Randall Zimmerman, M.D.
NPI 1821005638 · Family Medicine Physician · Paynesville, MN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Randall Zimmerman, M.D. is a Family Medicine Physician provider in Paynesville, MN (NPI 1821005638).
Provider details
- NPI number
- 1821005638
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MN36448 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
120 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 66 | $8 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 28 | $8 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 15 | $77 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 11 | $123 |
Typical Medicare-allowed amounts for these services range $8–$123 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 131 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 527 | 140 |
| Amlodipine Besylate | 424 | 108 |
| Lisinopril | 381 | 94 |
| Rosuvastatin Calcium | 372 | 110 |
| Furosemide | 333 | 90 |
| Levothyroxine Sodium | 299 | 74 |
| Atorvastatin Calcium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-02
- Last updated
- 2023-03-27
- Certified
- 2023-03-27
Frequently asked questions
- What is Randall Zimmerman's NPI number?
- Randall Zimmerman's National Provider Identifier (NPI) is 1821005638, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Randall Zimmerman's specialty?
- Randall Zimmerman is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Randall Zimmerman located?
- Randall Zimmerman's practice location on file with NPPES is 200 W 1st St, Paynesville, MN 56362-1445.
- What is Randall Zimmerman's phone number?
- The practice phone number listed in the NPPES registry for Randall Zimmerman is (320) 243-3779.
- Does Randall Zimmerman accept Medicare?
- Randall Zimmerman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Randall Zimmerman's NPI active?
- Yes — Randall Zimmerman's NPI (1821005638) is active in the NPPES registry as of the last update on 2023-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.