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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

EDWARD DIAO MD INC
NPI 1285704536
Orthopaedic Surgery in San Francisco, CA

Active since November 08, 2006CLIA 05D2037615 · Waiver
450 SUTTER ST RM 910, SAN FRANCISCO, CA 94108(415) 362-8880(415) 362-8045 Get Directions Write a Review

NPPES record last updated: August 4, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Aug 4, 2026, Mar 23, 2026, Aug 22, 2020 (3 updates tracked since 2020).

About Edward Diao Md Inc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

EDWARD DIAO MD INC (NPI 1285704536) is a healthcare organization registered as an orthopaedic surgery in San Francisco, California and active in the NPI registry since November 2006. The organization holds a CLIA Waiver certificate valid through March 1, 2028 and lists Diana Perkins, Billing Manager, as its authorized official.

NPPES Registry Identity

NPI1285704536
Entity TypeOrganization
Primary Taxonomy207X00000X
Legal Business NameEDWARD DIAO MD INC
Location Address450 SUTTER ST RM 910San Francisco, CA 94108-3911
Mailing Address450 Sutter St Rm 910San Francisco, CA 94108-3911 · (415) 362-8880 · Fax (415) 362-8045
Phone(415) 362-8880
Fax(415) 362-8045
Organization SubpartNo
Authorized OfficialDiana PerkinsBilling Manager · (650) 229-3092
Enumeration DateNovember 8, 2006
Last NPPES UpdateAugust 4, 20263 updates tracked since enumeration
NPPES CertifiedAugust 4, 2026
✔ NPI 1285704536 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOrthopaedic SurgeryAllopathic & Osteopathic Physicians
Taxonomy Code207X00000X
License✔ Licensed in CA · G77448
Definition
An orthopaedic surgeon is trained in the preservation, investigation and restoration of the form and function of the extremities, spine and associated structures by medical, surgical and physical means. An orthopaedic surgeon is involved with the care of patients whose musculoskeletal problems include congenital deformities, trauma, infections, tumors, metabolic disturbances of the musculoskeletal system, deformities, injuries and degenerative diseases of the spine, hands, feet, knee, hip, shoulder and elbow in children and adults. An orthopaedic surgeon is also concerned with primary and secondary muscular problems and the effects of central or peripheral nervous system lesions of the musculoskeletal system.
450 SUTTER ST RM 910, San Francisco, CA 94108
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2037615

Edward Diao MD · San Francisco, CA
Active · expires Mar 1, 2028
CLIA Number05D2037615
Laboratory TypePhysician Office
Certificate Effective DateMarch 2, 2026
Certificate Expiration DateMarch 1, 2028
Laboratory DirectorEdward Diao
Laboratory Phone(415) 362-8880
Laboratory LocationEdward Diao MD450 Sutter St Ste 910, San Francisco, CA 94108
CLIA data matches this NPI record on: Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. EDWARD DIAO MD
Orthopaedic Surgery
450 SUTTER ST RM 910
SAN FRANCISCO, CA 94108
San Francisco County (415) 362-8880

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Edward Diao MD Inc's NPI number?

The NPI number for Edward Diao MD Inc is 1285704536. It was assigned to this organization in the NPPES registry on November 8, 2006.

Where is Edward Diao MD Inc located?

Edward Diao MD Inc is located at 450 Sutter St Rm 910, San Francisco, CA 94108. The listed phone number is (415) 362-8880.

What is Edward Diao MD Inc's specialty?

The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.

Does Edward Diao MD Inc hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2037615) is associated with this NPI, valid through March 1, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Edward Diao MD Inc was last updated on August 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.