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Compare the published Medicare service mix of Christine Leddy Greenia, M.D. with clinicians in the same registry specialty: Psychiatry.

NEWPORT, RI · 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 · 116 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Matthew Bradley, MD

Psychiatry · Providence, RI

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Hospital discharge day management, more than 30 minutes (99239)
99%Service-mix similarity~24.0 milesView profile →

Ammar El Sara, MD

Psychiatry · Providence, RI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, more than 30 minutes (99239)
79%Service-mix similarity~24.0 milesView profile →

Jared Au Yeung, MD

Psychiatry · Providence, RI

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Hospital discharge day management, more than 30 minutes (99239)
77%Service-mix similarity~23.2 milesView profile →

Raja Ramis Akhtar, MD

Psychiatry · Providence, RI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
76%Service-mix similarity~24.0 milesView profile →

Jennifer K Trayner, MD

Psychiatry · Providence, RI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
76%Service-mix similarity~23.2 milesView profile →

Alan Tseng, MD, PHD

Psychiatry · Cranston, RI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
76%Service-mix similarity~20.8 milesView profile →

William Kyros, MD

Psychiatry · Warwick, RI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
76%Service-mix similarity~16.0 milesView profile →

Jennifer Judd Nadeau, M.D.

Psychiatry · Providence, RI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
76%Service-mix similarity~23.2 milesView profile →

Meesha Ahuja, MD

Psychiatry · Providence, RI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
76%Service-mix similarity~24.0 milesView profile →

Lucille Bess Mehring, M.D.

Psychiatry · Providence, RI

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
76%Service-mix similarity~23.2 milesView profile →

Sarah E. Kramer, M.D.

Psychiatry · Providence, RI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, more than 30 minutes (99239)
74%Service-mix similarity~24.0 milesView profile →

Jesse Eli Moskowitz, MD

Psychiatry · Providence, RI

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Hospital discharge day management, more than 30 minutes (99239)
73%Service-mix similarity~24.0 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.