Wendy L. Mahone-Johnson, MD
NPI 1386828325ActiveIndividual· Internal Medicine, Medical Oncology· Plano, TX
Internal Medicine, Medical Oncology (MD) in Plano, Texas, trained at University of Texas Medical School at San Antonio (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $2,775,207 for 1,144 claims, against $1,142,536 paid for services in 2024. Incyte Corporation was the largest of 28 companies reporting payments in 2025, $1,759 in all, mostly food and beverage.
Overview
| NPI | 1386828325 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 27, 2007 |
| Last updated in NPPES | May 24, 2021 |
| Certified by provider | May 24, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | N8198 | TX |
| Internal Medicine, Hematology & Oncology | 207RH0003X | N8198 | TX |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 065562 | GA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Medical Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 310 |
|---|---|
| Services billed | 80,526 across 142 procedure codes |
| Paid by Medicare | $1,142,536 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,144 · 1,743 30-day fills |
|---|---|
| Patients | 164 |
| Total drug cost | $2,775,207 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Texas Oncology PAPlano, TX · 1,014 clinicians
Hospital affiliations
- Medical City PlanoPlano, TX
- Texas Health Presbyterian Hospital PlanoPlano, TX
Industry payments (Open Payments)
- 2025$1,759 · 74 payments from 28 companies
- 2024$1,770 · 85 payments from 31 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Incyte Corporation | $174.22 | 5 |
| Abbvie Inc. | $158.37 | 6 |
| Novartis Pharmaceuticals Corporation | $152.51 | 6 |
| Merck Sharp & Dohme LLC | $114.99 | 5 |
| Genzyme Corporation | $104.79 | 4 |
What the 2025 payments were for
- Food and Beverage$1,759 · 74 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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