Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Lewis Zhiyuan Leng, M.D.

Neurological Surgery Physician in San Francisco, CA · enumerated 2008.

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

National Provider Identifier

1508018508

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Registry record

Entity type Individual (Type 1)

Name Dr. Lewis Zhiyuan Leng

Credential M.D.

Sex Male

Practice address 1100 Van Ness Ave, San Francisco, CA, 94109

Phone (415) 600-0528

Fax (415) 369-1207

Enumeration date Oct 21, 2008

Last updated in NPPES May 6, 2020

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 1145285 (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
A124672	Other	CA	STATE MEDICAL LICENSE
1508018508	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

How do I verify Lewis Leng's NPI record?

Cross-check NPI 1508018508 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1508018508 active?

Yes, as of the latest NPPES snapshot, NPI 1508018508 is active (record last updated 2020-05-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-05-06.