1. Home
  2. Directory
  3. California
  4. Mountain View
  5. Internal Medicine
  6. NPI Profile

YU-XUAN DANG M.D.
NPI 1225415631
Internal Medicine in Mountain View, CA

Active since May 05, 2015PECOS EnrolledAccepts Medicare Assignment
2495 HOSPITAL DR, STE 650, MOUNTAIN VIEW, CA 94040(650) 988-8460(650) 988-8478 Get Directions Write a Review

NPPES record last updated: November 4, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 4, 2021, Sep 27, 2021, Mar 25, 2021 and 2 more (5 updates tracked since 2018).

About Yu-xuan Dang M.d. NPPES

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

YU-XUAN DANG M.D. (NPI 1225415631) is an individual internal medicine provider in Mountain View, California, licensed in California (A147312) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS and is a graduate of Clvlnd Clinic Lerner College Of Med Of Case Wstn Rsv University (2015).

NPPES Registry Identity

NPI1225415631
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameYU-XUAN DANGCredential: M.D.
Location Address2495 HOSPITAL DR, STE 650Mountain View, CA 94040-4187
Mailing Address2495 Hospital Dr Ste 650Mountain View, CA 94040-4187 · (650) 988-8460
Phone(650) 988-8460
Fax(650) 988-8478
Sole ProprietorYes
Medical School CMSClvlnd Clinic Lerner College Of Med Of Case Wstn Rsv UniversityGraduated 2015
Enumeration DateMay 5, 2015
Last NPPES UpdateNovember 4, 20215 updates tracked since enumeration
NPPES CertifiedNovember 4, 2021
✔ NPI 1225415631 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A147312
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2495 HOSPITAL DR, Mountain View, CA 94040
Open in Google Maps ↗

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

Yu-xuan Dang 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 ID4385998053
PECOS Enrollment IDI20181115000973
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

3

Medicare enrollment records show Yu-xuan Dang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Yxd Health Services
Same address
Internal Medicine
2495 HOSPITAL DR STE 650
Mountain View, CA 94040
  • Reassigned Medicare billing, California enrollment
NPI 1609469329 (408) 886-4899
Quantum Bay Area Hospitalist Medical Group Inc
0.1 mi
Hospitalist
2500 GRANT RD
Mountain View, CA 94040
  • Reassigned Medicare billing, California enrollment
  • 217 clinicians in this Medicare group
NPI 1902279656 (650) 940-7000
Sutter Bay Medical Foundation
6.6 mi
Multi-Specialty
795 EL CAMINO REAL
Palo Alto, CA 94301
  • Reassigned Medicare billing, California enrollment
  • 4,479 clinicians in this Medicare group
NPI 1013950807 (650) 321-4121

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 8

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.
587 services209 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
118 services118 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.
36 services36 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.
22 services22 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
19 services19 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.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94040 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
$156.67 typical visit price
range $70.37 – $206.04
Typical copayment $39.16 (range $17.59 – $51.51)
Most-billed visit code 99204
Established Patient
$121.77 typical visit price
range $23.96 – $169.60
Typical copayment $30.44 (range $5.99 – $42.40)
Most-billed visit code 99214
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

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

Power wheelchair, group 2 standard, captains chair, patient weight capacity up to and including 300 pounds K0823
DME-Wheelchairs · category DD009N
1 supplier11 claims11 services$130.46 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 4

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

KENNY K CHEN M.D.
Internal Medicine
2495 HOSPITAL DR, SUITE 650
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 988-8460
DR. XUANANH P TRAN MD
Obstetrics & Gynecology
2495 HOSPITAL DR, STE 505
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 960-1106
DR. AMANDA YEATON-MASSEY MD
Obstetrics & Gynecology (Maternal & Fetal Medicine)
2495 HOSPITAL DR
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 404-8210
SAYAKA TAGUCHI PA-C
Physician Assistant
2495 HOSPITAL DR
MOUNTAIN VIEW, CA 94040
Santa Clara County (650) 962-4370

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 Yu-xuan Dang's NPI number?

The NPI number for Yu-xuan Dang is 1225415631. It was assigned to this individual provider in the NPPES registry on May 5, 2015.

Where is Yu-xuan Dang located?

Yu-xuan Dang practices at 2495 Hospital Dr Ste 650, Mountain View, CA 94040. The listed phone number is (650) 988-8460.

What is Yu-xuan Dang's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Yu-xuan Dang enrolled in Medicare?

Yes. Yu-xuan Dang 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 Yu-xuan Dang's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Yu-xuan Dang reassigns Medicare benefits to 3 organizations: Yxd Health Services (Mountain View, CA), Quantum Bay Area Hospitalist Medical Group Inc (Mountain View, CA) and Sutter Bay Medical Foundation (Palo Alto, 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 Yu-xuan Dang'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 Yu-xuan Dang was last updated on November 4, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.