WILLIAM DUONG M.D.
NPI 1427402445
Surgery - Vascular Surgery in Loma Linda, CA

Q: What is William Duong's NPI number?

The NPI number for William Duong is 1427402445. It was assigned to this individual provider in the NPPES registry on April 15, 2016.

Q: What is William Duong's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Vascular Surgery, with taxonomy code 2086S0129X.

Q: When was this NPI record last updated?

The NPPES record for William Duong was last updated on September 11, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years 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.

Active since April 15, 2016PECOS EnrolledAccepts Medicare Assignment

11370 ANDERSON ST STE 2100, LOMA LINDA, CA 92354(909) 558-2822 Get Directions Write a Review

NPPES record last updated: September 11, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 11, 2024, May 19, 2024 (2 updates tracked since 2024).

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About William Duong M.d. NPPES

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

WILLIAM DUONG M.D. (NPI 1427402445) is an individual vascular surgery provider in Loma Linda, California, licensed in California (A151071) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS and is a graduate of Medical College Of Wisconsin (2016).

NPPES Registry Identity

NPI1427402445

Entity TypeIndividualMale

Primary Taxonomy2086S0129X

Provider Legal NameWILLIAM DUONGCredential: M.D.

Location Address11370 ANDERSON ST STE 2100Loma Linda, CA 92354

Mailing Address11175 Campus St Ste 21123Loma Linda, CA 92350-1700 · (909) 558-8648

Phone(909) 558-2822

Sole ProprietorNo

Medical School CMSMedical College Of WisconsinGraduated 2016

Enumeration DateApril 15, 2016

Last NPPES UpdateSeptember 11, 20242 updates tracked since enumeration

NPPES CertifiedSeptember 11, 2024

✔ NPI 1427402445 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Vascular SurgeryAllopathic & Osteopathic Physicians

Taxonomy Code2086S0129X

License✔ Licensed in CA · A151071

Definition

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

Also ListedSurgeryTaxonomy 208600000X · License A151071 (CA)

11370 ANDERSON ST STE 2100, Loma Linda, CA 92354

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

William Duong M.d. 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 ID8325303753

PECOS Enrollment IDI20191113002540

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.

Medicare Billing Reassignments

Medicare enrollment records show William Duong reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Faculty Physicians And Surgeons Of Llusm

Same address

Ophthalmology

11370 ANDERSON ST, SUITE 1800
Loma Linda, CA 92354

Reassigned Medicare billing, California enrollment
2,584 clinicians in this Medicare group

NPI 1437109469 (909) 558-2180

Knd Development 59 LLC

16 mi

Hospitalist

2224 MEDICAL CENTER DR
Perris, CA 92571

Reassigned Medicare billing, California enrollment
204 clinicians in this Medicare group

NPI 1356646400 (951) 436-3535

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 5

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

18 services11 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

16 services14 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

14 services14 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

12 services12 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

12 services12 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92354 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

$91.88 typical visit price

range $59.60 – $179.42

Typical copayment $22.97 (range $14.90 – $44.85)

Most-billed visit code 99203

Established Patient

$74.08 typical visit price

range $19.37 – $146.42

Typical copayment $18.52 (range $4.84 – $36.60)

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.

Other Providers at the Same Location NPPES 20

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

DR. STEVEN D. RAUCH M.D.

Otolaryngology