Diane M. Oppeneer, APNP
NPI 1831174143ActiveIndividual· Nurse Practitioner· Manitowoc, WI
Nurse Practitioner (APNP) with Froedtert Manitowoc Medical Group, LLC, practicing in Manitowoc, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $307,111 for 4,204 claims, against $14,170 paid for services in 2024. Lists Holy Family Memorial as a hospital affiliation.
Overview
| NPI | 1831174143 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APNP |
| Sole proprietor | No |
| NPI issued | Dec 8, 2005 |
| Last updated in NPPES | Oct 9, 2025 |
| Certified by provider | Oct 9, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 2302-033 | 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 - Nurse Practitioner (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 89 |
|---|---|
| Services billed | 245 across 14 procedure codes |
| Paid by Medicare | $14,170 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,204 · 6,114 30-day fills |
|---|---|
| Patients | 212 |
| Total drug cost | $307,111 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Froedtert Manitowoc Medical Group, LLCSheboygan, WI · 156 clinicians
Hospital affiliation
- Holy Family MemorialManitowoc, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other nurse practitioners in Manitowoc
- 1124702220
- 1437527389
- 1487037859
- 1518016310
- 1720658529
- 1790220044
- 1871541342
- 1891213401
- 1992563357
- 1003520255
- 1063809499
- 1083786859
All 36 nurse practitioners in Manitowoc · All nurse practitioners in Wisconsin