HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

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

RICHARDSON, TX · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 18 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael O Mcbride, M.D.

Cardiac Surgery · General Surgery · Thoracic Surgery (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
  • Exclusion of appendage of left upper chamber of heart performed during other procedure on chest (33268)
  • Coronary artery bypass using artery graft, 1 graft (33533)
49%Service-mix similarity~3.1 milesView profile →

Todd M. Dewey, M.D.

Cardiac Surgery · General Surgery · Thoracic Surgery (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Harvest of vein using an endoscope (33508)
  • Exclusion of appendage of left upper chamber of heart performed during other procedure on chest (33268)
47%Service-mix similarity~3.1 milesView profile →

Andres Leal, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
47%Service-mix similarity~1.0 milesView profile →

Matthias Peltz, MD

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

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
37%Service-mix similarity~8.6 milesView profile →

Aldo Elmer Rafael Yarihuaman, MD

Thoracic Surgery (CMS) · Dallas, TX

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Harvest of vein using an endoscope (33508)
  • Coronary artery bypass using artery graft, 1 graft (33533)
36%Service-mix similarity~7.0 milesView profile →

Brian Kilmartin, M.D.

Thoracic Surgery (CMS) · Dallas, 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)
29%Service-mix similarity~7.2 milesView profile →

Brandon Robert Hill, MD

Thoracic Surgery (CMS) · Dallas, TX

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Harvest of vein using an endoscope (33508)
25%Service-mix similarity~1.0 milesView profile →

Jaye Alexander Weston

Thoracic Surgery (CMS) · Dallas, TX

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
24%Service-mix similarity~8.6 milesView profile →

David Benjamin Nelson, M.D.

Thoracic Surgery (CMS) · Dallas, TX

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
23%Service-mix similarity~8.6 milesView profile →

Michael E Jessen, MD

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

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Coronary artery bypass using artery graft, 1 graft (33533)
23%Service-mix similarity~8.6 milesView profile →

Gary Schwartz, MD

Thoracic Surgery (CMS) · Dallas, TX

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
22%Service-mix similarity~6.6 milesView profile →

Scott Ira Reznik, M.D.

Cardiac Surgery · General Surgery · Thoracic Surgery (CMS) · Dallas, TX

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
17%Service-mix similarity~8.6 milesView 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 approximate distance 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.