Katharine Marie Greenfield, M.D.
NPI 1588026025ActiveIndividual· Family Medicine· Sun Prairie, WI
Family Medicine (M.D.) in Sun Prairie, Wisconsin, trained at University of Wisconsin School of Medicine (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $289,533 for 2,455 claims, against $18,067 paid for services in 2024.
Overview
| NPI | 1588026025 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 23, 2016 |
| Last updated in NPPES | Jan 14, 2021 |
| Certified by provider | Jan 14, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 68311-20 | WI |
| Family Medicine | 207Q00000X | 141982 | AK |
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 | 86 |
|---|---|
| Services billed | 666 across 47 procedure codes |
| Paid by Medicare | $18,067 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,455 · 4,976 30-day fills |
|---|---|
| Patients | 177 |
| Total drug cost | $289,533 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- University of Wisconsin Medical Foundation IncMadison, WI · 2,553 clinicians
Hospital affiliation
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 26 family medicine physicians in Sun Prairie · All family medicine physicians in Wisconsin