Dr. Timothy L. Walker, M.D.
Orthopedic Surgery (Orthopaedic Surgery Physician)
- Medicare participating
At a glance
- Medical school
- Indiana Medical College, School of Medicine of Purdue University (1998)
- Years since graduation
- 28
- In the NPI registry since
- 2005
- Medicare patients seen, 2024
- 669
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1998Medical school: Indiana Medical College, School of Medicine of Purdue University
- 2005Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Orthopaedic Surgery Physician primary
SD license 5456
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Avera Mckennan Hospital & University Health Center Sioux Falls, SD
- Sanford Usd Medical Center Sioux Falls, SD
- Avera Sacred Heart Hospital Yankton, SD
- Sioux Falls Specialty Hospital Sioux Falls, SD
- Hendricks Community Hospital Hendricks, MN
Medical groups
- Orthopedic Institute PC (57 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 669
- Services billed
- 7,221
- Patients’ average age
- 73
| Service | Times | Patients |
|---|---|---|
| Hyaluronan or derivative, synvisc or synvisc-one, for intra-articular injection, 1 mg | 2,304 | 39 |
| Injection, dexamethasone sodium phosphate, 1 mg | 1,084 | 76 |
| Established patient office or other outpatient visit, 30-39 minutes | 222 | 205 |
| X-ray of knee, 3 views | 221 | 177 |
| Established patient office or other outpatient visit, 20-29 minutes | 145 | 127 |
| X-ray of hip, 2-3 views | 142 | 125 |
| Aspiration and/or injection of fluid from large joint | 126 | 106 |
| X-ray of knee, 1-2 views | 108 | 92 |
| New patient office or other outpatient visit, 45-59 minutes | 104 | 104 |
| Replacement of knee joint, both sides of knee | 103 | 101 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Amoxicillin Other prescribers in Tea, SD | 467 |
| Tramadol Hcl Other prescribers in Tea, SD | 341 |
| Mupirocin Other prescribers in Tea, SD | 224 |
| Meloxicam Other prescribers in Tea, SD | 196 |
| Oxycodone Hcl Other prescribers in Tea, SD | 170 |
| Gabapentin Other prescribers in Tea, SD | 123 |
| Clindamycin Hcl Other prescribers in Tea, SD | 117 |
| Hydrocodone-Acetaminophen (hydrocodone/acetaminophen) Other prescribers in Tea, SD | 80 |
| Cephalexin Other prescribers in Tea, SD | 44 |
| Cyclobenzaprine Hcl Other prescribers in Tea, SD | 19 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Payments from drug and device companies
In 2025, 3 companies reported 3 payments worth $304 in total to this clinician.
| Stryker Corporation | $145 |
|---|---|
| Zimmer Biomet Holdings, Inc. | $140 |
| Vertex Pharmaceuticals Incorporated | $19.55 |
| Food and Beverage | $304 |
|---|
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.