Quick answers
- Does Randall J. Zimmerman accept Medicare assignment?
- Yes. Medicare's clinician data says Randall J. Zimmerman 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 Randall J. Zimmerman see?
- In 2024, CMS data shows 87 Original Medicare patients and 172 services for Randall J. Zimmerman. This counts Original Medicare only and measures volume, not quality.
- What is Randall J. Zimmerman's NPI number?
- 1821005638. 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 Randall J. Zimmerman, 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 | 87 |
|---|---|
| Services billed to Medicare | 172 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 77 |
Most frequent services
- Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)66 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)28 services
- Hospital discharge day management, 30 minutes or less (99238)15 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)11 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%
- Diabetes68%
- Chronic kidney disease51%
- Arthritis40%
- Ischemic heart disease40%
Hospitals where Randall J. Zimmerman works
Medicare's Facility Affiliation Data lists Randall J. Zimmerman 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.
- CentraCare - Paynesville HospitalPaynesville, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241349
- CentraCare - St. Cloud HospitalSaint Cloud, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240036
Practice locations
Addresses where Randall J. Zimmerman is enrolled with Medicare (CMS data updated October 2, 2026).
- 1555 Northway Dr, 100 Centra Care Clinic Northway FamilySt Cloud, MN 56303 (320) 251‑1775
- 200 W 1st StPaynesville, MN 56362 (320) 243‑3767
Group practices
Medicare enrollment lists Randall J. Zimmerman as a member of these groups (CMS data updated October 2, 2026).
- CentraCare Clinic791 clinicians in the group
- CentraCare Health-Paynesville LLC58 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in St Cloud
Clinicians with the same Medicare primary specialty in St Cloud, MN — not a recommendation.
Other clinicians in CentraCare Clinic
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 1992 (34 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1821005638 |
| 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