Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William Beck Lewis, MD

Otolaryngology Physician in Oakland, CA · enumerated 2006.

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

National Provider Identifier

1124081112

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Registry record

Entity type Individual (Type 1)

Name William Beck Lewis

Credential MD

Sex Male

Practice address 2961 Summit St, Suite 1, Oakland, CA, 94609

Phone (510) 465-0941

Fax (510) 465-0941

Enumeration date Apr 10, 2006

Last updated in NPPES Apr 29, 2024

Taxonomy & licenses

207YX0901X Otology & Neurotology Physician Allopathic & Osteopathic Physicians · License G86559 (CA) Secondary

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License G86559 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00G865590	Medicaid	CA	-
G86559	Other	CA	ALTA BATES MEDICAL GROUP
032983	Other	CA	HILLS PHYSICIANS

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.

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Frequently asked questions

How do I verify William Lewis's NPI record?

Cross-check NPI 1124081112 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1124081112 active?

Yes, as of the latest NPPES snapshot, NPI 1124081112 is active (record last updated 2024-04-29).

Other providers at this practice address

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Summit Ent Medical Associates Otolaryngology Physician · Oakland, CA NPI 1528020609 Andrew Moyce Otolaryngology Physician · Oakland, CA NPI 1710949896 Bernard Drury Otolaryngology Physician · Oakland, CA NPI 1194788778 David Hicks Audiologist · Oakland, CA NPI 1801053350 Jessa Muscio Traylor Audiologist · Oakland, CA NPI 1952568404 Summit Hearing Assist, LLC Assistive Technology Practitioner Audiologist · Oakland, CA NPI 1497050249 Dereck Byrd Mental Health Counselor · Oakland, CA NPI 1033512348

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-29.