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Compare the published Medicare service mix of Sarah Elizabeth Hartley, MD with clinicians in the same registry specialty: Internal Medicine.

ANN ARBOR, MI · Exact areaEdit location

2024 published service data · 267 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Adam A Zahr, M.D.

Internal Medicine · Ann Arbor, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, 30 minutes or less (99238)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
91%Service-mix similarityView profile →

Robert Francis Paretti, M.D.

Internal Medicine · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, 30 minutes or less (99238)
90%Service-mix similarityView profile →

Mark Kluk, MD

Internal Medicine · Ann Arbor, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, 30 minutes or less (99238)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
88%Service-mix similarityView profile →

Fatimah Chamseddine, MD

Internal Medicine · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
84%Service-mix similarityView profile →

Julian Patrick Buchinger, MD

Internal Medicine · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
79%Service-mix similarityView profile →

Vikas Indravadan Parekh, MD

Internal Medicine · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, 30 minutes or less (99238)
79%Service-mix similarityView profile →

Mahrukh Khalid, MD

Internal Medicine · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
79%Service-mix similarityView profile →

Steven James Wilson, MD

Internal Medicine · Ann Arbor, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, 30 minutes or less (99238)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
78%Service-mix similarityView profile →

Abigail Miriam Erinc, MD

Internal Medicine · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
77%Service-mix similarityView profile →

Fan Chen, M.D.

Internal Medicine · Ann Arbor, MI

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, 30 minutes or less (99238)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
77%Service-mix similarityView profile →

Anna Marie Burke, D.O.

Internal Medicine · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
77%Service-mix similarityView profile →

Brian Thomas Emmer, MD

Internal Medicine · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
77%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.