Quick answers
- Does Clarence W. Brown accept Medicare assignment?
- Yes. Medicare's clinician data says Clarence W. Brown 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 Clarence W. Brown see?
- In 2024, CMS data shows 661 Original Medicare patients and 2,164 services for Clarence W. Brown. This counts Original Medicare only and measures volume, not quality.
- What is Clarence W. Brown's NPI number?
- 1386654390. 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 Clarence W. Brown, 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 | 661 |
|---|---|
| Services billed to Medicare | 2,164 |
| Different services or procedures | 70 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, 1-5 tissue blocks (17311)440 services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)229 services
- Complicated repair of wound of forehead, cheeks, chin, mouth, neck, underarms, genitals, hands, or feet, 2.6-7.5 cm (13132)179 services
- Destruction of precancer skin growth, 2-14 growths (17003)169 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)119 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 cholesterol63%
- High blood pressure62%
- Arthritis37%
- Chronic kidney disease30%
- Diabetes21%
- Ischemic heart disease21%
Hospitals where Clarence W. Brown works
Medicare's Facility Affiliation Data lists Clarence W. Brown 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
Practice locations
Addresses where Clarence W. Brown is enrolled with Medicare (CMS data updated October 2, 2026).
- 3111 Gundersen DrOnalaska, WI 54650 (608) 782‑7300
Group practices
Medicare enrollment lists Clarence W. Brown as a member of this group (CMS data updated October 2, 2026).
- Gundersen Lutheran Medical Center Inc895 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Onalaska
Clinicians with the same Medicare primary specialty in Onalaska, 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 Pittsburgh School Of Medicine |
| Graduation year | 1995 (31 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386654390 |
| 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