Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Roger William Lewis, MD

Obstetrics & Gynecology Physician in Turlock, CA · enumerated 2006.

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

National Provider Identifier

1699876086

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Registry record

Entity type Individual (Type 1)

Name Mr. Roger William Lewis

Credential MD

Sex Male

Practice address 1729 N Olive Ave, 3, Turlock, CA, 95382

Phone (209) 634-9034

Fax (209) 634-0794

Enumeration date Sep 26, 2006

Last updated in NPPES Oct 19, 2022

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License G65192 (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
1699876086	Medicaid	CA	-
GR0043050	Medicaid	CA	-

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

What specialty is Roger Lewis?

Roger Lewis is registered in NPPES with the primary taxonomy of Obstetrics & Gynecology 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 2022-10-19.