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Compare the published Medicare service mix of Maria Diana Vornicu, M.D. with clinicians in the same registry specialty: Internal Medicine · Nephrology (CMS).

LAS VEGAS, NV · Exact areaEdit location

2024 published service data · 71 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Baishali Nair, M.D.

Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Home dialysis services per month (20 years or older) (90966)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
87%Service-mix similarityView profile →

Mark Vishnepolsky, M.D.

Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Home dialysis services per month (20 years or older) (90966)
87%Service-mix similarityView profile →

Teena Tandon, M.D.

Internal Medicine · Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Home dialysis services per month (20 years or older) (90966)
85%Service-mix similarityView profile →

Jeffrey Y Ryu, M.D.

Internal Medicine · Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
84%Service-mix similarityView profile →

David A Makil, M.D.

Internal Medicine · Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
84%Service-mix similarityView profile →

Gene Ong, M.D.

Internal Medicine · Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Home dialysis services per month (20 years or older) (90966)
83%Service-mix similarityView profile →

Cristy Robertson, MD

Internal Medicine · Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Home dialysis services per month (20 years or older) (90966)
82%Service-mix similarityView profile →

Bindu Khanna, MD

Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
81%Service-mix similarityView profile →

Arshi A. Quadeer, MD

Internal Medicine · Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
80%Service-mix similarityView profile →

William Joseph Kennedy, M.D.

Internal Medicine · Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Home dialysis services per month (20 years or older) (90966)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
80%Service-mix similarityView profile →

Hassan Elsir Osman, M.D.

Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
80%Service-mix similarityView profile →

Jay Koe Chu, M.D.

Nephrology (CMS) · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
80%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.