Quick answers
- Which hospitals does Jeffrey Maddock work at?
- Medicare's official clinician data lists Jeffrey Maddock at 5 hospitals: CHI St Alexius Health, Garrison Memorial Hospital, Sakakawea Medical Center - CAH, SMP Health St Aloisius and Southwest Healthcare Services. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jeffrey Maddock see patients?
- Medicare's clinician data lists 2 practice locations, including Mandan, ND and Bismarck, ND. Call before your visit to confirm the address.
- What is Jeffrey Maddock's specialty?
- Medicare lists Interventional Radiology as the primary specialty.
- Does Jeffrey Maddock accept Medicare assignment?
- Yes. Medicare's clinician data says Jeffrey Maddock 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 Jeffrey Maddock?
- (800) 243-3839, as listed in official Medicare / NPI Registry data.
- What is Jeffrey Maddock's NPI number?
- 1922450790. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jeffrey Maddock works
Medicare's Facility Affiliation Data lists Jeffrey Maddock 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
- Sakakawea Medical Center - CAHHazen, ND · Critical Access Hospital · CCN 351310
- SMP Health St AloisiusHarvey, ND · Critical Access Hospital · CCN 351327
- Southwest Healthcare ServicesBowman, ND · Critical Access Hospital · CCN 351313
Practice locations
Addresses where Jeffrey Maddock is enrolled with Medicare (CMS data updated 2026-10-02).
- 3215 Bay Shore Bnd SEMandan, ND 58554 (800) 243‑3839
- 900 E Broadway AveBismarck, ND 58501 (701) 530‑7000
Group practices
Medicare enrollment lists Jeffrey Maddock as a member of these groups (CMS data updated 2026-10-02).
- St Alexius Medical Center238 clinicians in the group
- Sunshine Radiology Contracting LLC17 clinicians in the group
- Bismarck Radiology Associates PC4 clinicians in the group
Specialties
- Interventional Radiologyprimary
Find other Interventional Radiology doctors in North Dakota →
Other interventional radiologists in North Dakota
Clinicians with the same Medicare primary specialty in North Dakota — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of North Dakota School Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922450790 |
| 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