Quick answers
- Which hospitals does Michael W. Grevengoed work at?
- Medicare's official clinician data lists Michael W. Grevengoed at 2 hospitals: Hegg Memorial Health Center and Sanford Sheldon Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael W. Grevengoed see patients?
- Medicare's clinician data lists 4 practice locations, including Rock Valley, IA, Lake Park, IA and Canton, SD. Call before your visit to confirm the address.
- What is Michael W. Grevengoed's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Michael W. Grevengoed accept Medicare assignment?
- Yes. Medicare's clinician data says Michael W. Grevengoed 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 Michael W. Grevengoed?
- (712) 476-8000, as listed in official Medicare / NPI Registry data.
- What is Michael W. Grevengoed's NPI number?
- 1356837579. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael W. Grevengoed works
Medicare's Facility Affiliation Data lists Michael W. Grevengoed at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hegg Memorial Health CenterRock Valley, IA · Critical Access Hospital · CCN 161336
- Sanford Sheldon Medical CenterSheldon, IA · Critical Access Hospital · CCN 161381
Practice locations
Addresses where Michael W. Grevengoed is enrolled with Medicare (CMS data updated 2026-10-02).
- 1202 21st AveRock Valley, IA 51247 (712) 476‑8000
- 215 N Market St, Suite 2Lake Park, IA 51347 (712) 324‑6282
- 400 N Hiawatha DrCanton, SD 57013 (605) 987‑4378
- 800 Oak StSheldon, IA 51201 (712) 324‑5356
Group practices
Medicare enrollment lists Michael W. Grevengoed as a member of these groups (CMS data updated 2026-10-02).
- Sanford Health Network351 clinicians in the group
- Hegg Memorial Hospital45 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Rock Valley
Clinicians with the same Medicare primary specialty in Rock Valley, IA — not a recommendation.
Clinician information
| Graduation year | 2018 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356837579 |
| 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