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Compare the published Medicare service mix of Pierre V Mayer, M.D. with clinicians in the same registry specialty: Psychiatry.

LAWRENCE, MA · 10 milesEdit location
Within 10 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 · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Katherine G Ruiz-Mellott, M.D.,MPH

Psychiatry · Haverhill, MA

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 straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Hospital discharge day management, 30 minutes or less (99238)
90%Service-mix similarity~7.3 milesView profile →

Anthony H Vagnucci, M.D.

Psychiatry · Tewksbury, MA

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)
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
86%Service-mix similarity~7.6 milesView profile →

Kai Spring Hayes, MD

Psychiatry · Haverhill, MA

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 straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
  • Hospital discharge day management, 30 minutes or less (99238)
85%Service-mix similarity~7.3 milesView profile →

Chitra Malur, M.D.

Psychiatry · Haverhill, MA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)
50%Service-mix similarity~7.3 milesView profile →

Jason Jones, MD

Psychiatry · Methuen, MA

Shared published services
1 shared services · view billing descriptions
  • Psychiatric diagnostic evaluation with medical services (90792)
33%Service-mix similarity~1.9 milesView profile →

Maria Del Carmen Arcia, M.D.

Psychiatry · Methuen, MA

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)
31%Service-mix similarity~1.9 milesView profile →

Karina Tamir, D.O.

Psychiatry · Salem, NH

Shared published services
1 shared services · view billing descriptions
  • Psychiatric diagnostic evaluation with medical services (90792)
18%Service-mix similarity~6.2 milesView profile →

Ernesto Zilberberg, MD

Psychiatry · North Andover, MA

Shared published services
1 shared services · view billing descriptions
  • Psychiatric diagnostic evaluation with medical services (90792)
8%Service-mix similarity~3.2 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.