William Muller, MD
NPI 1942228531 · Family Medicine Physician · Bemidji, MN
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Muller, MD is a Family Medicine Physician provider in Bemidji, MN (NPI 1942228531).
Provider details
- NPI number
- 1942228531
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 36372 (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
1,060 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 695 | $92 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 279 | $62 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 33 | $126 |
| Physician Or Allowed Practitioner Certification for Medicare-Covered Home Health Services Under a Home Health Plan of Care (patient Not Present), Including Contacts With Home Health Agency and Review of Reports of Patient Status Required By Physicians andG0180 | 20 | $52 |
| Transitional Care Management Services for Problem of at Least Moderate Complexity99495 | 19 | $134 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 202 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 1,284 | 294 |
| Losartan Potassium | 1,144 | 291 |
| Amlodipine Besylate | 804 | 198 |
| Lisinopril | 737 | 175 |
| Omeprazole | 729 | 186 |
| Levothyroxine Sodium | 616 | 120 |
| Metoprolol Succinate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-18
- Last updated
- 2022-03-29
- Certified
- 2022-03-29
Frequently asked questions
- What is William Muller's NPI number?
- William Muller's National Provider Identifier (NPI) is 1942228531, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Muller's specialty?
- William Muller is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Muller located?
- William Muller's practice location on file with NPPES is 1233 34th St Nw, Bemidji, MN 56601-5112.
- What is William Muller's phone number?
- The practice phone number listed in the NPPES registry for William Muller is (218) 333-5180.
- Does William Muller accept Medicare?
- William Muller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Muller's NPI active?
- Yes — William Muller's NPI (1942228531) is active in the NPPES registry as of the last update on 2022-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.