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Compare the published Medicare service mix of Thomas Macgillivray, MD with clinicians in the same registry specialty: Thoracic Surgery (CMS).

HOUSTON, TX · Exact areaEdit location

2024 published service data · 61 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael S Sweeney, M.D.,

Specialty details in registry · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Coronary artery bypass using vein or artery graft, 2 grafts (33518)
79%Service-mix similarityView profile →

Robert Andrew Hetz, M.D.

General Surgery · Thoracic Surgery (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Replacement of aortic valve through the skin and femoral artery (33361)
  • Coronary artery bypass using vein or artery graft, 2 grafts (33518)
78%Service-mix similarityView profile →

Alexis Edward Shafii, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
69%Service-mix similarityView profile →

Andrea Giulio Quarti, MD

Thoracic Surgery · Vascular Surgery (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
69%Service-mix similarityView profile →

Juan Ariel Abreu, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Replacement of aortic valve through the skin and femoral artery (33361)
67%Service-mix similarityView profile →

Gerald Murray Lawrie, MD

Thoracic Surgery (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Coronary artery bypass using vein or artery graft, 2 grafts (33518)
61%Service-mix similarityView profile →

Mahesh Ramchandani, MD

Thoracic Surgery · Vascular Surgery (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
59%Service-mix similarityView profile →

Ross M Reul, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Coronary artery bypass using vein or artery graft, 2 grafts (33518)
58%Service-mix similarityView profile →

Walter W Ohara, MD

Thoracic Surgery (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
57%Service-mix similarityView profile →

Marc R Moon, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
56%Service-mix similarityView profile →

Lucas Maier Duvall, MD

Cardiac Surgery · General Surgery · Hospitalist · Thoracic Surgery (CMS) · Houston, TX

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
  • Replacement of aortic valve through the skin and femoral artery (33361)
55%Service-mix similarityView profile →

Fernando Ramirez Del Val, MD

General Surgery (CMS) · Houston, TX

Shared published services
2 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Replacement of aortic valve through the skin and femoral artery (33361)
54%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.