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Compare the published Medicare service mix of David Scott Bjerken, MD with clinicians in the same registry specialty: Surgery.

SC · Exact areaEdit location

2024 published service data · 294 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael J Mitchell, MD

Surgery · Loris, SC

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist (36902)
  • Ultrasonic guidance for blood vessel access (76937)
  • Balloon dilation of dialysis segment with review by radiologist (36907)
81%Service-mix similarityView profile →

Robert Edward Flandry, DO

Surgery · Spartanburg, SC

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist (36902)
  • Balloon dilation of dialysis segment with review by radiologist (36907)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
49%Service-mix similarityView profile →

Ari D Kramer, MD

Surgery · Spartanburg, SC

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist (36902)
  • Relocation of arm vein with connection to arm artery for hemodialysis (36821)
  • Revision of hemodialysis graft (36832)
49%Service-mix similarityView profile →

John C Lohlun, MD

Surgery · Loris, SC

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist (36902)
  • Balloon dilation of dialysis segment with review by radiologist (36907)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
45%Service-mix similarityView profile →

Cary Lloyd Brewton, D.O.

Surgery · Florence, SC

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist (36902)
  • Balloon dilation of dialysis segment with review by radiologist (36907)
  • Revision of hemodialysis graft (36832)
40%Service-mix similarityView profile →

Dion L. Franga, MD

Surgery · Orangeburg, SC

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle and/or tube into hemodialysis circuit and balloon dilation of dialysis segment with review by radiologist (36902)
  • Ultrasonic guidance for blood vessel access (76937)
  • Relocation of arm vein with connection to arm artery for hemodialysis (36821)
34%Service-mix similarityView profile →

Henry C West, M.D.

Surgery · Summerville, SC

Shared published services
3 shared services · view billing descriptions
  • Relocation of arm vein with connection to arm artery for hemodialysis (36821)
  • Revision of hemodialysis graft (36832)
  • Insertion of abdominal cavity tube using an endoscope (49324)
18%Service-mix similarityView profile →

Roland Rhystmas Craft, M.D.

Surgery · West Columbia, SC

Shared published services
2 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
16%Service-mix similarityView profile →

Mark Leslie Witkowski, DO

Surgery · Murrells Inlet, SC

Shared published services
2 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
15%Service-mix similarityView profile →

Salim Gerhard Ghorra, MD

Surgery · Murrells Inlet, SC

Shared published services
2 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
15%Service-mix similarityView profile →

Randal Jared Sanders, M.D.

Surgery · Greenville, SC

Shared published services
2 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
14%Service-mix similarityView profile →

Ethredge Myron Barwick, MD

Surgery · West Columbia, SC

Shared published services
2 shared services · view billing descriptions
  • Ultrasonic guidance for blood vessel access (76937)
  • Fluoroscopic guidance for insertion or removal of central vein access device (77001)
13%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.