Quick answers
- Does Joseph L. Sirois Iii accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph L. Sirois Iii 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 Joseph L. Sirois Iii see?
- In 2024, CMS data shows 293 Original Medicare patients and 2,419 services for Joseph L. Sirois Iii. This counts Original Medicare only and measures volume, not quality.
- What is Joseph L. Sirois Iii's NPI number?
- 1841283942. 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 Joseph L. Sirois Iii, 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 | 293 |
|---|---|
| Services billed to Medicare | 2,419 |
| Different services or procedures | 60 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)1,171 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)266 services
- Aspiration and/or injection of fluid from large joint (20610)185 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)93 services
- X-ray of knee, 1-2 views (73560)80 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 pressure74%
- High cholesterol74%
- Arthritis62%
- Anxiety32%
- Diabetes23%
- Ischemic heart disease22%
Hospitals where Joseph L. Sirois Iii works
Medicare's Facility Affiliation Data lists Joseph L. Sirois Iii 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.
- Beth Israel Deaconess Hospital - MiltonMilton, MA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 220108
Practice locations
Addresses where Joseph L. Sirois Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 Highland St, Suite G 3Milton, MA 02186 (617) 696‑9299
- 825 Washington St, Suite 260Norwood, MA 02062 (781) 769‑6720
Group practices
Medicare enrollment lists Joseph L. Sirois Iii as a member of these groups (CMS data updated October 2, 2026).
- Orthopaedic Specialists of Massachusetts LLC8 clinicians in the group
- Orthopaedic Specialists of Massachusetts PC6 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Milton
Clinicians with the same Medicare primary specialty in Milton, MA — not a recommendation.
Other clinicians in Orthopaedic Specialists of Massachusetts LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 1983 (43 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) | 1841283942 |
| 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