Ngassa A. Mssika, DO
NPI 1932410461ActiveIndividual· Emergency Medicine· Oshkosh, WI
Emergency Medicine (DO) with Aurora Medical Group, Inc. and 2 other groups, practicing in Oshkosh, Wisconsin. 295 Medicare patients in 2024, $25,448 paid; nearly all of their 368 Part D prescriptions were generic (97%). Amgen Inc. reported $85.93 in payments in 2024, mostly food and beverage. Lists Aurora Medical Center Bay Area and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1932410461 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 30, 2010 |
| Last updated in NPPES | Jan 8, 2026 |
| Certified by provider | Jan 8, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 81255 | 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 - Emergency Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 295 |
|---|---|
| Services billed | 467 across 17 procedure codes |
| Paid by Medicare | $25,448 |
Part D prescriptions in 2024
| Prescriptions (claims) | 368 · 385 30-day fills |
|---|---|
| Patients | 251 |
| Total drug cost | $4,710 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Emergency Medicine |
Medical groups
- Aurora Medical Group, Inc.Milwaukee, WI · 3,813 clinicians
- McHs Hospitals IncMarshfield, WI · 1,197 clinicians
- Lakeview Medical Center Inc of Rice LakeRice Lake, WI · 168 clinicians
Hospital affiliations
- Aurora Medical Center Bay AreaMarinette, WI
- Aurora Medical Ctr OshkoshOshkosh, WI
- Marshfield Medical CenterMarshfield, WI
- Marshfield Medical Center - MinocquaMinocqua, WI
- Marshfield Medical Center - Rice LakeRice Lake, WI
Industry payments (Open Payments)
- 2024$85.93 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $85.93 | 1 |
What the 2024 payments were for
- Food and Beverage$85.93 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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