Jeffrey D. Tiemstra, M.D.
NPI 1336252238ActiveIndividual· Family Medicine· Elkhorn, WI
Family Medicine (M.D.) in Elkhorn, Wisconsin, trained at Rush Medical College of Rush University (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $139,291 for 2,313 claims, against $21,509 paid for services in 2024.
Overview
| NPI | 1336252238 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 16, 2006 |
| Last updated in NPPES | Aug 7, 2023 |
| Certified by provider | Aug 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 64749 | WI |
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 - Family Practice (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 79 |
|---|---|
| Services billed | 494 across 36 procedure codes |
| Paid by Medicare | $21,509 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,313 · 4,926 30-day fills |
|---|---|
| Patients | 223 |
| Total drug cost | $139,291 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | Rush Medical College of Rush University |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Family Practice |
Medical group
- Aurora Medical Group, Inc.Milwaukee, WI · 3,813 clinicians
Hospital affiliations
- Aurora Medical Center KenoshaKenosha, WI
- Aurora Memorial Hospital BurlingtonBurlington, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 21 family medicine physicians in Elkhorn · All family medicine physicians in Wisconsin