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Compare the published Medicare service mix of Sheldon Greenberg, MD with clinicians in the same registry specialty: Infectious Disease · Nephrology (CMS).

BROOKLYN, NY · Exact areaEdit location

2024 published service data · 73 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Elizabeth Sarah Hammer, MD

Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
83%Service-mix similarityView profile →

Ahmad Waseef, MD

Internal Medicine · Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
81%Service-mix similarityView profile →

Ilya Shneyderman

Internal Medicine · Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
80%Service-mix similarityView profile →

Lawrence E Stam, M.D.

Internal Medicine · Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
80%Service-mix similarityView profile →

Francis C Ramos, MD

Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
78%Service-mix similarityView profile →

Youngjun Park, MD

Internal Medicine · Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
77%Service-mix similarityView profile →

Oluwatoyin Akanbi, MD

Nephrology (CMS) · Brooklyn, NY

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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
74%Service-mix similarityView profile →

Priyanka Singh, M.D

Internal Medicine · Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
73%Service-mix similarityView profile →

Fekade Tefera, M.D.

Internal Medicine · Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
72%Service-mix similarityView profile →

Elena Frolova

Nephrology (CMS) · Brooklyn, NY

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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
71%Service-mix similarityView profile →

Puneet Bedi, M.D.

Nephrology (CMS) · Brooklyn, NY

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)
  • Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)
71%Service-mix similarityView profile →

Serge Balmir, D.O.

Internal Medicine · Nephrology (CMS) · Brooklyn, NY

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)
  • Dialysis services, 2-3 physician visits per month (20 years or older) (90961)
70%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.