Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mary Asano, M.D.

Q: What is the NPI number for Mary Asano?

The National Provider Identifier (NPI) for Mary Asano is 1558604561, a Type 1 (individual) record in the CMS NPPES registry.

Internal Medicine Physician in Saratoga, CA · enumerated 2013.

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

National Provider Identifier

1558604561

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Registry record

Entity type Individual (Type 1)

Name Mary Asano

Credential M.D.

Sex Female

Practice address Saratoga, CA, 95070

Phone (408) 410-7087

Enumeration date Mar 28, 2013

Last updated in NPPES Mar 28, 2013

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G062839 (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

Where does Mary Asano practice?

The practice location on file with NPPES is in Saratoga, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mary Asano?

The National Provider Identifier (NPI) for Mary Asano is 1558604561, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-28.