Quick answers
- Does Rena M. Nordeng Zimmermann accept Medicare assignment?
- Yes. Medicare's clinician data says Rena M. Nordeng Zimmermann 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 Rena M. Nordeng Zimmermann see?
- In 2024, CMS data shows 229 Original Medicare patients and 4,092 services for Rena M. Nordeng Zimmermann. This counts Original Medicare only and measures volume, not quality.
- What is Rena M. Nordeng Zimmermann's NPI number?
- 1578758926. 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 Rena M. Nordeng Zimmermann, 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 | 229 |
|---|---|
| Services billed to Medicare | 4,092 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Injection, denosumab, 1 mg (J0897)1,380 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)246 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)124 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)83 services
- Administration of influenza virus vaccine (G0008)51 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 cholesterol75%
- High blood pressure57%
- Arthritis32%
- Diabetes20%
- Anxiety18%
- Ischemic heart disease17%
Hospitals where Rena M. Nordeng Zimmermann works
Medicare's Facility Affiliation Data lists Rena M. Nordeng Zimmermann 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.
- CHI St Alexius Health DickinsonDickinson, ND · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 351336
- McKenzie County Healthcare Systems IncWatford City, ND · Critical Access Hospital · Emergency services: listed by Medicare · CCN 351302
- Sanford Medical Center BismarckBismarck, ND · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 350015
Practice locations
Addresses where Rena M. Nordeng Zimmermann is enrolled with Medicare (CMS data updated October 2, 2026).
- 2615 Fairway StDickinson, ND 58601 (701) 456‑6000
- 3318 N 14th StBismarck, ND 58503 (701) 323‑8300
- 683 State AveDickinson, ND 58601 (701) 483‑9400
Group practices
Medicare enrollment lists Rena M. Nordeng Zimmermann as a member of these groups (CMS data updated October 2, 2026).
- Sanford Bismarck556 clinicians in the group
- Omaha Therapy Inc65 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Dickinson
Clinicians with the same Medicare primary specialty in Dickinson, ND — not a recommendation.
Other clinicians in Sanford Bismarck
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of North Dakota School Of Medicine |
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1578758926 |
| 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