A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Ralph Maximillian Koenker, M.D. with clinicians in the same registry specialty: Diagnostic Radiology · Interventional Radiology (CMS).

GREENBRAE, CA · Exact areaEdit location

2024 published service data · 9 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Peter Mark Smith, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • Ct scan of abdomen and pelvis with contrast (74177)
90%Service-mix similarityView profile →

Philip Stephen Kurzman, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • Ct scan of abdomen and pelvis with contrast (74177)
90%Service-mix similarityView profile →

Donna Hoghooghi, M.D.

Diagnostic Radiology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • Ct scan of abdomen and pelvis with contrast (74177)
86%Service-mix similarityView profile →

William James Demartini, M.D.

Diagnostic Radiology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
  • Ct scan of abdomen and pelvis with contrast (74177)
82%Service-mix similarityView profile →

Betsy A Holland, M.D.

Diagnostic Radiology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of lower and sacral spine, 2-3 views (72100)
  • Mri scan of brain without contrast (70551)
33%Service-mix similarityView profile →

Natalya Lvoff, M.D.

Diagnostic Radiology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • Screening 3d breast mammography (77063)
  • Screening mammography (77067)
  • Dxa bone density measurement of hip, pelvis, spine (77080)
31%Service-mix similarityView profile →

Damon C Sacco, M.D.

Diagnostic Radiology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of lower and sacral spine, minimum of 4 views (72110)
  • Mri scan of lower spinal canal without contrast (72148)
19%Service-mix similarityView profile →

Jay A Kaiser, M.D.

Diagnostic Radiology (CMS) · Greenbrae, CA

Shared published services
3 shared services · view billing descriptions
  • Mri scan of lower spinal canal without contrast (72148)
  • Mri scan of upper spinal canal without contrast (72141)
  • Mri scan of middle spinal canal without contrast (72146)
18%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.