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Dr. Siwei Dong , DO

Surgery - Vascular Surgery β€’ Orange, CA

Active NPI 1235690330 Individual Practitioner Female Practitioner Accepts Medicare assignment Telehealth (some services)
Practice location in NPPES

101 The City Dr S
Orange, CA 928683201

Call 7144568888 Location details and other listings
Medical Disclaimer

This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.

Practice Location & Contact Primary Location

Practice Address

101 The City Dr S

Orange, CA 928683201

Telephone 7144568888
Organization at the Same NPPES Address or Phone

Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.

Other Listings in Public Data

NPPES lists 1 additional practice-address record in Cleveland, OH. See the list

Source: CMS NPPES NPI Registry, practice location records; release date unavailable.

CMS Doctors and Clinicians lists 1 group name: University Surgeons Of Orange A Medical Group. See the list

Source: CMS Doctors and Clinicians National Downloadable File, release date unavailable.

Listings do not confirm current availability, employment or a shared ownership network.

Medicare Profile & Education

Source: CMS Doctors and Clinicians National Downloadable File

Medical School

Des Moines University Of Osteopathic Medicine And Health Sciences

Graduation Year

2015

30-day fills

46 standardized 30-day fills in 2022

CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.

What this does not show: 30-day fills

It is not a count of patients and not a measure of quality.

Part D drug cost

$278 in 2022

The total cost of these prescriptions in 2022, paid by Medicare drug plans, patients and other payers together.

What this does not show: Part D drug cost

A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.

Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2022.

Open Payments general payments, program year 2025

All general payments: $377.36 across 5 records.

By nature of payment

  • Food and Beverage: $377.36 across 5 records.

Reporting-company totals

  • Medtronic, Inc.: $232.00 across 4 records.
  • W. L. Gore & Associates, Inc.: $145.36 across 1 record.

A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.

See the full table

Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).

Guide: How to read an Open Payments record

Years since graduation

11 years (graduated 2015)

CMS Doctors and Clinicians data list 2015 as the year this clinician finished professional school.

What this does not show: Years since graduation

It is not the number of years in practice, and more years does not mean better care.

Source: CMS Doctors and Clinicians National Downloadable File.

NPI first issued

2019

The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.

What this does not show: NPI first issued

NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.

Source: CMS NPPES NPI Registry.

Accepts Medicare assignment

CMS data list this clinician as accepting Medicare assignment. This means agreeing to take the Medicare-approved amount as full payment for covered services.

Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.

Source: CMS Doctors and Clinicians; Medicare.gov, β€œDoes your provider accept Medicare as full payment?”

Guide: What Medicare assignment means

Telehealth (some services)

Recent Medicare claims show this clinician provided some services by telehealth, such as a video or phone visit.

What this does not show: Telehealth (some services)

It does not mean all services are offered by telehealth, or that telehealth is covered by your plan.

Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.

Guide: How Medicare covers telehealth

Enrolled in Medicare (PECOS)

Dr. Dong has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.

It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What Medicare enrollment (PECOS) means

Can order Medicare-covered services

CMS lists Dr. Dong as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.

What this does not show: Can order Medicare-covered services

It does not mean the clinician offers these services directly.

Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.

Guide: What ordering and referring status means

Compared with the same specialty in Orange and California

Billing and prescribing volume is not a quality rating.

Medicare Part D

Comparisons use 2024 data. The latest CMS data for Dr. Dong are from 2022.

18 active clinicians are listed under Surgery - Vascular Surgery with a practice address in Orange, CA (580 in California).

Addresses are self-reported to NPPES and may be out of date.

Telehealth indicator in Orange

50% of these 18 clinicians have the CMS telehealth indicator.

72.2% of these 18 clinicians are listed by CMS as accepting Medicare assignment.

Sources: CMS Medicare Part D Prescribers (2022), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.

Text: T-MedInfo Β· Report an error.

Pharma & Medical Device Financial Disclosures

Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments

Open Payments Β· Program Year 2025
Disclosure Year:

Program year 2025 (payments made January 1 – December 31, 2025): fewer than 11 records totaling $377.36.

Manufacturer Payment Nature Product Type Amount ($)
W. L. Gore & Associates, Inc.
Food and Beverage
In-kind items and services
GORE EXCLUDER Thoracoabdominal Branch Endoprosthesis General $145.36
Medtronic, Inc.
Food and Beverage
In-kind items and services
VALIANT CAPTIVIA General $120.44
Medtronic, Inc.
Food and Beverage
In-kind items and services
ENDURANT IIS General $38.00
Medtronic, Inc.
Food and Beverage
In-kind items and services
ENDURANT IIS General $37.73
Medtronic, Inc.
Food and Beverage
In-kind items and services
ENDURANT IIS General $35.83

Source: CMS Open Payments, program year 2025, released June 30, 2026.

