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Compare the published Medicare service mix of Megan C. Merriwether, PH.D., CDP with clinicians in the same registry specialty: Clinical Psychologist (CMS).

WA · Exact areaEdit location

2024 published service data · 104 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David Opollo Ross, PSYD

Clinical Psychologist (CMS) · Vancouver, WA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 30 minutes (90832)
  • Psychotherapy, 45 minutes (90834)
99%Service-mix similarityView profile →

Kristen Brewer Sherman

Clinical Psychologist (CMS) · Kirkland, WA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 30 minutes (90832)
  • Psychotherapy, 45 minutes (90834)
98%Service-mix similarityView profile →

Sara S Chan, PSYD

Clinical Psychologist (CMS) · Seattle, WA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
89%Service-mix similarityView profile →

Bethany Danielle Pester, PHD

Clinical Psychologist (CMS) · Seattle, WA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
89%Service-mix similarityView profile →

Wren Yoder, PHD

Clinical Psychologist (CMS) · Seattle, WA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 30 minutes (90832)
  • Psychotherapy, 45 minutes (90834)
86%Service-mix similarityView profile →

Laura Anne Farley, PSY.D.

Clinical Psychologist (CMS) · Vancouver, WA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
85%Service-mix similarityView profile →

Daniel Allan Pratt, PSY.D.

Clinical Psychologist (CMS) · Lakewood, WA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 45 minutes (90834)
81%Service-mix similarityView profile →

Barbara S Mccann

Clinical Psychologist (CMS) · Seattle, WA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 30 minutes (90832)
81%Service-mix similarityView profile →

Sonja Seltzer Sackman, PHD

Clinical Psychologist (CMS) · Vashon, WA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychotherapy, 45 minutes (90834)
80%Service-mix similarityView profile →

Carolyn Sims Stern, PHD

Specialty details in registry · Ellensburg, WA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychiatric diagnostic evaluation (90791)
78%Service-mix similarityView profile →

Tom M Dooley, PSYD

Clinical Psychologist (CMS) · Vancouver, WA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychiatric diagnostic evaluation (90791)
78%Service-mix similarityView profile →

Ryan W Coon, PSYD

Clinical Psychologist (CMS) · Tacoma, WA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 1 hour (90837)
  • Psychiatric diagnostic evaluation (90791)
78%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.