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Compare the published Medicare service mix of Christina Leigh Oliver, 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.

Sanjiv M Panwala, MD

Internal Medicine · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
  • Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
63%Service-mix similarityView profile →

Leah Beth Kalin, M.D.

Internal Medicine · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • Nursing facility discharge management, more than 30 minutes (99316)
57%Service-mix similarityView profile →

Ginger W Wey, M.D.

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
42%Service-mix similarityView profile →

Brian Tihomir Pavic, M.D.

Internal Medicine · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes (99305)
37%Service-mix similarityView profile →

Michael Dean Dellinger, MD

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
36%Service-mix similarityView profile →

Emily Ames Morgan, M.D.

Internal Medicine · Portland, OR

Shared published services
3 shared services · view billing descriptions
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • Nursing facility discharge management, more than 30 minutes (99316)
34%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)
23%Service-mix similarityView profile →

Narain K Kumar, M.D.

Internal Medicine · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
  • Nursing facility discharge management, more than 30 minutes (99316)
23%Service-mix similarityView profile →

Sean Michael Friend, M.D.

Internal Medicine · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
  • Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)
20%Service-mix similarityView profile →

Siddharth K Joshi, M.D.

Internal Medicine · Portland, OR

Shared published services
2 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • Nursing facility discharge management, more than 30 minutes (99316)
19%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)
18%Service-mix similarityView profile →

Angela R Hahn, MD

Internal Medicine · Portland, OR

Shared published services
1 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
17%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.