Timothy L. Walker, M.D.
NPI 1275530644ActiveIndividual· Orthopaedic Surgery· Tea, SD
Orthopaedic Surgery (M.D.) in Tea, South Dakota, trained at Indiana Medical College, School of Medicine of Purdue University (class of 1998). 669 Medicare patients in 2024, $325,367 paid; nearly all of their 1,857 Part D prescriptions were generic (99%). Stryker Corporation was the largest of 3 companies reporting payments in 2025, $304.14 in all, mostly food and beverage.
Overview
| NPI | 1275530644 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 30, 2005 |
| Last updated in NPPES | Apr 22, 2026 |
| Certified by provider | Apr 22, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 5456 | SD |
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 - Orthopedic Surgery (IA); Practitioner - Orthopedic Surgery (MN); Practitioner - Orthopedic Surgery (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 669 |
|---|---|
| Services billed | 7,221 across 95 procedure codes |
| Paid by Medicare | $325,367 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,857 · 1,874 30-day fills |
|---|---|
| Patients | 556 |
| Total drug cost | $9,640 |
| Generic share | 99% of claims |
Education and affiliations
| Medical school | Indiana Medical College, School of Medicine of Purdue University |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Orthopedic Institute PCYankton, SD · 57 clinicians
Hospital affiliations
- Avera McKennan Hospital & University Health CenterSioux Falls, SD
- Avera Sacred Heart HospitalYankton, SD
- Hendricks Community HospitalHendricks, MN
- Sanford Usd Medical CenterSioux Falls, SD
- Sioux Falls Specialty HospitalSioux Falls, SD
Industry payments (Open Payments)
- 2025$304.14 · 3 payments from 3 companies
- 2024$110.05 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $145.06 | 1 |
| Zimmer Biomet Holdings, Inc. | $139.53 | 1 |
| Vertex Pharmaceuticals Incorporated | $19.55 | 1 |
What the 2025 payments were for
- Food and Beverage$304.14 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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