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DR. EDWARD DIAO MD
NPI 1427009794
Orthopaedic Surgery in San Francisco, CA

Active since May 12, 2006PECOS EnrolledAccepts Medicare Assignment
450 SUTTER ST RM 910, SAN FRANCISCO, CA 94108(415) 362-8880(415) 362-8045 Get Directions Write a Review

NPPES record last updated: January 22, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Edward Diao Md NPPES

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

DR. EDWARD DIAO MD (NPI 1427009794) is an individual orthopaedic surgery provider in San Francisco, California, licensed in California (G77448) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Columbia University College Of Physicians And Surgeons (1981).

NPPES Registry Identity

NPI1427009794
Entity TypeIndividualMale
Primary Taxonomy207X00000X
Provider Legal NameDR. EDWARD DIAOCredential: MD
Location Address450 SUTTER ST RM 910San Francisco, CA 94108-3911
Mailing Address450 Sutter St, Suite 500San Francisco, CA 94108-4206 · (415) 362-8880 · Fax (415) 393-9633
Phone(415) 362-8880
Fax(415) 362-8045
Sole ProprietorYes
Medical School CMSColumbia University College Of Physicians And SurgeonsGraduated 1981
Enumeration DateMay 12, 2006
Last NPPES UpdateJanuary 22, 2026
NPPES CertifiedJanuary 22, 2026
✔ NPI 1427009794 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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.
Also ListedOrthopaedic Surgery · Hand SurgeryTaxonomy 207XS0106X · License G77448 (CA)
450 SUTTER ST RM 910, San Francisco, CA 94108
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Other Identifiers 1

Medicaid00G774480CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Edward Diao Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5294709952
PECOS Enrollment IDI20070329000690
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Imaging guidance for procedure, 60 minutes or less 76000
Imaging guidance is a procedure where real-time images are used to direct medical tools during a treatment. This technique helps to improve accuracy and safety. The procedure typically lasts 60 minutes or less.
153 services79 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
115 services68 patients
New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
66 services66 patients
Complete ultrasound scan of joint 76881
A complete ultrasound scan of a joint is a non-invasive procedure using sound waves to create images of your joint. It helps identify problems like inflammation, injury, or disease. It's painless, safe, and doesn't involve radiation.
45 services34 patients
Aspiration and/or injection of fluid from small joint 20600
This procedure involves inserting a thin needle into a small joint to remove (aspirate) or inject fluid. It can help diagnose conditions, relieve discomfort, or administer medication directly into the joint. It's generally safe with minimal discomfort.
32 services23 patients
Measurement of range of motion of hand 95852
The measurement of range of motion of the hand is a test to assess the flexibility and movement of your hand joints. It involves bending, stretching and rotating your hand to check for any limitations or discomfort. This helps in diagnosing conditions like arthritis or injuries.
25 services13 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94108 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$104.51 typical visit price
range $69.00 – $202.35
Typical copayment $26.12 (range $17.25 – $50.58)
Most-billed visit code 99203
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims 3

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Dynamic adjustable finger extension/flexion device, includes soft interface material E1825
DME-Orthotic Devices · category DF000N
1 supplier12 claims12 services$81.21 avg. paid by Medicare
Wrist hand finger orthosis, without joint(s), prefabricated, off-the-shelf, any type L3809
DME-Orthotic Devices · category DF000N
2 suppliers11 claims11 services$186.04 avg. paid by Medicare
Wrist hand orthosis, wrist extension control cock-up, non molded, prefabricated, off-the-shelf L3908
DME-Orthotic Devices · category DF000N
1 supplier12 claims13 services$61.12 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES

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

EDWARD DIAO, M. D.
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's NPI number?

The NPI number for Edward Diao is 1427009794. It was assigned to this individual provider in the NPPES registry on May 12, 2006.

Where is Edward Diao located?

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

What is Edward Diao's specialty?

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

Is Edward Diao enrolled in Medicare?

Yes. Edward Diao is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

When was this NPI record last updated?

The NPPES record for Edward Diao was last updated on January 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.