John Wang, M.D.
NPI 1659639607ActiveIndividual· Internal Medicine· Austin, TX
Internal Medicine (M.D.) in Austin, Texas, trained at Tulane University School of Medicine (class of 2012). Their prescriptions cost Medicare Part D more than their services did: $872,883 for 8,380 claims, against $201,130 paid for services in 2024. Exact Sciences Corporation was the largest of 18 companies reporting payments in 2025, $811.89 in all, mostly food and beverage.
Overview
| NPI | 1659639607 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 27, 2012 |
| Last updated in NPPES | Nov 14, 2023 |
| Certified by provider | Nov 14, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | R7139 | TX |
| Internal Medicine | 207R00000X | 142039 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 494 |
|---|---|
| Services billed | 8,559 across 108 procedure codes |
| Paid by Medicare | $201,130 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,380 · 21,974 30-day fills |
|---|---|
| Patients | 848 |
| Total drug cost | $872,883 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Tulane University School of Medicine |
|---|---|
| Graduation year | 2012 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Legacy Healthcare Services IncGreenville, SC · 3,223 clinicians
- The Austin Diagnostic Clinic PLLCCedar Park, TX · 86 clinicians
Hospital affiliations
- North Austin Medical CenterAustin, TX
- Round Rock Medical CenterRound Rock, TX
- St David's Medical CenterAustin, TX
- St David's South Austin Medical CenterAustin, TX
Other facilities
- Accentcare Home Health of TexasHome health agency · Austin, TX
- Capitol Home HealthHome health agency · Austin, TX
- Enhabit Home HealthHome health agency · San Antonio, TX
- Halcyon Home LLCHome health agency · Austin, TX
- St. David's Healthcare at HomeHome health agency · Austin, TX
- Baylor Scott & White Institute for RehabilitationInpatient rehabilitation facility · Lakeway, TX
Industry payments (Open Payments)
- 2025$811.89 · 38 payments from 18 companies
- 2024$548.92 · 28 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $111.01 | 5 |
| Novo Nordisk Inc | $110.51 | 5 |
| Pfizer Inc. | $105.01 | 4 |
| Astellas Pharma US Inc | $88.99 | 4 |
| Daiichi Sankyo Inc. | $82.53 | 4 |
What the 2025 payments were for
- Food and Beverage$811.89 · 38 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 735 internal medicine physicians in Austin · All internal medicine physicians in Texas