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

WALNUT CREEK, CA · Exact areaEdit location

2024 published service data · 62 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Christopher Allan Mutch, MD

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
66%Service-mix similarityView profile →

Robinson Ku Yu, MD

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
64%Service-mix similarityView profile →

Annie Po Wah Lai, MD

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
61%Service-mix similarityView profile →

Kirk C So, M.D.

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
61%Service-mix similarityView profile →

Aseem Om Rawal, M.D.

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
51%Service-mix similarityView profile →

Osamu Fernando Kaneko, MD

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
48%Service-mix similarityView profile →

George Chu, MD

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
45%Service-mix similarityView profile →

Stephen Hesseltine, M.D.

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
45%Service-mix similarityView profile →

Samuel Choi, M.D.

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
43%Service-mix similarityView profile →

Patrick R Ryan, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
43%Service-mix similarityView profile →

Vishal Panchal, M.D.

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
41%Service-mix similarityView profile →

Scott Andrew Lipson, MD

Diagnostic Radiology (CMS) · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • Ct scan of blood vessels of head with contrast (70496)
  • Ct scan of blood vessels of neck with contrast (70498)
40%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.