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Compare the published Medicare service mix of William J Fischer, M.D. with clinicians in the same registry specialty: Cardiac Surgery · Thoracic Surgery (CMS).

MILWAUKEE, WI · Exact areaEdit location

2024 published service data · 19 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Yuting Patrick Chiang

Thoracic Surgery (CMS) · Milwaukee, WI

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)
74%Service-mix similarityView profile →

Andrew Q Lin, M.D.

Thoracic Surgery (CMS) · Milwaukee, WI

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)
68%Service-mix similarityView profile →

Scott Johnson, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Milwaukee, WI

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)
68%Service-mix similarityView profile →

Goya V Raikar, MD

Thoracic Surgery (CMS) · Milwaukee, WI

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)
  • Coronary artery bypass using artery graft, 1 graft (33533)
58%Service-mix similarityView profile →

Andrei Churyla, M.D.

Thoracic Surgery (CMS) · Milwaukee, WI

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)
56%Service-mix similarityView profile →

James E Mace, MD

General Surgery (CMS) · Milwaukee, WI

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)
55%Service-mix similarityView profile →

William Sheehan Ragalie, M.D.

Cardiac Surgery · Thoracic Surgery (CMS) · Milwaukee, WI

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)
49%Service-mix similarityView profile →

John D Crouch, M.D.

Thoracic Surgery (CMS) · Milwaukee, WI

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)
  • Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and (G0180)
41%Service-mix similarityView profile →

Nathaniel Seth Laden, M.D., M.S.

Thoracic Surgery (CMS) · Milwaukee, WI

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
39%Service-mix similarityView profile →

David Steven Demos, MD

Thoracic Surgery (CMS) · Milwaukee, WI

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
23%Service-mix similarityView profile →

Manuel Rojo, M.D.

Thoracic Surgery (CMS) · Milwaukee, WI

Shared published services
1 shared services · view billing descriptions
  • Harvest of vein using an endoscope (33508)
21%Service-mix similarityView profile →

William B Tisol, MD

Cardiac Surgery · Thoracic Surgery (CMS) · Milwaukee, WI

Shared published services
1 shared services · view billing descriptions
  • Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and (G0180)
12%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.