Quick answers
- Which hospitals does Matthew Cossack work at?
- Medicare's official clinician data lists Matthew Cossack at 2 hospitals: Amery Hospital & Clinic and Regions Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew Cossack see patients?
- Medicare's clinician data lists 6 practice locations, including Amery, WI, Saint Paul, MN and Bloomington, MN. Call before your visit to confirm the address.
- What is Matthew Cossack's specialty?
- Medicare lists Ophthalmology as the primary specialty.
- Does Matthew Cossack accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew Cossack accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Matthew Cossack?
- (715) 268-8000, as listed in official Medicare / NPI Registry data.
- What is Matthew Cossack's NPI number?
- 1275948275. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Matthew Cossack works
Medicare's Facility Affiliation Data lists Matthew Cossack at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Amery Hospital & ClinicAmery, WI · Critical Access Hospital · CCN 521308
- Regions HospitalSaint Paul, MN · Acute Care Hospital · CCN 240106
Practice locations
Addresses where Matthew Cossack is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 265 Griffin E StAmery, WI 54001 (715) 268‑8000
- 265 Griffin St EAmery, WI 54001 (715) 268‑8000
- 401 Phalen BlvdSaint Paul, MN 55130 (651) 254‑7400
- 435 Phalen BlvdSaint Paul, MN 55130
- 640 Jackson StSaint Paul, MN 55101
Group practices
Medicare enrollment lists Matthew Cossack as a member of these groups (CMS data updated 2026-10-02).
- Group Health Inc1,638 clinicians in the group
- Amery Regional Medical Center Inc124 clinicians in the group
Specialties
- Ophthalmologyprimary
Other ophthalmologists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Medical school | Creighton University School Of Medicine |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275948275 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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