NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Chest & Sleep Medicine Associates S.C.

Pulmonary Disease Physician in Libertyville, IL · enumerated 2006 · authorized official Dennis Hoffman, Owner.

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

National Provider Identifier

1780604116

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Chest & Sleep Medicine Associates S.C.
Practice address 755 S Milwaukee Ave Ste 181, Libertyville, IL, 60048
Phone (847) 855-2430
Fax (847) 855-2490
Enumeration date Jul 20, 2006
Last updated in NPPES Jun 7, 2023

Taxonomy & classification

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036085568 (IL) Secondary
207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 036085568 (IL) Primary

Authorized official

Name Dennis Hoffman
Title Owner
Phone (847) 573-9031

Other identifiers

Identifier Type State Issuer
04927890 Other IL BLUE CROSS/SHIELD

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

Where is Chest & Sleep Medicine Associates S.C. located?
The practice location on file with NPPES is in Libertyville, IL.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-06-07. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-07.