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Compare the published Medicare service mix of Mark David Sullivan, M.D. with clinicians in the same registry specialty: Internal Medicine.

SEATTLE, WA · Exact areaEdit location

2024 published service data · 347 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Adeena Khan, M.D.

Internal Medicine · Seattle, WA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
67%Service-mix similarityView profile →

Michelle A Pham, MD

Internal Medicine · Seattle, WA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
65%Service-mix similarityView profile →

Vamshi Thandra, MD

Internal Medicine · Seattle, WA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
64%Service-mix similarityView profile →

Fawaz Ahmad, MD, MS

Internal Medicine · Seattle, WA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
64%Service-mix similarityView profile →

David R. Ohlson, DO

Internal Medicine · Seattle, WA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
62%Service-mix similarityView profile →

Omar Bayomy, MD

Internal Medicine · Seattle, WA

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
60%Service-mix similarityView profile →

Jennifer Sook Hammon, M.D.

Internal Medicine · Seattle, WA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
59%Service-mix similarityView profile →

Janice M. Connolly, MD

Internal Medicine · Seattle, WA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
58%Service-mix similarityView profile →

Ann Schraufnagel, M.D.

Internal Medicine · Seattle, WA

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
52%Service-mix similarityView profile →

Bennett C. Burke, MD

Internal Medicine · Seattle, WA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
50%Service-mix similarityView profile →

Abigail K Alt, M.D.

Internal Medicine · Seattle, WA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
49%Service-mix similarityView profile →

Karol Bomsztyk

Internal Medicine · Seattle, WA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
48%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.