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Similar work.
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Compare the published Medicare service mix of Rhonda L. Callison, PH.D. with clinicians in the same registry specialty: Clinical Psychologist (CMS).

IA · Exact areaEdit location

2024 published service data · 27 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Sapna Ram Dixon

Clinical Psychologist (CMS) · Des Moines, IA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
90%Service-mix similarityView profile →

Brian James Steiner, PSY.D.

Clinical Psychologist (CMS) · Marshalltown, IA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
90%Service-mix similarityView profile →

Phyllis Martin, PHD

Clinical Psychologist (CMS) · Marshalltown, IA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
90%Service-mix similarityView profile →

Jamie A Ryder, PHD

Clinical Psychologist (CMS) · Council Bluffs, IA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
72%Service-mix similarityView profile →

Melanie K Porter, PSY.D

Clinical Psychologist (CMS) · Fort Dodge, IA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
62%Service-mix similarityView profile →

Angela Ardis Peters, PH.D.

Clinical Psychologist (CMS) · Sioux City, IA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
56%Service-mix similarityView profile →

Aaron Baker, PHD

Clinical Psychologist (CMS) · Sioux City, IA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
52%Service-mix similarityView profile →

Jody Jones, PHD

Psychiatry (CMS) · Iowa City, IA

Shared published services
1 shared services · view billing descriptions
  • Psychiatric diagnostic evaluation (90791)
44%Service-mix similarityView profile →

Sunde Michele Nesbit, PH.D.

Specialty details in registry · Ames, IA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
41%Service-mix similarityView profile →

Benjamin Ashley Tallman, PHD

Specialty details in registry · Cedar Rapids, IA

Shared published services
1 shared services · view billing descriptions
  • Psychiatric diagnostic evaluation (90791)
23%Service-mix similarityView profile →

Jessica Brooke Virzi, PSY.D.

Clinical Psychologist (CMS) · Ames, IA

Shared published services
1 shared services · view billing descriptions
  • Psychiatric diagnostic evaluation (90791)
22%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.