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

CA · Exact areaEdit location

2024 published service data · 307 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ramin E Beygui, MD

Cardiovascular Disease (Cardiology) · Thoracic Surgery · Vascular Surgery (CMS) · San Francisco, CA

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Coronary artery bypass using artery graft, 1 graft (33533)
90%Service-mix similarityView profile →

Philip Angelo Faraci, M.D.

General Surgery · Thoracic Surgery (CMS) · Thousand Oaks, CA

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)
85%Service-mix similarityView profile →

Frederick William Mayer, MD

Cardiac Surgery (CMS) · Visalia, CA

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Coronary artery bypass using artery graft, 1 graft (33533)
82%Service-mix similarityView profile →

James Longoria, M.D.

Cardiac Surgery · Thoracic Surgery · Vascular Surgery (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Coronary artery bypass using artery graft, 1 graft (33533)
78%Service-mix similarityView profile →

Ming-Lu Huang, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Los Angeles, CA

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)
75%Service-mix similarityView profile →

William N Thibault, MD

Thoracic Surgery (CMS) · Orange, CA

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)
75%Service-mix similarityView profile →

Andrea Virginia Corpora, PA-C

Physician Assistant (CMS) · Rancho Mirage, CA

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)
75%Service-mix similarityView profile →

Marc P Sakwa, MD

Thoracic Surgery (CMS) · Long Beach, CA

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Coronary artery bypass using artery graft, 1 graft (33533)
71%Service-mix similarityView profile →

Azad Salar Karim, MD

Thoracic Surgery (CMS) · Sacramento, CA

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)
71%Service-mix similarityView profile →

Robert R Klingman, MD

Thoracic Surgery (CMS) · Napa, CA

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)
70%Service-mix similarityView profile →

Gregory Scott Spowart, M.D.

Cardiac Surgery (CMS) · Monterey, CA

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Coronary artery bypass using artery graft, 1 graft (33533)
69%Service-mix similarityView profile →

Ambreen Laeeq, M.D.

Thoracic Surgery (CMS) · Monterey, CA

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Coronary artery bypass using artery graft, 1 graft (33533)
68%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.