HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of David Chang, MD with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

CA · Exact areaEdit location

2024 published service data · 156 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Miriam Romero, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
78%Service-mix similarityView profile →

Y Vien Tran Nguyen, D.O.

Diagnostic Radiology (CMS) · Mission Viejo, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
72%Service-mix similarityView profile →

Bonnie Lynn Garon, M.D.

Specialty details in registry · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
70%Service-mix similarityView profile →

Peter Dean Poullos, M.D.

Diagnostic Radiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
69%Service-mix similarityView profile →

Vinay Anant Duddalwar, M.D.

Specialty details in registry · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
68%Service-mix similarityView profile →

Stefanie Weinstein, MD

Diagnostic Radiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
65%Service-mix similarityView profile →

Luyao Shen, MD

Diagnostic Radiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
62%Service-mix similarityView profile →

Justin Ruey Tse, MD

Diagnostic Radiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
62%Service-mix similarityView profile →

Aya Kamaya, MD

Diagnostic Radiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
62%Service-mix similarityView profile →

Edward Che-Wen Lo, MD

Diagnostic Radiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
60%Service-mix similarityView profile →

Michael C Yang, M.D.

Diagnostic Radiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
59%Service-mix similarityView profile →

Kristen Nicole Bird, MD

Diagnostic Radiology (CMS) · Stanford, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
  • Ct scan of chest without contrast (71250)
58%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.