Quick answers
- Does Rachel M. Gruenberg accept Medicare assignment?
- Yes. Medicare's clinician data says Rachel M. Gruenberg 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 Rachel M. Gruenberg see?
- In 2024, CMS data shows 189 Original Medicare patients and 3,367 services for Rachel M. Gruenberg. This counts Original Medicare only and measures volume, not quality.
- What is Rachel M. Gruenberg's NPI number?
- 1821472531. 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 Rachel M. Gruenberg, 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 | 189 |
|---|---|
| Services billed to Medicare | 3,367 |
| Different services or procedures | 123 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Insertion of needle into vein for collection of blood sample (36415)292 services
- Blood test, comprehensive group of blood chemicals (80053)206 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)198 services
- Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)193 services
- Blood test, lipids (cholesterol and triglycerides) (80061)153 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 blood pressure75%
- High cholesterol75%
- Arthritis43%
- Diabetes32%
- Anxiety21%
- Depression20%
Hospitals where Rachel M. Gruenberg works
Medicare's Facility Affiliation Data lists Rachel M. Gruenberg 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.
- Sanford Medical Center BismarckBismarck, ND · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 350015
- Trinity HospitalsMinot, ND · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 350006
Practice locations
Addresses where Rachel M. Gruenberg is enrolled with Medicare (CMS data updated October 2, 2026).
- 2111 Landmark Cir NWMinot, ND 58703 (701) 858‑1800
- 3318 N 14th StBismarck, ND 58503 (701) 323‑8300
Group practices
Medicare enrollment lists Rachel M. Gruenberg as a member of these groups (CMS data updated October 2, 2026).
- Sanford Bismarck556 clinicians in the group
- St Alexius Medical Center238 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Minot
Clinicians with the same Medicare primary specialty in Minot, 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 | NP |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821472531 |
| 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