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Compare the published Medicare service mix of Lorenzo Nardo with clinicians in the same registry specialty: Diagnostic Radiology · Nuclear Medicine (CMS).

SACRAMENTO, CA · Exact areaEdit location

2024 published service data · 162 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Fatma Sen, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)
  • Nuclear medicine studies of blood flow in heart muscle at rest and with stress with concurrent ct scan (78431)
91%Service-mix similarityView profile →

Hazem H Chehabi, MD

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

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
49%Service-mix similarityView profile →

Nataraj Shanmugam, M.D.

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

Shared published services
3 shared services · view billing descriptions
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
25%Service-mix similarityView profile →

Alvin J. Yamamoto, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
17%Service-mix similarityView profile →

Curtis R Duffield, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
1 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
12%Service-mix similarityView profile →

Alisa Tanakit, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
2 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
9%Service-mix similarityView profile →

Henry Chen, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
3 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
9%Service-mix similarityView profile →

Gregory Rogalski, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
2 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuries (A9552)
8%Service-mix similarityView profile →

Emily Zerwas Ritchie, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
2 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
8%Service-mix similarityView profile →

Cuong T. Vuong, M.D.

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
1 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
7%Service-mix similarityView profile →

Benjamin Owen

Interventional Radiology (CMS) · Sacramento, CA

Shared published services
1 shared services · view billing descriptions
  • Dxa bone density measurement of hip, pelvis, spine (77080)
6%Service-mix similarityView profile →

Anthony E Galinato, MD

Diagnostic Radiology (CMS) · Sacramento, CA

Shared published services
2 shared services · view billing descriptions
  • Nuclear medicine study from skull base to mid-thigh with ct scan (78815)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
6%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.