A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Chad Mason Lonsford, MD with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 276 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Eric A Van Bogaert, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
85%Service-mix similarityView profile →

Danielle Marie Weems, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
84%Service-mix similarityView profile →

Devang Jitendra Desai, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
81%Service-mix similarityView profile →

Colleen Cannon Spieler, M.D.

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
80%Service-mix similarityView profile →

Edward Jan Bok, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
80%Service-mix similarityView profile →

Jordan Michael Brown, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
79%Service-mix similarityView profile →

William N Elkins, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
79%Service-mix similarityView profile →

Shannon Grace Farmakis, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
79%Service-mix similarityView profile →

Donald Joseph Grunz, M.D.

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
79%Service-mix similarityView profile →

Taylor J Patterson, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
78%Service-mix similarityView profile →

Andrew John Bierhals, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
77%Service-mix similarityView profile →

Michael Thomas Marrocco, MD

Diagnostic Radiology (CMS) · Saint Louis, MO

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)
  • Ct scan of abdomen and pelvis with contrast (74177)
77%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.