Quick answers
- Does Ryan M. Siwiec accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan M. Siwiec 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 Ryan M. Siwiec see?
- In 2024, CMS data shows 216 Original Medicare patients and 2,937 services for Ryan M. Siwiec. This counts Original Medicare only and measures volume, not quality.
- What is Ryan M. Siwiec's NPI number?
- 1841429925. 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 Ryan M. Siwiec, 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 | 216 |
|---|---|
| Services billed to Medicare | 2,937 |
| Different services or procedures | 56 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Hyaluronan or derivative, trivisc, for intra-articular injection, 1 mg (J7329)1,351 services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)657 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)189 services
- Aspiration and/or injection of fluid from large joint (20610)174 services
- X-ray of knee, 4 or more views (73564)98 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 pressure73%
- High cholesterol70%
- Arthritis69%
- Ischemic heart disease29%
- Anxiety26%
- Diabetes20%
Hospitals where Ryan M. Siwiec works
Medicare's Facility Affiliation Data lists Ryan M. Siwiec 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.
- Ascension Providence Rochester HospitalRochester, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230254
- Beaumont Hospital, TroyTroy, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230269
- McLaren OaklandPontiac, MI · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 230207
Practice locations
Addresses where Ryan M. Siwiec is enrolled with Medicare (CMS data updated October 2, 2026).
- 3100 Cross Creek Pkwy, Suite 200Auburn Hills, MI 48326 (248) 377‑8000
Group practices
Medicare enrollment lists Ryan M. Siwiec as a member of this group (CMS data updated October 2, 2026).
- Rochester Knee and Sports Medicine PC30 clinicians in the group
Specialties
- Sports Medicineprimary
- Orthopedic Surgeryalso
Other sports medicine doctors in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Other clinicians in Rochester Knee and Sports Medicine PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841429925 |
| 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