Quick answers
- Does Richard L. Rosseau accept Medicare assignment?
- Yes. Medicare's clinician data says Richard L. Rosseau 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 Richard L. Rosseau see?
- In 2024, CMS data shows 519 Original Medicare patients and 66,080 services for Richard L. Rosseau. This counts Original Medicare only and measures volume, not quality.
- What is Richard L. Rosseau's NPI number?
- 1265400253. 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 Richard L. Rosseau, 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 | 519 |
|---|---|
| Services billed to Medicare | 66,080 |
| Different services or procedures | 55 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Hyaluronan or derivative, gelsyn-3, for intra-articular injection, 0.1 mg (J7328)37,632 services
- Injection, methylprednisolone acetate, 1 mg (J1010)24,982 services
- Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg (J7318)1,440 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)607 services
- Aspiration and/or injection of fluid from large joint (20610)552 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 cholesterol75%
- High blood pressure71%
- Arthritis62%
- Diabetes29%
- Ischemic heart disease29%
- Chronic kidney disease25%
Practice locations
Addresses where Richard L. Rosseau is enrolled with Medicare (CMS data updated October 2, 2026).
- 430 Pennsylvania AveGlen Ellyn, IL 60137 (630) 469‑9200
Group practices
Medicare enrollment lists Richard L. Rosseau as a member of this group (CMS data updated October 2, 2026).
- Dupage Medical Group Ltd1,322 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Other clinicians in Dupage Medical Group Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | George Washington University School Of Medicine |
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265400253 |
| 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
- 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