Michael Joseph Willenborg, M.D.
NPI 1447364658ActiveIndividual· Orthopaedic Surgery· Flower Mound, TX
Orthopaedic Surgery (M.D.) in Flower Mound, Texas, trained at University of Texas Medical School at Houston (class of 1997). 451 Medicare patients in 2024, $101,772 paid; nearly all of their 186 Part D prescriptions were generic (99%). Depuy Synthes Sales Inc. was the largest of 2 companies reporting payments in 2025, $109.13 in all, mostly food and beverage.
Overview
| NPI | 1447364658 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 18, 2006 |
| Last updated in NPPES | Jul 26, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | L3525 | TX |
| Orthopaedic Surgery, Foot and Ankle Surgery | 207XX0004X | L3525 | TX |
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 - Orthopedic Surgery (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 451 |
|---|---|
| Services billed | 1,750 across 80 procedure codes |
| Paid by Medicare | $101,772 |
Part D prescriptions in 2024
| Prescriptions (claims) | 186 · 188 30-day fills |
|---|---|
| Patients | 100 |
| Total drug cost | $1,702 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at Houston |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Orthopedic Surgery |
Medical groups
- Healthtexas Provider NetworkWaxahachie, TX · 2,697 clinicians
- Orthopedic Associates of Flower Mound PLLCNorthlake, TX · 17 clinicians
Hospital affiliations
- Dallas Regional Medical CenterMesquite, TX
- Medical City LewisvilleLewisville, TX
- Texas Health Presbyterian Hospital Flower MoundFlower Mound, TX
Industry payments (Open Payments)
- 2025$109.13 · 4 payments from 2 companies
- 2024$282.35 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Depuy Synthes Sales Inc. | $92.23 | 3 |
| Ossur Americas, Inc. | $16.90 | 1 |
What the 2025 payments were for
- Food and Beverage$109.13 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 27 orthopedic surgeons in Flower Mound · All orthopedic surgeons in Texas