Quick answers
- Does Aaron D. Christians accept Medicare assignment?
- Yes. Medicare's clinician data says Aaron D. Christians 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 Aaron D. Christians see?
- In 2024, CMS data shows 236 Original Medicare patients and 572 services for Aaron D. Christians. This counts Original Medicare only and measures volume, not quality.
- What is Aaron D. Christians's NPI number?
- 1376077578. 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 Aaron D. Christians, 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 | 236 |
|---|---|
| Services billed to Medicare | 572 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)260 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)88 services
- Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)66 services
- Hospital discharge day management, more than 30 minutes (99239)59 services
- Hospital discharge day management, 30 minutes or less (99238)42 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%
- Chronic kidney disease52%
- Diabetes47%
- Heart failure47%
- Arthritis42%
Hospitals where Aaron D. Christians works
Medicare's Facility Affiliation Data lists Aaron D. Christians 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 Boscobel Area Hospital and ClinicsBoscobel, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521344
- Gundersen Lutheran Medical CenterLa Crosse, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520087
- Gundersen St Josephs Hospital and ClinicsHillsboro, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521304
- Gundersen Tri-County Hospital & ClinicsWhitehall, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521316
- Vernon Memorial HospitalViroqua, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521348
Practice locations
Addresses where Aaron D. Christians is enrolled with Medicare (CMS data updated October 2, 2026).
- 1836 S AveLa Crosse, WI 54601 (608) 783‑7300
- 3111 Gundersen DrOnalaska, WI 54650 (608) 782‑7300
Group practices
Medicare enrollment lists Aaron D. Christians as a member of this group (CMS data updated October 2, 2026).
- Gundersen Lutheran Medical Center Inc895 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine 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 | DO |
|---|---|
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376077578 |
| 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