Aaron D. Aguirre, MD

Medicare activity in 2024

Official CMS public-use data for Aaron D. Aguirre, 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. Critical care, first 30-74 minutes (99291)155 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 pressure75%
• High cholesterol75%
• Ischemic heart disease75%
• Heart failure75%
• Atrial fibrillation75%
• Chronic kidney disease70%

Hospitals where Aaron D. Aguirre works

Medicare's Facility Affiliation Data lists Aaron D. Aguirre 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.

• Massachusetts General HospitalBoston, MA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 220071

Practice locations

Addresses where Aaron D. Aguirre is enrolled with Medicare (CMS data updated October 2, 2026).

• 55 Fruit StBoston, MA 02114 (617) 724‑0287

Group practices

Medicare enrollment lists Aaron D. Aguirre as a member of this group (CMS data updated October 2, 2026).

• Massachusetts General Physicians Organization Inc3,558 clinicians in the group

Specialties

• Cardiovascular Disease (Cardiology)primary
• Critical Care (Intensivists)also
• Internal Medicinealso

Find other Cardiovascular Disease (Cardiology) doctors in Massachusetts →

Other cardiologists in Boston

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

• Godtfred Holmvang, MD
• Charles D. Resor, MD
• Frank Qian, MD
• Grace Hsieh, MD
• James D. Chang, MD
• Joseph P. Kannam, MD
• Frederick C. Basilico, MD
• Ashvin N. Pande, MD

All cardiologists in Boston →

Other clinicians in Massachusetts General Physicians Organization Inc

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

• Edwin R. Raffi, MD
• Andrew S. Cruz, MD
• Merissa N. Zeman, MD
• Nicolette C. Fontaine, MD
• Godtfred Holmvang, MD
• Maxwell J. Uetz, 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