Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Advance Sleep Solutions and Diagnostics Inc

Sleep Medicine (Internal Medicine) Physician in Crystal Lake, IL · enumerated 2006 · authorized official Tanveer Ahmad, Owner.

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

National Provider Identifier

1689742272

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Registry record

Entity type Organization (Type 2)

Legal business name Advance Sleep Solutions and Diagnostics Inc

Practice address 820 F Terra Cotta Ave, Unit 216, Crystal Lake, IL, 60014

Phone (815) 455-1315

Fax (815) 455-1316

Enumeration date Dec 1, 2006

Last updated in NPPES Sep 17, 2009

Taxonomy & classification

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036072630 (IL) Primary

Authorized official

Name Tanveer Ahmad

Title Owner

Phone (815) 338-0900

Other identifiers

Identifier	Type	State	Issuer
036072630	Medicaid	IL	-
05600315	Other	-	BCBS

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 Advance Sleep Solutions and Diagnostics Inc located?

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-09-17. Verify at npiregistry.cms.hhs.gov.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-09-17.