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Compare the published Medicare service mix of Joel Chiu with clinicians in the same registry specialty: Emergency Medicine.

SAN LEANDRO, CA · Exact areaEdit location

2024 published service data · 27 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Rogelio Sebastian Dawkins

Emergency Medicine · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
56%Service-mix similarityView profile →

Anthony Michael Montefusco

Emergency Medicine · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
54%Service-mix similarityView profile →

Emily Chien

Emergency Medicine · San Leandro, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
53%Service-mix similarityView profile →

Kenneth Satoshi Kumamoto, MD

Emergency Medicine · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
52%Service-mix similarityView profile →

Louis Yu, M.D.

Emergency Medicine · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
51%Service-mix similarityView profile →

Cameron Jones, MD

Emergency Medicine · San Leandro, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
49%Service-mix similarityView profile →

Rafael Almeida Lima, MD

Emergency Medicine · San Leandro, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
46%Service-mix similarityView profile →

Allison Boyd, M.D.

Emergency Medicine · San Leandro, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Emergency department visit with high level of medical decision making (99285)
45%Service-mix similarityView profile →

Matthew Joseph Hughes, MD

Emergency Medicine · San Leandro, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
43%Service-mix similarityView profile →

Aaron Allan Burchfield, MD

Emergency Medicine · San Leandro, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
43%Service-mix similarityView profile →

Chin-Hsiang Feng

Emergency Medicine · San Leandro, CA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
39%Service-mix similarityView profile →

Vibha Kundi Gupta, M.D.

Emergency Medicine · San Leandro, CA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
39%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.