Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cynthia Ann Gasper, M.D.

Anatomic Pathology Physician in San Francisco, CA · enumerated 2009.

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

National Provider Identifier

1558697946

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Registry record

Entity type Individual (Type 1)

Name Cynthia Ann Gasper

Credential M.D.

Sex Female

Practice address 1001 Potrero Avenue, Bldg 3, 1st Floor, San Francisco, CA, 94110

Phone (415) 353-1613

Fax (628) 206-5988

Enumeration date Oct 20, 2009

Last updated in NPPES Jan 4, 2023

Taxonomy & licenses

207ZP0101X Anatomic Pathology Physician Allopathic & Osteopathic Physicians · License A114754 (CA) Primary

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

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

How do I verify Cynthia Gasper's NPI record?

Cross-check NPI 1558697946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558697946 active?

Yes, as of the latest NPPES snapshot, NPI 1558697946 is active (record last updated 2023-01-04).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-04.