A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Julie Koo, M.D. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

SACRAMENTO, CA · Exact areaEdit location

2024 published service data · 162 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Dominic De Marco, MD

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
88%Service-mix similarityView profile →

John Xuan Nguyen, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
84%Service-mix similarityView profile →

Stephen Vong, MD

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
84%Service-mix similarityView profile →

Khai Anh Tran, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
80%Service-mix similarityView profile →

Julie Anne Lee, D.O

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
80%Service-mix similarityView profile →

Eleanor Tinai Yu, MD

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
80%Service-mix similarityView profile →

Jason B Wiesner, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
78%Service-mix similarityView profile →

Huu-Ninh Vien Dao, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
77%Service-mix similarityView profile →

Christopher Nicholas Simopoulos, MD

Specialty details in registry · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
77%Service-mix similarityView profile →

Ramanjyot K Muhar, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
76%Service-mix similarityView profile →

Viviane Garbaccio Delaney, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
75%Service-mix similarityView profile →

Christopher Kevin Hoffman, M.D.

Diagnostic Radiology · Emergency Medicine (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Ct scan of abdomen and pelvis with contrast (74177)
74%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.