Quick answers
- Does Ngassa A. Mssika accept Medicare assignment?
- Yes. Medicare's clinician data says Ngassa A. Mssika accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Ngassa A. Mssika see?
- In 2024, CMS data shows 295 Original Medicare patients and 467 services for Ngassa A. Mssika. This counts Original Medicare only and measures volume, not quality.
- What is Ngassa A. Mssika's NPI number?
- 1932410461. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Ngassa A. Mssika, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 295 |
|---|---|
| Services billed to Medicare | 467 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Emergency department visit with moderate level of medical decision making (99284)202 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)176 services
- Emergency department visit with low level of medical decision making (99283)31 services
- Emergency department visit with high level of medical decision making (99285)23 services
- Critical care, first 30-74 minutes (99291)21 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol74%
- Arthritis56%
- Chronic kidney disease47%
- Ischemic heart disease43%
- Diabetes41%
Hospitals where Ngassa A. Mssika works
Medicare's Facility Affiliation Data lists Ngassa A. Mssika at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Aurora Medical Center Bay AreaMarinette, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520113
- Aurora Medical Center OshkoshOshkosh, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520198
- Marshfield Medical CenterMarshfield, WI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 520037
- Marshfield Medical Center - MinocquaMinocqua, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520212
- Marshfield Medical Center - Rice LakeRice Lake, WI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 520011
Practice locations
Addresses where Ngassa A. Mssika is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.
- 1000 N Oak AveMarshfield, WI 54449 (715) 387‑5511
- 1700 W Stout StRice Lake, WI 54868 (715) 236‑6133
- 4100 State Hwy 66Stevens Point, WI 54482 (715) 997‑6000
- 440 24th S, Suite 100Wisconsin Rapids, WI 54494 (715) 424‑8625
- 440 24th St SWisconsin Rapids, WI 54494 (715) 751‑6200
Group practices
Medicare enrollment lists Ngassa A. Mssika as a member of these groups (CMS data updated October 2, 2026).
- Aurora Medical Group, Inc.3,813 clinicians in the group
- MCHS Hospitals Inc1,197 clinicians in the group
- Lakeview Medical Center Inc of Rice Lake168 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Marshfield
Clinicians with the same Medicare primary specialty in Marshfield, WI — not a recommendation.
Other clinicians in Aurora Medical Group, Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2020 (6 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1932410461 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians