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Compare the published Medicare service mix of Ashley Rose Etchison, MD with clinicians in the same registry specialty: Diagnostic Radiology · Interventional Radiology (CMS).

CASTRO VALLEY, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 20 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ashley Caitlin Altman, MD

Diagnostic Radiology (CMS) · Pleasanton, CA

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • Screening 3d breast mammography (77063)
  • X-ray of chest, 1 view (71045)
82%Service-mix similarity~9.0 milesView profile →

Myrna Ayde Castelazo, M.D.

Diagnostic Radiology (CMS) · Pleasanton, CA

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • Screening 3d breast mammography (77063)
  • X-ray of chest, 1 view (71045)
77%Service-mix similarity~9.0 milesView profile →

Brooke Caldwell, M.D.

Diagnostic Radiology (CMS) · Pleasanton, CA

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • Screening 3d breast mammography (77063)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
73%Service-mix similarity~9.0 milesView profile →

Ralph Tinghan Ho, MD

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

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • Screening 3d breast mammography (77063)
  • X-ray of chest, 1 view (71045)
73%Service-mix similarity~9.0 milesView profile →

Emelina M. Fa, MD

Diagnostic Radiology (CMS) · Hayward, CA

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
55%Service-mix similarity~5.5 milesView profile →

Dawn Charisse Nwamuo, MD

Diagnostic Radiology (CMS) · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
52%Service-mix similarity~5.6 milesView profile →

Hani Sam Sharkey, MD

Diagnostic Radiology (CMS) · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan head or brain without contrast (70450)
43%Service-mix similarity~5.6 milesView profile →

Jeffrey Li, M.D.

Diagnostic Radiology (CMS) · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan of abdomen and pelvis with contrast (74177)
  • Ct scan head or brain without contrast (70450)
43%Service-mix similarity~5.6 milesView profile →

Krishna Misra, MD

Diagnostic Radiology (CMS) · Hayward, CA

Shared published services
3 shared services · view billing descriptions
  • Screening mammography (77067)
  • Screening 3d breast mammography (77063)
  • Diagnostic digital breast tomosynthesis, unilateral or bilateral (list separately in addition to 77065 or 77066) (G0279)
41%Service-mix similarity~5.5 milesView profile →

Sundeep M Nayak, M.D.

Diagnostic Radiology · Nuclear Medicine (CMS) · San Leandro, CA

Shared published services
2 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
40%Service-mix similarity~5.6 milesView profile →

Daniel R. Lim, MD

Diagnostic Radiology (CMS) · San Leandro, CA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • X-ray of chest, 2 views (71046)
  • X-ray of abdomen, 1 view (74018)
39%Service-mix similarity~5.6 milesView profile →

Grace Lin, M.D.

Diagnostic Radiology (CMS) · San Leandro, CA

Shared published services
2 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ct scan head or brain without contrast (70450)
39%Service-mix similarity~5.6 milesView 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 approximate distance 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.