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Compare the published Medicare service mix of Zachary Ryan Healy, MD PHD with clinicians in the same registry specialty: Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS).

DURHAM, NC · Exact areaEdit location

2024 published service data · 35 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Sweta Mahesh Patel, M.D.

Pulmonary Disease (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test for exercise-induced lung stress (94618)
94%Service-mix similarityView profile →

Peter Samuel Kussin, M.D.

Specialty details in registry · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test for exercise-induced lung stress (94618)
77%Service-mix similarityView profile →

Donald M Rabil, MD

Pulmonary Disease (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test for exercise-induced lung stress (94618)
71%Service-mix similarityView profile →

David Joseph Yehuda Shaz, MD

Pulmonary Disease (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test for exercise-induced lung stress (94618)
64%Service-mix similarityView profile →

Eugene Friedman, M.D., PH.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test for exercise-induced lung stress (94618)
60%Service-mix similarityView profile →

Harvey Edwin Marshall, M.D.

Internal Medicine · Pulmonary Disease (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test to determine lung volumes using sensors (94726)
57%Service-mix similarityView profile →

Joseph Govert, M.D.

Pulmonary Disease (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test to determine lung volumes using sensors (94726)
55%Service-mix similarityView profile →

Lake Daniel Morrison, MD

Internal Medicine (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test to determine lung volumes using sensors (94726)
53%Service-mix similarityView profile →

Alyssa Soskis, MD

Pulmonary Disease (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Test to measure rate of airflow (94375)
  • Test to examine how well the lungs exchange gases (94729)
  • Test to determine lung volumes using sensors (94726)
34%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.