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DR. SEAN XUN WANG MD
NPI 1225295033
Otolaryngology in Fremont, CA

Active since May 20, 2008PECOS EnrolledAccepts Medicare Assignment
3200 KEARNEY ST., FREMONT, CA 94538(510) 490-1222 Get Directions Write a Review

NPPES record last updated: May 28, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 28, 2020, Oct 21, 2016 (2 updates tracked since 2016).

About Dr. Sean Xun Wang Md NPPES

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

DR. SEAN XUN WANG MD (NPI 1225295033) is an individual otolaryngology provider in Fremont, California, licensed in California (A124816) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS and is a graduate of University Of Texas Medical School At San Antonio (2008).

NPPES Registry Identity

NPI1225295033
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameDR. SEAN XUN WANGCredential: MD
Location Address3200 KEARNEY ST.Fremont, CA 94538-4402
Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (510) 490-1222
Phone(510) 490-1222
Sole ProprietorNo
Medical School CMSUniversity Of Texas Medical School At San AntonioGraduated 2008
Enumeration DateMay 20, 2008
Last NPPES UpdateMay 28, 20202 updates tracked since enumeration
NPPES CertifiedMay 28, 2020
✔ NPI 1225295033 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in CA · A124816
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
3200 KEARNEY ST., Fremont, CA 94538
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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

Dr. Sean Xun Wang 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 ID6406095074
PECOS Enrollment IDI20130612000440
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

2

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

Sutter Bay Medical Foundation
0.1 mi
Ambulatory Surgical
3140 KEARNEY ST
Fremont, CA 94538
NPI 1497996524 (510) 498-2819
University Of California Sfgh Medical Group
28 mi
Endocrinology, Diabetes & Metabolism
2540 23RD ST, 2ND FLOOR, ROOM 2110
San Francisco, CA 94143
  • Reassigned Medicare billing, California enrollment
  • 637 clinicians in this Medicare group
NPI 1265407381 (415) 514-9031

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 10

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.

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.
175 services163 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.
171 services171 patients
Exam to assess movement of vocal cord flaps using an endoscope 31579
This procedure involves using a thin, flexible tube called an endoscope to view your vocal cords. The endoscope is gently inserted through your nose or mouth to observe the movement of your vocal cords. This helps identify any abnormalities or issues.
112 services97 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.
109 services100 patients
Diagnostic exam of voice box using a flexible endoscope 31575
This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.
105 services91 patients
Evaluation and recording of swallowing using an endoscope 92612
This procedure, known as endoscopic evaluation of swallowing, involves using a thin, flexible tube with a camera (endoscope) to view your throat and evaluate your swallowing. It helps identify any issues that may be causing difficulty in swallowing.
72 services72 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94538 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
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.

Other Providers at the Same Location NPPES 10

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

HELEN MAN YING WONG-SEXTON M.D.
Internal Medicine
3200 KEARNEY ST.
FREMONT, CA 94538
Alameda County (510) 490-1222
ELIZABETH JOKERST M.D.
Family Medicine
3200 KEARNEY ST.
FREMONT, CA 94538
Alameda County (510) 490-1222
ANN MARIE MALLAT MD
Anesthesiology
3200 KEARNEY ST.
FREMONT, CA 94538
Alameda County (510) 490-1222
TALIVA DONLEY MARTIN M.D.
Ophthalmology
3200 KEARNEY ST.
FREMONT, CA 94538
Alameda County (510) 490-1222
BRIAN KAORU NAGAI M.D.
Radiology (Diagnostic Radiology)
3200 KEARNEY ST.
FREMONT, CA 94538
Alameda County (510) 490-1222
DAVID MCNAMARA LEWIS M.D.
Anesthesiology
3200 KEARNEY ST.
FREMONT, CA 94538
Alameda County (510) 490-1222
DR. JONATHAN WONG MD
Pediatrics
3200 KEARNEY ST.
FREMONT, CA 94538
Alameda County (510) 490-1222
KRISTINA PHILPOTT M.D.
Allergy & Immunology
3200 KEARNEY ST.
FREMONT, CA 94538
Alameda County (510) 490-1222

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 Sean Wang's NPI number?

The NPI number for Sean Wang is 1225295033. It was assigned to this individual provider in the NPPES registry on May 20, 2008.

Where is Sean Wang located?

Sean Wang practices at 3200 Kearney St., Fremont, CA 94538. The listed phone number is (510) 490-1222.

What is Sean Wang's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Sean Wang enrolled in Medicare?

Yes. Sean Wang 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.

Which organizations bill Medicare for Sean Wang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Sean Wang reassigns Medicare benefits to 2 organizations: Sutter Bay Medical Foundation (Fremont, CA) and University Of California Sfgh Medical Group (San Francisco, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sean Wang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Sean Wang was last updated on May 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.