Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mariel Velez, M.D. PH.D.

Neurology Physician in San Francisco, CA · enumerated 2011.

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

National Provider Identifier

1427347053

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Registry record

Entity type Individual (Type 1)

Name Dr. Mariel Velez

Credential M.D. PH.D.

Sex Female

Practice address 1100 Van Ness Ave Fl 6, San Francisco, CA, 94109

Phone (415) 600-7880

Fax (415) 369-1373

Enumeration date Apr 5, 2011

Last updated in NPPES Jun 2, 2022

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 1065661 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
A122200	Other	CA	STATE MEDICAL LICENSE

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

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.

What specialty is Mariel Velez?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-06-02.