Medicare Part D Prescribing Profile & Medications

Medicare Part D prescriptions filled, including refills, in 2022.

CMS Part D Β· Data Year 2022
Prescription Year:
Brand Name Generic Name Prescriptions Day Supply Total Cost Patients
Oxycodone-Acetaminophen Oxycodone Hcl/Acetaminophen 29 77 $124.69 29
Clopidogrel Clopidogrel Bisulfate 16 510 $153.05 β€”

Source: CMS Part D by Provider and Drug, 2022; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits

Specialties & License Numbers Reported to NPPES

Self-certified to NPPES: 2024-10-16
Surgery - Vascular Surgery Primary Specialty

NUCC Taxonomy Code: 2086S0129X

License # reported to NPPES CA A22413

A surgeon with expertise in the management of surgical disorders of the blood vessels, excluding the intracranial vessels or the heart.

Check License Status with the State Board License numbers are self-reported to NPPES; T-MedInfo does not confirm them against state records. Current status: Medical Board of California.
Look Up on State Board Site

Medicare (PECOS) Enrollment & Ordering Eligibility

Source: CMS PECOS
Medicare FFS Enrollment Status Medicare Enrollment on File
CMS Provider Specialty

PRACTITIONER - VASCULAR SURGERY

Medicare Enrollment ID

I20241015002847

Enrollment State Jurisdiction

CA

PECOS Control ID

1850624628

Medicare Order & Referring Eligibility
Clinical Lab & Imaging (Part B) Eligible
Durable Medical Equipment (DME) Eligible
Home Health Agency (HHA) Eligible
Power Mobility Devices (PMD) Eligible

Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.

Medicare Group Practice Enrollments

Source: CMS Doctors and Clinicians National Downloadable File

University Surgeons Of Orange A Medical Group

101 The City Dr S, Orange, CA 928683201

Phone: 7146345549

Secondary Practice Locations

9500 Euclid Ave # Na23

Cleveland, OH 441950001

Phone: 2164442200

Clinicians Sharing This Practice Address or Phone

Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.

31 listed
NPI 1114505781

Doctor of Medicine (M.D.)

Dr. Angela Azar , MD

Anesthesiology

NPI 1164494274

Doctor of Medicine (M.D.)

Dr. Sean Cantwell , MD

Surgery - Plastic and Reconstructive Surgery

NPI 1124557723

Doctor of Medicine (M.D.)

Dr. Frances Chow , MD

Neurological Surgery

NPI 1063830735

Doctor of Medicine (M.D.)

Nicole Creef , CRNA

Nurse Anesthetist, Certified Registered

NPI 1043983570

Certified Registered Nurse Anesthetist

NPI 1033355235

Doctor of Medicine (M.D.)

Career & Practice History Timeline

Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status

9 Historical Events
πŸ“
Updated Practice Location October 16, 2024

Registered at 101 THE CITY DR S, ORANGE, CA 928683201 (Tel: 7144568888)

πŸ“
Updated Business Mailing Address October 16, 2024

Registered at 200 S MANCHESTER AVE STE 300, ORANGE, CA 928683219 (Tel: 7144568888)

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) October 16, 2024

Surgery (license number reported to NPPES: CA A22413)

βœ…
NPI Profile Active March 29, 2019

NPI status registered as active in NPPES database

πŸ“
Practice Location (Initial Record) March 29, 2019

Registered at 9500 EUCLID AVE # NA23, CLEVELAND, OH 441950001 (Tel: 2164442200)

πŸ“
Business Mailing Address (Initial Record) March 29, 2019

Registered at 9500 EUCLID AVE # NA23, CLEVELAND, OH 441950001 (Tel: 2164442200)

πŸ‘€
Provider Name / Credentials (Initial Record) March 29, 2019

Recorded as SIWEI DONG, DO

πŸŽ“
Medical Taxonomy / Specialty Registered (Primary Specialty) March 29, 2019

Student in an Organized Health Care Education/Training Program

🟒
Initial NPI Registration & Enumeration March 29, 2019

First registered as active Individual Practitioner in NPPES Database.

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NPI Administrative Meta

NPI Number: 1235690330
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 29, 2019
Last Update: October 16, 2024
Sole Proprietor: Yes

Other Surgery - Vascular Surgery Specialists in Orange

All Surgery - Vascular Surgery Specialists in Orange

Mailing Address

200 S Manchester Ave Ste 300

Orange, CA 928683219

Phone: 7144568888

About This Data NPPES fields (address, phone, specialty, license) are self-reported and may be outdated; Medicare fields follow the CMS dataset named in each section. Correct directly at NPPES.