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Compare the published Medicare service mix of Samuel Lewis Johnston, M.D. with clinicians in the same registry specialty: Specialty details in registry.

IOWA CITY, IA · Exact areaEdit location

2024 published service data · 7 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Denice M Hodgson-Zingman, M.D.

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Electrocardiogram (ecg) 2-day continuous with review by health care professional (93227)
  • Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional (93272)
61%Service-mix similarityView profile →

Edward Michael Powers, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Electrocardiogram (ecg) 2-day continuous with review by health care professional (93227)
  • Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional (93272)
56%Service-mix similarityView profile →

David A Hamon, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Electrocardiogram (ecg) 2-day continuous with review by health care professional (93227)
  • Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional (93272)
49%Service-mix similarityView profile →

Peter D Farjo, MD, MS

Cardiovascular Disease (Cardiology) (CMS) · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Electrocardiogram (ecg) 2-day continuous with review by health care professional (93227)
  • Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional (93272)
  • Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days (93244)
40%Service-mix similarityView profile →

Paari Dominic, M.B.B.S.

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Electrocardiogram (ecg) 2-day continuous with review by health care professional (93227)
  • Electrocardiogram (ecg) up to 30 days continuous with symptom monitoring, transmission and review and report by health care professional (93272)
  • Heart rhythm review, and interpretation of continous external ekg over more than 48 hours up to 7 days (93244)
40%Service-mix similarityView profile →

Oluwaseun Gbolabo Adeola, MBCHB

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
  • External shock to heart to regulate heart beat (92960)
29%Service-mix similarityView profile →

James R Hopson, MD

Cardiac Electrophysiology · Cardiovascular Disease (Cardiology) (CMS) · Iowa City, IA

Shared published services
1 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
23%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.