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 Kevin Frank Ollington, MD with clinicians in the same registry specialty: Gastroenterology (CMS).

BEVERLY, MA · Exact areaEdit location

2024 published service data · 7 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Lawrence Murphy, M.D.

Gastroenterology (CMS) · Beverly, MA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
62%Service-mix similarityView profile →

Kenneth Shieh, M.D.

Gastroenterology (CMS) · Beverly, MA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
62%Service-mix similarityView profile →

Seth Homer, M.D.

Gastroenterology · Internal Medicine (CMS) · Beverly, MA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
60%Service-mix similarityView profile →

Maria Lonshteyn

Gastroenterology (CMS) · Beverly, MA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
59%Service-mix similarityView profile →

Timothy M Smith, M.D.

Gastroenterology (CMS) · Beverly, MA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
58%Service-mix similarityView profile →

Ronald Ste.marie, M.D.

Gastroenterology (CMS) · Beverly, MA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
55%Service-mix similarityView profile →

Rosa T. Bui, M.D.

Gastroenterology (CMS) · Beverly, MA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Biopsy of large bowel using a flexible endoscope (45380)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
53%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.