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Compare the published Medicare service mix of Dennis Joseph Slamon, MD with clinicians in the same registry specialty: Hematology/Oncology (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 92 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Hao Wei Zhang, M.D.

Hematology/Oncology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
45%Service-mix similarityView profile →

Ronald Leo Paquette, MD

Hematology/Oncology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Hospital discharge day management, 30 minutes or less (99238)
38%Service-mix similarityView profile →

Howard A. Liebman, M.D.

Hematology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
37%Service-mix similarityView profile →

Preet Chaudhary, M.D., PHD

Hematology · Medical Oncology (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Hospital discharge day management, 30 minutes or less (99238)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
37%Service-mix similarityView profile →

Michael R. Snell, MD

Hematology/Oncology (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
30%Service-mix similarityView profile →

Casey L O'connell, M.D.

Hematology · Hematology/Oncology · Medical Oncology (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
28%Service-mix similarityView profile →

Caspian Oliai, M.D.

Hematology/Oncology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
24%Service-mix similarityView profile →

Jorge J. Nieva, M.D.

Hematology/Oncology · Internal Medicine · Medical Oncology (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Hospital discharge day management, 30 minutes or less (99238)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
21%Service-mix similarityView profile →

Robert Chun-Hao Hsu, M.D.

Hematology/Oncology (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Hospital discharge day management, 30 minutes or less (99238)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
21%Service-mix similarityView profile →

John Anthony Glaspy, MD

Hematology/Oncology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
20%Service-mix similarityView profile →

Cherry Au

Specialty details in registry · Los Angeles, CA

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)
20%Service-mix similarityView profile →

Bartosz Chmielowski, MD, PHD

Hematology/Oncology (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
19%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.