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Compare the published Medicare service mix of Kristen Carey Rock, MD with clinicians in the same registry specialty: Anesthesiology.

PHILADELPHIA, PA · Exact areaEdit location

2024 published service data · 363 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ellen Rose Dahl, MD

Anesthesiology · Philadelphia, PA

Shared published services
3 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
89%Service-mix similarityView profile →

Hazel Katherine Werlhof, M.D.

Anesthesiology · Philadelphia, PA

Shared published services
3 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
87%Service-mix similarityView profile →

Eric Feduska

Anesthesiology · Philadelphia, PA

Shared published services
3 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
74%Service-mix similarityView profile →

Arpit Nayan Patel, M.D.

Anesthesiology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Anesthesia for procedure to correct abnormal heart rhythm (00410)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
70%Service-mix similarityView profile →

Zev Noah Kornfield, MD

Anesthesiology · Philadelphia, PA

Shared published services
3 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
70%Service-mix similarityView profile →

Chitra Sivasankar, MD

Anesthesiology · Philadelphia, PA

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)
68%Service-mix similarityView profile →

Nazish Hashmi, MD

Anesthesiology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Anesthesia for procedure to correct abnormal heart rhythm (00410)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
67%Service-mix similarityView profile →

John G Augoustides, MD

Anesthesiology · Philadelphia, PA

Shared published services
3 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
65%Service-mix similarityView profile →

Erik Osman Saka, MD

Anesthesiology · Philadelphia, PA

Shared published services
3 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)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
64%Service-mix similarityView profile →

Gurjit Singh Saini, DO

Anesthesiology · Philadelphia, PA

Shared published services
3 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)
  • Anesthesia for procedure to correct abnormal heart rhythm (00410)
62%Service-mix similarityView profile →

Andrew Gold, M.D.

Anesthesiology · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for other procedure on upper abdomen (00790)
59%Service-mix similarityView profile →

Scott A Falk, MD

Anesthesiology · Philadelphia, PA

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 35 minutes (99232)
58%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.