A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Ellyn Joyce Gray, MD with clinicians in the same registry specialty: Anesthesiology.

GRAND RAPIDS, MI · Exact areaEdit location

2024 published service data · 95 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jessica Serini, DO

Anesthesiology · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) (00562)
  • Ultrasound of heart with probe in esophagus, with report (93312)
100%Service-mix similarityView profile →

Andrew M Baudo, M.D.

Anesthesiology · Grand Rapids, MI

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Ultrasound of heart with probe in esophagus, with report (93312)
  • Ultrasound of heart blood flow, valves and chambers (93320)
82%Service-mix similarityView profile →

David Alan Christianson, M.D.

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
46%Service-mix similarityView profile →

Mark Winfield Wedder, DO

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
46%Service-mix similarityView profile →

Ibrahim El-Magharbel, M.D.

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
44%Service-mix similarityView profile →

Juan Noel Rango, MD

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
41%Service-mix similarityView profile →

Michael John Trembowicz, D.O.

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
41%Service-mix similarityView profile →

Gregory Lorrain, MD

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
39%Service-mix similarityView profile →

Aric Anson Runzheimer, MD

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
38%Service-mix similarityView profile →

Shanna Claire Tenclay, MD

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
38%Service-mix similarityView profile →

Michael Stolarczyk, MD

Anesthesiology · Grand Rapids, MI

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
36%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.