Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gena Lee Lewis, MD

Pediatrics Physician in Oakland, CA · enumerated 2006.

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

National Provider Identifier

1124053830

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Registry record

Entity type Individual (Type 1)

Name Dr. Gena Lee Lewis

Credential MD

Sex Female

Practice address 5220 Claremont Ave, Oakland, CA, 94618

Phone (510) 428-3885

Fax (510) 547-2702

Enumeration date Jul 11, 2006

Last updated in NPPES Jul 18, 2007

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A061397 (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
GR0095800	Medicaid	CA	-
680572143	Other	CA	FEDERAL TAX ID NO. INPATI
542125582	Other	CA	FEDERAL TAX ID NO.-OUTPAT

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 specialty is Gena Lewis?

Gena Lewis is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-18.