Aaron T. Sparks, MD

Medicare activity in 2024

Official CMS public-use data for Aaron T. Sparks, 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. Replacement of aortic valve through the skin and femoral artery (33361)26 services
2. Coronary artery bypass using artery graft, 1 graft (33533)25 services
3. Harvest of vein using an endoscope (33508)24 services
4. Coronary artery bypass using vein or artery graft, 2 grafts (33518)11 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 failure73%
• Atrial fibrillation64%
• Chronic kidney disease55%

Hospitals where Aaron T. Sparks works

Medicare's Facility Affiliation Data lists Aaron T. Sparks 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.

• Lowell General HospitalLowell, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220063
• Melrosewakefield HealthcareMelrose, MA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 220070
• Tufts Medical CenterBoston, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220116

Practice locations

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

• 800 Washington StBoston, MA 02111 (617) 636‑5000

Group practices

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

• Cardiovascular Center at Tufts Medical Center Inc97 clinicians in the group

Specialties

• Cardiac Surgeryprimary
• Thoracic Surgeryalso

Find other Cardiac Surgery doctors in Massachusetts →

Other cardiac surgeons in Boston

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

• Sitaram M. Emani, MD
• Tommaso Hinna Danesi, MD
• Peter Chiu, MD
• Pimchanok Junnil, MD
• Michael H. Kwon, MD
• Gregory S. Couper, MD
• Antonia Kreso, MD
• Francis E. Fynn Thompson, MD

All cardiac surgeons in Boston →

Other clinicians in Cardiovascular Center at Tufts Medical Center Inc

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

• Andrew J. Medeiros
• Sushil K. Singh, MD
• Kara Rossetti, PA
• Phillip A. Carpino, PA
• Libin Wang, MD
• Allison Sylvester, NP

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