NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Sleep Science Partners, Inc.

Sleep Disorder Diagnostic Clinic/Center in Larkspur, CA · enumerated 2011 · authorized official William Johnson, Manager, Clinical Operations.

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

National Provider Identifier

1811273683

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Sleep Science Partners, Inc.
Practice address 900 Larkspur Landing Cir, Suite 207, Larkspur, CA, 94939
Fax (415) 925-1575
Enumeration date Oct 25, 2011
Last updated in NPPES Oct 25, 2011

Taxonomy & classification

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

Authorized official

Name William Johnson
Title Manager, Clinical Operations

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 2011-10-25. Verify at npiregistry.cms.hhs.gov.
Where is Sleep Science Partners, Inc. located?
The practice location on file with NPPES is in Larkspur, CA.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-25.