A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

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

LOMA LINDA, CA · Exact areaEdit location

2024 published service data · 37 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Alexander Cho

Interventional Radiology (CMS) · Loma Linda, 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 without contrast (74176)
74%Service-mix similarityView profile →

Thomas J Kelly, MD

Diagnostic Radiology (CMS) · Loma Linda, 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 without contrast (74176)
69%Service-mix similarityView profile →

Jared Webster

Diagnostic Radiology (CMS) · Loma Linda, 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 without contrast (74176)
68%Service-mix similarityView profile →

Holly Marie Mccune, M.D.

Diagnostic Radiology (CMS) · Loma Linda, 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 without contrast (74176)
65%Service-mix similarityView profile →

Timothy Donovan Naney, DO

Diagnostic Radiology (CMS) · Loma Linda, 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 without contrast (74176)
64%Service-mix similarityView profile →

Jon Miller, M.D.

Diagnostic Radiology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of abdomen and pelvis without contrast (74176)
  • X-ray of chest, 2 views (71046)
62%Service-mix similarityView profile →

Luke Spear

Diagnostic Radiology (CMS) · Loma Linda, 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 without contrast (74176)
62%Service-mix similarityView profile →

Shannon Kirk, M.D.

Diagnostic Radiology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of abdomen and pelvis without contrast (74176)
  • X-ray of chest, 2 views (71046)
59%Service-mix similarityView profile →

Mohammad Mahdi Kassir, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of abdomen and pelvis without contrast (74176)
  • Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)
59%Service-mix similarityView profile →

Kendra Fisher, M.D.

Diagnostic Radiology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of abdomen and pelvis without contrast (74176)
  • X-ray of chest, 2 views (71046)
59%Service-mix similarityView profile →

Raymond Torres Scott

Diagnostic Radiology (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of abdomen and pelvis without contrast (74176)
  • X-ray of chest, 2 views (71046)
57%Service-mix similarityView profile →

Phillip Grigsby

Diagnostic Radiology (CMS) · Loma Linda, 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 without contrast (74176)
57%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.