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 Lisa M Gangarosa, MD with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

CHAPEL HILL, NC · Exact areaEdit location

2024 published service data · 24 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Julia Wai-Chi Tang, MD

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Colorectal cancer screening; colonoscopy on individual at high risk (G0105)
56%Service-mix similarityView profile →

Judy A Trieu, MD

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
53%Service-mix similarityView profile →

Jasmine Bahiya Barrow, MD

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Colorectal cancer screening; colonoscopy on individual at high risk (G0105)
50%Service-mix similarityView profile →

Brian Lappas, MD, MPH

Gastroenterology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Colorectal cancer screening; colonoscopy on individual at high risk (G0105)
50%Service-mix similarityView profile →

Morton David Malkin, MD

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
  • Biopsy of large bowel using a flexible endoscope (45380)
47%Service-mix similarityView profile →

Luke Thomas Baldelli, MD

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
2 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
44%Service-mix similarityView profile →

Jonathan James Hansen, M.D., PH.D.

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk (G0121)
  • Biopsy of large bowel using a flexible endoscope (45380)
37%Service-mix similarityView profile →

Ian S Grimm, MD

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
34%Service-mix similarityView profile →

Sarah Kelly Mcgill, MD, MSC

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
2 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
34%Service-mix similarityView profile →

Hans H Herfarth, MD

Gastroenterology (CMS) · Chapel Hill, NC

Shared published services
2 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
  • Biopsy of large bowel using a flexible endoscope (45380)
29%Service-mix similarityView profile →

Nicholas J Shaheen, MD

Gastroenterology · Internal Medicine (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)
25%Service-mix similarityView profile →

Joshua Lockhart Hudson, MD

Gastroenterology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
23%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.