Brendan W. Riley

Medicare activity in 2024

Official CMS public-use data for Brendan W. Riley, 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.

Most frequent services

1. Emergency department visit with moderate level of medical decision making (99284)109 services
2. Emergency department visit with low level of medical decision making (99283)42 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)41 services
4. Aspiration and/or injection of fluid from large joint (20610)38 services
5. Emergency department visit with high level of medical decision making (99285)18 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 pressure72%
• Arthritis57%
• Anxiety50%
• Depression34%
• Diabetes28%

Hospitals where Brendan W. Riley works

Medicare's Facility Affiliation Data lists Brendan W. Riley 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.

• South Shore HospitalSouth Weymouth, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220100

Practice locations

Addresses where Brendan W. Riley is enrolled with Medicare (CMS data updated October 2, 2026).

• 55 Fogg RdWeymouth, MA 02190 (781) 792‑4136
• 88 Washington StTaunton, MA 02780 (508) 828‑7000

Group practices

Medicare enrollment lists Brendan W. Riley as a member of these groups (CMS data updated October 2, 2026).

• Lifespan Physician Group of Massachusetts Inc476 clinicians in the group
• Coastal Medical Associates443 clinicians in the group

Specialties

• Physician Assistantprimary

Find other clinicians: Physician Assistant, Massachusetts →

Other physician assistants in Weymouth

Clinicians with the same Medicare primary specialty in Weymouth, MA — not a recommendation.

• Christopher R. Cannell, PA
• Jacqueline Berolini
• Jack G. Leung
• Kaitlin Spiegel, PA
• Beth Anderson, PA
• Katina Katides, PA
• Rebecca S. White
• James L. Nelson, PA

All physician assistants in Weymouth →

Other clinicians in Lifespan Physician Group of Massachusetts Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Maria P. Rumsey, MD
• Brienne Wapenyi
• Dhanesh Dookhran, MD
• Chelsea Kirker
• Scott B. Wagner, CNA
• John Niceforo, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians