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Compare the published Medicare service mix of Joy Kadyk Hallmark, MD with clinicians in the same registry specialty: Emergency Medicine.

CHAPEL HILL, NC · Exact areaEdit location

2024 published service data · 87 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

William Mosher, MD

Emergency Medicine · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)
  • Emergency department visit with moderate level of medical decision making (99284)
76%Service-mix similarityView profile →

Caroline Vines

Emergency Medicine · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
  • Emergency department visit with high level of medical decision making (99285)
68%Service-mix similarityView profile →

Byron Scott Parker, MD

Emergency Medicine · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
  • Emergency department visit with high level of medical decision making (99285)
64%Service-mix similarityView profile →

Cody Stauffer-Macdowell

Emergency Medicine · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
  • Emergency department visit with high level of medical decision making (99285)
61%Service-mix similarityView profile →

Zachary Cardon

Emergency Medicine · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
  • Emergency department visit with high level of medical decision making (99285)
60%Service-mix similarityView profile →

Michael Mcgarry, M.D.

Emergency Medicine · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
  • Emergency department visit with high level of medical decision making (99285)
59%Service-mix similarityView profile →

Sarah Christine Leeper, MD

Emergency Medicine · Chapel Hill, NC

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
59%Service-mix similarityView profile →

Aaron Michael Schott, M.D.

Emergency Medicine · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
  • Emergency department visit with high level of medical decision making (99285)
59%Service-mix similarityView profile →

Christopher Evans, M.D.

Emergency Medicine · Chapel Hill, NC

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
58%Service-mix similarityView profile →

Alexander Edward Fenn

Emergency Medicine · Chapel Hill, NC

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
57%Service-mix similarityView profile →

Olga Marie Otter, M.D.

Emergency Medicine · Chapel Hill, NC

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
57%Service-mix similarityView profile →

Joseph Marcus Grover, MD

Emergency Medicine · Chapel Hill, NC

Shared published services
2 shared services · view billing descriptions
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with high level of medical decision making (99285)
57%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.