Louis A. Maggio, MD

Medicare activity in 2024

Official CMS public-use data for Louis A. Maggio, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)418 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)240 services
3. Advance care planning, first 30 minutes (99497)124 services
4. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)115 services
5. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)56 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%
• Arthritis48%
• Anxiety33%
• Diabetes28%
• Ischemic heart disease25%

Hospitals where Louis A. Maggio works

Medicare's Facility Affiliation Data lists Louis A. Maggio 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
• Beth Israel Deaconess Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220086
• 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 Louis A. Maggio is enrolled with Medicare (CMS data updated October 2, 2026).

• 340 Wood RdBraintree, MA 02184 (781) 849‑1111

Group practices

Medicare enrollment lists Louis A. Maggio as a member of this group (CMS data updated October 2, 2026).

• Blue Hills Medical Associates2 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Braintree

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

• James F. McGarry Iii, MD
• Bruce M. Weinstein, MD
• Michelle A. Lally, MD
• Lisa P. Zywot, MD
• Sanskriti Varma, MD
• Richard C. Chou, MD
• Gina Manzo, MD
• Scott M. Souther, MD

All internal medicine doctors in Braintree →

Other clinicians in Blue Hills Medical Associates

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

• Madhvendra Singh, 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