NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Island Sleep Lab LLC

Sleep Disorder Diagnostic Clinic/Center in Hilton Head Island, SC · enumerated 2006 · authorized official Susan Fennell, Managing Partner.

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

National Provider Identifier

1609964964

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Island Sleep Lab LLC
Practice address 58 Shelter Cove Lane, Suite E1, Hilton Head Island, SC, 29928
Fax (843) 842-9963
Enumeration date Oct 11, 2006
Last updated in NPPES Aug 22, 2020

Taxonomy & classification

261QS1200X Sleep Disorder Diagnostic Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Susan Fennell
Title Managing Partner

Other identifiers

Identifier Type State Issuer
PL0083 Medicaid SC -

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 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.
What type of organization is Island Sleep Lab LLC?
Island Sleep Lab LLC is registered in NPPES as a Sleep Disorder Diagnostic Clinic/Center (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.