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Compare the published Medicare service mix of Christopher J Ackerman, MD with clinicians in the same registry specialty: Internal Medicine.

LAWRENCEVILLE, VA · 25 milesEdit location
Within 25 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 12 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Tochukwu Nwamaka Agbata, M.D.

Internal Medicine · Raonoke Rapids, NC

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
36%Service-mix similarity~21.4 milesView profile →

Raghu Rudraraju, M.D.

Internal Medicine · South Hill, VA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
30%Service-mix similarity~18.9 milesView profile →

Ouassim Derbal, MD

Internal Medicine · Roanoke Rapids, NC

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Hospital discharge day management, more than 30 minutes (99239)
29%Service-mix similarity~21.4 milesView profile →

Philip Odartei Lamptey, MD

Internal Medicine · Roanoke Rapids, NC

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
28%Service-mix similarity~21.4 milesView profile →

Daqing Guo, M.D

Internal Medicine · Roanoke Rapids, NC

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)
23%Service-mix similarity~21.4 milesView profile →

Michael E Anigbogu, M.D.

Internal Medicine · Roanoke Rapids, NC

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
22%Service-mix similarity~21.4 milesView profile →

Mario Grazia Fiorilli, MD

Internal Medicine · Roanoke Rapids, NC

Shared published services
1 shared services · view billing descriptions
  • Administration of influenza virus vaccine (G0008)
7%Service-mix similarity~21.4 milesView profile →

Chinedu Christian Onuorah, M.D,

Internal Medicine · Roanoke Rapids, NC

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
6%Service-mix similarity~21.4 milesView profile →

Jonathan Juturu Jack, MD

Internal Medicine · Roanoke Rapids, NC

Shared published services
1 shared services · view billing descriptions
  • Automated urinalysis test (81003)
6%Service-mix similarity~21.4 milesView 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 approximate distance 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.