Quick answers
- Does Nathan H. Mustain accept Medicare assignment?
- Yes. Medicare's clinician data says Nathan H. Mustain 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 Nathan H. Mustain see?
- In 2024, CMS data shows 376 Original Medicare patients and 1,201 services for Nathan H. Mustain. This counts Original Medicare only and measures volume, not quality.
- What is Nathan H. Mustain's NPI number?
- 1285078741. 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 Nathan H. Mustain, 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 | 376 |
|---|---|
| Services billed to Medicare | 1,201 |
| Different services or procedures | 62 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)211 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)131 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)110 services
- Administration of influenza virus vaccine (G0008)69 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)62 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 pressure70%
- High cholesterol70%
- Diabetes38%
- Arthritis33%
- Chronic kidney disease32%
- Ischemic heart disease29%
Hospitals where Nathan H. Mustain works
Medicare's Facility Affiliation Data lists Nathan H. Mustain 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.
- Gundersen Lutheran Medical CenterLa Crosse, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520087
- SSM Health St Clare Hospital - BarabooBaraboo, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520057
Practice locations
Addresses where Nathan H. Mustain is enrolled with Medicare (CMS data updated October 2, 2026).
- 1836 S AveLa Crosse, WI 54601 (608) 783‑7300
- 500 N Holmen Dr, Suite 502Holmen, WI 54636 (608) 782‑7300
Group practices
Medicare enrollment lists Nathan H. Mustain as a member of these groups (CMS data updated October 2, 2026).
- Gundersen Lutheran Medical Center Inc895 clinicians in the group
- Gundersen Clinic Ltd418 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in La Crosse
Clinicians with the same Medicare primary specialty in La Crosse, WI — not a recommendation.
Other clinicians in Gundersen Lutheran Medical Center Inc
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 | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285078741 |
| 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