A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Margaret M O'brien, MD with clinicians in the same registry specialty: Anesthesiology.

BRYN MAWR, PA · Exact areaEdit location

2024 published service data · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Elizabeth Megas Kim, M.D.

Anesthesiology · Bryn Mawr, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for exam of colon using an endoscope (00812)
71%Service-mix similarityView profile →

Garen M Simonyan, MD

Anesthesiology · Bryn Mawr, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for exam of colon using an endoscope (00812)
67%Service-mix similarityView profile →

John Michael Nguyen, MD

Anesthesiology · Bryn Mawr, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for exam of colon using an endoscope (00812)
66%Service-mix similarityView profile →

Jennifer Ann Smith, M.D.

Anesthesiology · Bryn Mawr, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for exam of colon using an endoscope (00812)
63%Service-mix similarityView profile →

Joseph Somers

Anesthesiology · Bryn Mawr, PA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
59%Service-mix similarityView profile →

Lauren Georgiades Keeney, DO

Anesthesiology · Bryn Mawr, PA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
58%Service-mix similarityView profile →

Taiwo Aderibigbe, MD

Anesthesiology · Bryn Mawr, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for exam of colon using an endoscope (00812)
49%Service-mix similarityView profile →

Cara Leigh Beahm, MD

Anesthesiology · Bryn Mawr, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for exam of colon using an endoscope (00812)
40%Service-mix similarityView profile →

Sapna Havildar, MD

Anesthesiology · Bryn Mawr, PA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
38%Service-mix similarityView profile →

Glen Quigley, M.D.

Anesthesiology · Bryn Mawr, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on skin of arms, legs, and front body (00400)
38%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.