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Compare the published Medicare service mix of Ronelle R Langley, PHD with clinicians in the same registry specialty: Psychologist.

IA · Exact areaEdit location

2024 published service data · 23 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Valerie Judith Keffala, PH.D.

Psychologist · Iowa City, IA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychotherapy, 30 minutes (90832)
  • Psychotherapy, 1 hour (90837)
96%Service-mix similarityView profile →

Nicole Hochhausen Keedy, PHD

Psychologist · Dubuque, IA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychotherapy, 30 minutes (90832)
  • Psychotherapy, 1 hour (90837)
94%Service-mix similarityView profile →

Collin Andrew Lodico, PH.D.

Psychologist · Bettendorf, IA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychotherapy, 1 hour (90837)
  • Psychiatric diagnostic evaluation (90791)
82%Service-mix similarityView profile →

Kathleen Marie Laurin, PHD, LP

Psychologist · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychotherapy, 1 hour (90837)
  • Psychiatric diagnostic evaluation (90791)
80%Service-mix similarityView profile →

Dianne Sylvia Alber, ED.D.

Psychologist · Des Moines, IA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychotherapy, 30 minutes (90832)
78%Service-mix similarityView profile →

Robin R. Peterson, PSY.D

Psychologist · Bettendorf, IA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychotherapy, 1 hour (90837)
76%Service-mix similarityView profile →

Mark Minear, PHD

Psychologist · Marshalltown, IA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychotherapy, 1 hour (90837)
76%Service-mix similarityView profile →

Stephen J. Frommelt, PH.D.

Psychologist · Dubuque, IA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychotherapy, 1 hour (90837)
75%Service-mix similarityView profile →

Gregory Leo Gullickson, PH D

Psychologist · Iowa City, IA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
65%Service-mix similarityView profile →

Daniel Larson, ED.D.

Psychologist · Davenport, IA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
57%Service-mix similarityView profile →

George M. Harper, ED.D.

Psychologist · Independence, IA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
57%Service-mix similarityView profile →

Janet Marie Drew, PH.D.

Psychologist · Clinton, IA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
57%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.