Quick answers
- Does Charles A. Mateskon accept Medicare assignment?
- Yes. Medicare's clinician data says Charles A. Mateskon 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 Charles A. Mateskon see?
- In 2024, CMS data shows 33 Original Medicare patients and 136 services for Charles A. Mateskon. This counts Original Medicare only and measures volume, not quality.
- What is Charles A. Mateskon's NPI number?
- 1639279763. 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 Charles A. Mateskon, 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 | 33 |
|---|---|
| Services billed to Medicare | 136 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
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).
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)75%
- High cholesterol73%
- High blood pressure67%
- Arthritis45%
Hospitals where Charles A. Mateskon works
Medicare's Facility Affiliation Data lists Charles A. Mateskon 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.
- Marshfield Medical Center - Eau ClaireEau Claire, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520210
- Marshfield Medical Center - Rice LakeRice Lake, WI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 520011
- Range Regional Health ServicesHibbing, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 240040
- SSM Health St Clare Hospital - BarabooBaraboo, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520057
- SSM Health St Mary's Hospital - JanesvilleJanesville, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520208
Practice locations
Addresses where Charles A. Mateskon is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1000 N Oak AveMarshfield, WI 54449 (715) 387‑5511
- 1700 W Stout StRice Lake, WI 54868 (715) 236‑6133
- 1700 W Stout St, Suite 400Rice Lake, WI 54868 (715) 236‑6133
- 2310 Craig RdEau Claire, WI 54701 (715) 858‑8100
- 3400 E Racine StJanesville, WI 53546 (608) 373‑8500
Group practices
Medicare enrollment lists Charles A. Mateskon as a member of these groups (CMS data updated October 2, 2026).
- MCHS Hospitals Inc1,197 clinicians in the group
- Range Regional Health Services353 clinicians in the group
- Lakeview Medical Center Inc of Rice Lake168 clinicians in the group
- Shared Magnetic Resonance Imaging Facility Inc10 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Marshfield
Clinicians with the same Medicare primary specialty in Marshfield, WI — not a recommendation.
Other clinicians in MCHS Hospitals Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1982 (44 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1639279763 |
| 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