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Compare the published Medicare service mix of David Fielding Willis, M.D. with clinicians in the same registry specialty: Internal Medicine.

NC · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Emmanuel Okechukwu Nwamara-Aka

Internal Medicine · Fayetteville, NC

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)
100%Service-mix similarityView profile →

Eliseu Yung Chuang, M.D.

Internal Medicine · Raleigh, NC

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)
100%Service-mix similarityView profile →

Saeid Mirzai, DO

Internal Medicine · Winston Salem, NC

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)
100%Service-mix similarityView profile →

Emelia Animah Annoh, MD

Internal Medicine · Charlotte, NC

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)
100%Service-mix similarityView profile →

Andrew Christian Core, MD

Internal Medicine · Raleigh, NC

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)
100%Service-mix similarityView profile →

Vishal Patel, M.D.

Internal Medicine · Greensboro, NC

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)
100%Service-mix similarityView profile →

Elizabeth Hope Cain Glowacki

Internal Medicine · Durham, NC

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)
100%Service-mix similarityView profile →

Courtney Lynn Dominguez, MD

Internal Medicine · Wilmington, NC

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)
100%Service-mix similarityView profile →

Osaguona Osa, MD

Internal Medicine · Shelby, NC

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)
91%Service-mix similarityView profile →

Emad Fouad Massoud Malak, M.D.

Internal Medicine · Gastonia, NC

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)
85%Service-mix similarityView profile →

Joshua Ruiz, D.O.

Internal Medicine · Lumberton, NC

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)
85%Service-mix similarityView profile →

Michelle Marie Santana, D.O.

Internal Medicine · Durham, NC

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)
84%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.