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Compare the published Medicare service mix of Ghassan Al-Sabbagh, MD with clinicians in the same registry specialty: Gastroenterology · Internal Medicine (CMS).

NC · Exact areaEdit location

2024 published service data · 482 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ruhin Yuridullah

Gastroenterology (CMS) · New Bern, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
93%Service-mix similarityView profile →

Naveen Vymutt Narahari, MD

Gastroenterology · Internal Medicine (CMS) · Raleigh, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
90%Service-mix similarityView profile →

Henry Terrell Mixon, MD

Gastroenterology · Internal Medicine (CMS) · Winston-Salem, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
86%Service-mix similarityView profile →

Rajat Chander, M.D.

Gastroenterology (CMS) · Cary, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
86%Service-mix similarityView profile →

Ruth Mokeba Ekangaki, MD

Gastroenterology (CMS) · Raleigh, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
86%Service-mix similarityView profile →

Daniel William Murphy, M.D.

Gastroenterology · Internal Medicine (CMS) · Winston Salem, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
85%Service-mix similarityView profile →

Julia Wai-Chi Tang, MD

Gastroenterology · Internal Medicine (CMS) · 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
85%Service-mix similarityView profile →

Gregory Locklear, M.D.

Gastroenterology · Internal Medicine (CMS) · Lumberton, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
85%Service-mix similarityView profile →

Claire Hamman Vreeland, D.O.

Gastroenterology (CMS) · Greensboro, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
84%Service-mix similarityView profile →

Zachary Peter Spiritos, M.D., M.P.H.

Specialty details in registry · Cary, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
84%Service-mix similarityView profile →

Venkatesh Lakshman, MD

Gastroenterology (CMS) · Wilson, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
83%Service-mix similarityView profile →

Kenneth Richard Kohagen, MD

Gastroenterology (CMS) · Raleigh, 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)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)
83%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.