NPPES file of Aug 9, 2026

Wei Xiang Wong

Nephrology Physician · Flagstaff, AZ

Wei Xiang Wong is a nephrology physician with a practice address in Flagstaff, Arizona, and NPI 1639551526, issued on Jun 26, 2015. Check the license (Arizona 56419, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639551526
Name
Wei Xiang Wong
Primary taxonomy
Nephrology Physician 207RN0300X
License number
56419 AZ
Self-reported in NPPES; status is on the state search
Practice location
617 N Humphreys St Ste 102, Flagstaff, AZ 86001
Phone
(480) 610-6100
Enumerated
Jun 26, 2015
Record last updated
Jul 21, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20200908000018); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 617 N Humphreys St Ste 102

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Wina Yousman, M.D.Internal Medicine Physician1275981458

Verify Wei Xiang Wong in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 56419
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Arizona license search

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46% more Medicare Part D claims than the average nephrology physician in 2024

2,136 Medicare Part D claims for 257 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.

  1. Wei Xiang Wong2,136
  2. Specialty average1,465

Most prescribed

  1. Furosemide151 claims
  2. Lisinopril149 claims
  3. Allopurinol112 claims
  4. Nifedipine Er87 claims
  5. Carvedilol80 claims
  6. Calcium Acetate79 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $253.96

11 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Wei Xiang Wong$253.96
  2. Specialty average$3,091.37

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

3 hospitals and group practices

  1. Dhhs Phs Naihs Chinle Comprehensive Health Care FacilityChinle, AZ
  2. Southwest Kidney Institute PLCFlagstaff, AZ
  3. Tuba City Regional Health Care CorporationTuba City, AZ · Acute Care Hospitals

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov).

Nephrology Physician providers in Arizona

There are 278 nephrology physician records in Arizona.

Other nephrology physician records in Arizona

  1. Abubakr Abdelaziz, M.DKingman, AZ1649617226
  2. Sohail Abdul Salim, MDPhoenix, AZ1457658007
  3. Manuel Abrante, M.D.Mesa, AZ1942293527
  4. Naief Abudaff, MDPhoenix, AZ1295229920
  5. Chirag Acharya, MDSun City, AZ1437512506
  6. Mohit AgarwalPhoenix, AZ1407061781
  7. Irfan Ahmed, MDChandler, AZ1750540498
  8. Jamil Ahmed, M.D.Tucson, AZ1588685879
  9. Kamal Eldin Ahmed, M.D.Yuma, AZ1952352411
  10. Sami Alasfar, M.D.Scottsdale, AZ1447489000

Common questions

What is Wei Xiang Wong's NPI number?

Wei Xiang Wong's National Provider Identifier (NPI) is 1639551526, issued on Jun 26, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Wei Xiang Wong located?

The NPPES record lists a practice address at 617 N Humphreys St Ste 102, Flagstaff, AZ, 86001. Phone: (480) 610-6100. Providers update this record themselves, so call before visiting.

How can I verify Wei Xiang Wong's license?

NPPES lists Arizona license number 56419, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Wei Xiang Wong prescribe under Medicare Part D?

In 2024, Wei Xiang Wong had 2,136 Medicare Part D claims for 257 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.