Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Edward Diao MD Inc

Orthopaedic Surgery Physician in San Francisco, CA · enumerated 2006 · authorized official Diana Perkins, Billing Manager.

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

National Provider Identifier

1285704536

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Registry record

Entity type Organization (Type 2)

Legal business name Edward Diao MD Inc

Practice address 450 Sutter St Rm 910, San Francisco, CA, 94108

Phone (415) 362-8880

Fax (415) 362-8045

Enumeration date Nov 8, 2006

Last updated in NPPES Aug 4, 2026

Taxonomy & classification

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License G77448 (CA) Primary

Authorized official

Name Diana Perkins

Title Billing Manager

Phone (650) 229-3092

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

Where is Edward Diao MD Inc located?

The practice location on file with NPPES is in San Francisco, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2026-08-04. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Edward Diao Orthopaedic Surgery Physician · San Francisco, CA NPI 1427009794

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-08-04.