Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marc-Alan Iwahashi, M.D.,

Family Medicine Physician in Cupertino, CA · enumerated 2005 · practices at Zitman and Jalilie.

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

National Provider Identifier

1235123985

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Registry record

Entity type Individual (Type 1)

Name Dr. Marc-Alan Iwahashi

Credential M.D.,

Sex Male

Practice address 20555 Prospect Rd, Suite A, Cupertino, CA, 95014

Phone (408) 253-5811

Fax (408) 725-0583

Enumeration date Sep 8, 2005

Last updated in NPPES Jan 5, 2012

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License G68531 (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
00G685310	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1235123985 active?

Yes, as of the latest NPPES snapshot, NPI 1235123985 is active (record last updated 2012-01-05).

How do I verify Marc-Alan Iwahashi's NPI record?

Cross-check NPI 1235123985 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-05.