine Sc

Legal Medicine in Algonquin, IL · enumerated 2007 · authorized official Dennis Kellar, Owner/Physician.

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

National Provider Identifier

1881878221

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name Northwest Pulmonary and Sleep Medicine Sc

Practice address 1340 Ryan Pkwy, Algonquin, IL, 60102

Phone (815) 477-7350

Fax (815) 477-7351

Enumeration date Dec 20, 2007

Last updated in NPPES Sep 1, 2020

Taxonomy & classification

173000000X Legal Medicine Other Service Providers · License 036-104219 (IL) Primary

Authorized official

Name Dennis Kellar

Title Owner/Physician

Phone (815) 477-7350

Other identifiers

Identifier	Type	State	Issuer
216086	Other	-	PTAN

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 current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-09-01. Verify at npiregistry.cms.hhs.gov.

Where is Northwest Pulmonary and Sleep Medicine Sc located?

The practice location on file with NPPES is in Algonquin, IL.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-09-01.