Marian Greenburg, MD
NPI 1720198872ActiveIndividual· Internal Medicine· Marshfield, WI
Internal Medicine (MD) in Marshfield, Wisconsin, trained at Yale University School of Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $337,409 for 4,541 claims, against $10,076 paid for services in 2024.
Overview
| NPI | 1720198872 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 30, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 47376 | 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 - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 106 |
|---|---|
| Services billed | 167 across 14 procedure codes |
| Paid by Medicare | $10,076 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,541 · 10,308 30-day fills |
|---|---|
| Patients | 562 |
| Total drug cost | $337,409 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Internal Medicine |
Medical group
- McHs Hospitals IncMarshfield, WI · 1,197 clinicians
Hospital affiliations
- Marshfield Medical CenterMarshfield, WI
- Marshfield Medical Center - NeillsvilleNeillsville, WI
Other facilities
- Compassus Home HealthHome health agency · Marshfield, 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 66 internal medicine physicians in Marshfield · All internal medicine physicians in Wisconsin