Quick answers
- Which hospitals does Matthew M. Iwamoto work at?
- Medicare's official clinician data lists Matthew M. Iwamoto at 5 hospitals: CHI St Alexius Health, Garrison Memorial Hospital, McKenzie County Healthcare Systems Inc, Sanford Medical Center Bismarck and SMP Health St Aloisius. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Matthew M. Iwamoto see patients?
- Medicare's clinician data lists 4 practice locations, including Bismarck, ND. Call before your visit to confirm the address.
- What is Matthew M. Iwamoto's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Matthew M. Iwamoto accept Medicare assignment?
- Yes. Medicare's clinician data says Matthew M. Iwamoto 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 M. Iwamoto?
- (701) 323-5222, as listed in official Medicare / NPI Registry data.
- What is Matthew M. Iwamoto's NPI number?
- 1073547014. 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 M. Iwamoto works
Medicare's Facility Affiliation Data lists Matthew M. Iwamoto at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- CHI St Alexius HealthBismarck, ND · Acute Care Hospital · CCN 350002
- Garrison Memorial HospitalGarrison, ND · Critical Access Hospital · CCN 351303
- McKenzie County Healthcare Systems IncWatford City, ND · Critical Access Hospital · CCN 351302
- Sanford Medical Center BismarckBismarck, ND · Acute Care Hospital · CCN 350015
- SMP Health St AloisiusHarvey, ND · Critical Access Hospital · CCN 351327
Practice locations
Addresses where Matthew M. Iwamoto is enrolled with Medicare (CMS data updated 2026-10-02).
- 1833 E Bismarck Expressway, Sanford Health ChiropracticBismarck, ND 58501 (701) 323‑5222
- 222 N 7th StBismarck, ND 58501 (701) 323‑6000
- 3318 N 14th StBismarck, ND 58503 (701) 323‑8300
- 900 E Broadway AveBismarck, ND 58501 (701) 530‑7000
Group practices
Medicare enrollment lists Matthew M. Iwamoto as a member of these groups (CMS data updated 2026-10-02).
- Sanford Bismarck556 clinicians in the group
- St Alexius Medical Center238 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Bismarck
Clinicians with the same Medicare primary specialty in Bismarck, ND — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1073547014 |
| 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