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Compare the published Medicare service mix of Elizabeth Cho, M.D. with clinicians in the same registry specialty: Emergency Medicine.

WALNUT CREEK, CA · Exact areaEdit location

2024 published service data · 43 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David Adrian Lilienstein, MD

Emergency Medicine · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
100%Service-mix similarityView profile →

David Shapiro

Emergency Medicine · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
100%Service-mix similarityView profile →

Joshua Andrew Lee, M.D.

Emergency Medicine · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
99%Service-mix similarityView profile →

Gina Pan, MD

Emergency Medicine · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
99%Service-mix similarityView profile →

Harold S. Woo, DO

Emergency Medicine · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
84%Service-mix similarityView profile →

Michael G. Lucas, DO

Emergency Medicine · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
83%Service-mix similarityView profile →

Samantha Chin, M.D

Emergency Medicine · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
82%Service-mix similarityView profile →

Chi Lee Perlroth, MD

Emergency Medicine · Walnut Creek, CA

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
81%Service-mix similarityView profile →

Stephanie Carlson, MD

Emergency Medicine · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
78%Service-mix similarityView profile →

Margaret Mahaffa

Emergency Medicine · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
78%Service-mix similarityView profile →

Yalina Disla, MD, MPH

Emergency Medicine · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
78%Service-mix similarityView profile →

Jeffrey Huang, MD

Emergency Medicine · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
78%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.