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Compare the published Medicare service mix of Antonette Kanishka Karrthik, M.D. with clinicians in the same registry specialty: Hospitalist (CMS).

KIRKLAND, WA · Exact areaEdit location

2024 published service data · 17 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Sarah P. Rougier, M.D.

Internal Medicine (CMS) · Kirkland, WA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th (G0316)
  • Critical care, first 30-74 minutes (99291)
55%Service-mix similarityView profile →

Phillip J Nickerson, MD

Hospitalist · Internal Medicine (CMS) · Kirkland, WA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Critical care, first 30-74 minutes (99291)
49%Service-mix similarityView profile →

Tristan Richard Osborn, MD

Hospitalist · Internal Medicine (CMS) · Kirkland, WA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
45%Service-mix similarityView profile →

Mark Patrick Connor, M.D.

Internal Medicine (CMS) · Kirkland, WA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
42%Service-mix similarityView profile →

Peter Schoonmaker, M.D.

Hospitalist (CMS) · Kirkland, WA

Shared published services
3 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Critical care, first 30-74 minutes (99291)
40%Service-mix similarityView profile →

Linhchi Pham, MD

Hospitalist (CMS) · Kirkland, WA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
40%Service-mix similarityView profile →

Corey Robert O'brien, M.D.

Hospitalist · Internal Medicine (CMS) · Kirkland, WA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
38%Service-mix similarityView profile →

Rashi Khanna, M.D

Hospitalist · Internal Medicine (CMS) · Kirkland, WA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
38%Service-mix similarityView profile →

Katharine Beeler, M.D.

Hospitalist (CMS) · Kirkland, WA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
36%Service-mix similarityView profile →

Derek Joseph Eppright, MD

Hospitalist · Internal Medicine (CMS) · Kirkland, WA

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
34%Service-mix similarityView profile →

Sarah Estelle Kirsch, M.D.

Hospitalist (CMS) · Kirkland, WA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
27%Service-mix similarityView profile →

Kathryn Jors Horton, M.D.

Hospitalist · Internal Medicine (CMS) · Kirkland, WA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
25%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.