Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. John Wang, MD

Individual provider Internal Medicine Physician · NPI 1659639607

Dr. John Wang, MD practises Internal Medicine in Austin, Texas. Graduated from Tulane University School of Medicine in 2012, 14 years ago. Practices with The Austin Diagnostic Clinic PLLC, a 87-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California and Texas.

Years since qualifying
14
Trained at
Tulane University School of Medicine
Licensed in
CA, TX
In the registry since
2012
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

12221 N Mopac Expy
Austin, TX 78758
Phone: (512) 901-4009
Fax: (512) 901-3909
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence R7139 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence 142039 (CA)

Record details

NPI number1659639607
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 27, 2012
Last updated in NPPESNovember 14, 2023
Certification dateNovember 14, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolTULANE UNIVERSITY SCHOOL OF MEDICINE
Graduated 2012 (14 years in practice)
Group practice The Austin Diagnostic Clinic Pllc — 87 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients494
Services billed 8,559 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $812 38 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • St David'S Medical Center Hospital · Austin, TX
  • St David'S South Austin Medical Center Hospital · Austin, TX
  • Capitol Home Health Home health agency · Austin, TX · listed as Capitol Home Health, Inc
  • Halcyon Home Llc Home health agency · Austin, TX · listed as Halcyon Home, LLC
  • Vibra Hospital of Lake Travis LLC Inpatient rehabilitation facility · Lakeway, TX
  • North Austin Medical Center Hospital · Austin, TX
  • Round Rock Medical Center Hospital · Round Rock, TX
  • Accentcare Home Health Of Texas Home health agency · Austin, TX
  • Enhabit Home Health Home health agency · San Antonio, TX
  • St. David'S Healthcare At Home Home health agency · Austin, TX

Colleagues at The Austin Diagnostic Clinic PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 87 clinicians in the practice; 12 are shown here.

Other providers in Austin