A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Lydia Zarrella-Timmerman, PSY.D. with clinicians in the same registry specialty: Clinical Psychologist (CMS).

NJ · Exact areaEdit location

2024 published service data · 202 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Patricia Ann Tistan, PH.D.

Clinical Psychologist (CMS) · Lincroft, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%Service-mix similarityView profile →

Elissa Kay Koplik, PH.D.

Clinical Psychologist (CMS) · Milltown, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%Service-mix similarityView profile →

Leslie Ruth Gilbert, PHD

Clinical Psychologist (CMS) · Wayne, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%Service-mix similarityView profile →

Craig W Pearl, PSY D

Clinical Psychologist (CMS) · Mount Laurel, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%Service-mix similarityView profile →

Linda Terry Mack, PSY.D.

Clinical Psychologist (CMS) · Hackensack, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%Service-mix similarityView profile →

Amy L Altenhaus, PH.D

Clinical Psychologist (CMS) · Freehold, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%Service-mix similarityView profile →

Charles D Sullivan, PHD

Clinical Psychologist (CMS) · Totowa, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%Service-mix similarityView profile →

Theresa Rose Wright, PH.D

Clinical Psychologist (CMS) · Mount Laurel, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%Service-mix similarityView profile →

Jo-Ann M. Cannon, PH.D.

Clinical Psychologist (CMS) · Turnersville, NJ

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
100%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.