Quick answers
- Does Matheau G. Eysser accept Medicare assignment?
- Yes. Medicare's clinician data says Matheau G. Eysser 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 Matheau G. Eysser see?
- In 2024, CMS data shows 271 Original Medicare patients and 1,732 services for Matheau G. Eysser. This counts Original Medicare only and measures volume, not quality.
- What is Matheau G. Eysser's NPI number?
- 1356629885. 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 Matheau G. Eysser, 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 | 271 |
|---|---|
| Services billed to Medicare | 1,732 |
| Different services or procedures | 56 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)448 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)205 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)150 services
- Aspiration and/or injection of fluid from large joint (20610)100 services
- X-ray of knee, 3 views (73562)90 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).
- Arthritis75%
- High blood pressure68%
- High cholesterol52%
- Diabetes27%
- Ischemic heart disease20%
- Anxiety19%
Hospitals where Matheau G. Eysser works
Medicare's Facility Affiliation Data lists Matheau G. Eysser 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.
- Madison Memorial HospitalRexburg, ID · Acute Care Hospital · Emergency services: listed by Medicare · CCN 130025
Practice locations
Addresses where Matheau G. Eysser is enrolled with Medicare (CMS data updated October 2, 2026).
- 393 E 2ndRexburg, ID 83440 (208) 359‑6498
- 450 E MainRexburg, ID 83440
Group practices
Medicare enrollment lists Matheau G. Eysser as a member of this group (CMS data updated October 2, 2026).
- Madison Co Memorial Hospital34 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Rexburg
Clinicians with the same Medicare primary specialty in Rexburg, ID — not a recommendation.
Other clinicians in Madison Co Memorial Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356629885 |
| 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