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Compare the published Medicare service mix of Chinedu Olisaemeka Ejike, M.D. with clinicians in the same registry specialty: Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS).

ANN ARBOR, MI · Exact areaEdit location

2024 published service data · 48 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Bonnie Ren Shaw Wang, MD

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
38%Service-mix similarityView profile →

Robert Pickett Dickson, MD

Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
36%Service-mix similarityView profile →

Douglas Allen Arenberg, MD

Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
35%Service-mix similarityView profile →

Jakob I Mcsparron, MD

Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
35%Service-mix similarityView profile →

Victoria Mah Scicluna, MD

Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
  • Critical care, first 30-74 minutes (99291)
32%Service-mix similarityView profile →

Colin Roy Cooke, MD

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
30%Service-mix similarityView profile →

Dru Mahon Douglas Claar, MD

Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
28%Service-mix similarityView profile →

Sarah Rose Brown, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
2 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Critical care, first 30-74 minutes (99291)
27%Service-mix similarityView profile →

Sean J. Callahan

Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
26%Service-mix similarityView profile →

Wassim Walid Labaki, M.D.

Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
25%Service-mix similarityView profile →

Kayla Jean Kolbe, MD

Hospitalist · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
23%Service-mix similarityView profile →

Michael William Sjoding, MD

Internal Medicine · Pulmonary Disease (CMS) · Ann Arbor, MI

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
22%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.