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Compare the published Medicare service mix of Helen S Kao, M.D. with clinicians in the same registry specialty: Internal Medicine.

PORTLAND, OR · Exact areaEdit location

2024 published service data · 401 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Stephen D Sethi, MD

Internal Medicine · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)
  • Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)
68%Service-mix similarityView profile →

Chang Min Lee, MD

Internal Medicine · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)
  • Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)
59%Service-mix similarityView profile →

Christina Leigh Oliver, M.D.

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
16%Service-mix similarityView profile →

Steven Shanab, MD

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
16%Service-mix similarityView profile →

Jeffrey J Horacek, MD

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
12%Service-mix similarityView profile →

Vincent Chen, M.D.

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
11%Service-mix similarityView profile →

Aneil Singh Parhar, MD

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
10%Service-mix similarityView profile →

Brian T Little, D.O.

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
10%Service-mix similarityView profile →

Song Jin Sunny Kim, MD

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
10%Service-mix similarityView profile →

Hannah I Ryan, M.D.

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
10%Service-mix similarityView profile →

Narain K Kumar, M.D.

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
9%Service-mix similarityView profile →

Kyle Brekke, DO

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
9%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.