A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

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

CA · Exact areaEdit location

2024 published service data · 54 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Peter Minh Phan, MD

Diagnostic Radiology · Nuclear Medicine (CMS) · Aliso Viejo, 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)
  • X-ray of chest, 2 views (71046)
69%Service-mix similarityView profile →

Maria L Parayno, M.D.

Nuclear Medicine (CMS) · Duarte, 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)
  • X-ray of chest, 2 views (71046)
45%Service-mix similarityView profile →

Simon Trubek, MD

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

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
42%Service-mix similarityView profile →

Ray Rui Zhang, MD, PHD

Diagnostic Radiology · Nuclear Medicine (CMS) · Stanford, CA

Shared published services
1 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
42%Service-mix similarityView profile →

Puneet Chandak, M.D.

Diagnostic Radiology · Nuclear Medicine (CMS) · Fremont, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan head or brain without contrast (70450)
  • X-ray of chest, 2 views (71046)
  • Ct scan of abdomen and pelvis with contrast (74177)
31%Service-mix similarityView profile →

Fereshteh Hajsadeghi, MD

Diagnostic Radiology · Nuclear Medicine (CMS) · Santa Clarita, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of shoulder, minimum of 2 views (73030)
  • X-ray of lower and sacral spine, 2-3 views (72100)
24%Service-mix similarityView profile →

Hossein Jadvar, M.D.

Diagnostic Radiology · Nuclear Medicine (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 without contrast (71250)
  • Ct scan of chest with contrast (71260)
23%Service-mix similarityView profile →

Randy Yeh, M.D.

Diagnostic Radiology · Nuclear Medicine (CMS) · Sylmar, CA

Shared published services
2 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
20%Service-mix similarityView profile →

David Matthew Carlson, M.D.

Diagnostic Radiology · Nuclear Medicine (CMS) · Santa Barbara, CA

Shared published services
3 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest without contrast (71250)
  • Ct scan of chest with contrast (71260)
20%Service-mix similarityView profile →

Patrick Michael Colletti, M.D.

Diagnostic Radiology · Nuclear Medicine (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan of chest with contrast (71260)
18%Service-mix similarityView profile →

Shahram Bonyadlou, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • X-ray of shoulder, minimum of 2 views (73030)
  • X-ray of lower and sacral spine, 2-3 views (72100)
14%Service-mix similarityView profile →

Feraas Jabi, M.D.

Diagnostic Radiology (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • X-ray of chest, 2 views (71046)
  • Ct scan of chest without contrast (71250)
10%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.