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Compare the published Medicare service mix of Charles Benjamin Carter, M.D. with clinicians in the same registry specialty: Nephrology (CMS).

TUCSON, AZ · Exact areaEdit location

2024 published service data · 38 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Amy Nicole Sussman, MD

Nephrology (CMS) · Tucson, AZ

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 high level of medical decision making, if using time, 40 minutes or more (99215)
66%Service-mix similarityView profile →

Cary Belen, D.O.

Nephrology (CMS) · Tucson, AZ

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)
  • 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 high level of medical decision making, if using time, 40 minutes or more (99215)
62%Service-mix similarityView profile →

Aneesha Anand Shetty, M.D., M.P.H.

Internal Medicine · Nephrology (CMS) · Tucson, AZ

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 high level of medical decision making, if using time, 40 minutes or more (99215)
61%Service-mix similarityView profile →

Zeeshan Perveze, M.D.

Nephrology (CMS) · Tucson, AZ

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)
  • 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 high level of medical decision making, if using time, 40 minutes or more (99215)
55%Service-mix similarityView profile →

Frank C Brosius, MD

Internal Medicine · Nephrology (CMS) · Tucson, AZ

Shared published services
1 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)
54%Service-mix similarityView profile →

Elvira Gonzalez Negrete, MD

Nephrology (CMS) · Tucson, AZ

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 high level of medical decision making, if using time, 40 minutes or more (99215)
49%Service-mix similarityView profile →

Sourabh Kharait, M.D

Internal Medicine · Nephrology (CMS) · Tucson, AZ

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 high level of medical decision making, if using time, 40 minutes or more (99215)
49%Service-mix similarityView profile →

David Whittman, M.D., M.P.H.

Nephrology (CMS) · Tucson, AZ

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 high level of medical decision making, if using time, 40 minutes or more (99215)
48%Service-mix similarityView profile →

Ryan Christopher Wong, M.D.

Nephrology (CMS) · Tucson, AZ

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)
48%Service-mix similarityView profile →

Venkatesh Kumar Ariyamuthu, MD

Internal Medicine · Nephrology (CMS) · Tucson, AZ

Shared published services
1 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)
46%Service-mix similarityView profile →

Anjuman Ara Howlader, M.D.

Nephrology (CMS) · Tucson, AZ

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 high level of medical decision making, if using time, 40 minutes or more (99215)
46%Service-mix similarityView profile →

Jamil Ahmed, M.D.

Nephrology (CMS) · Tucson, AZ

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 high level of medical decision making, if using time, 40 minutes or more (99215)
46%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.