A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Charles Holtz with clinicians in the same registry specialty: Clinical Social Worker (CMS).

PA · Exact areaEdit location

2024 published service data · 272 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David N Seidman, ED.D.

Clinical Psychologist (CMS) · Elkins Park, PA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
100%Service-mix similarityView profile →

Francis M. Angelella, PSY.D.

Clinical Psychologist (CMS) · Exeter, PA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
100%Service-mix similarityView profile →

Anthony Joseph Mustello, PH.D.

Clinical Psychologist (CMS) · Newtown, PA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
100%Service-mix similarityView profile →

Margaret Sayers, PH.D.

Clinical Psychologist (CMS) · Southampton, PA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
99%Service-mix similarityView profile →

Linda Montagna

Clinical Psychologist (CMS) · Pittsburgh, PA

Shared published services
2 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
  • Psychiatric diagnostic evaluation (90791)
99%Service-mix similarityView profile →

Fred B Mckinney, PH.D.

Clinical Psychologist (CMS) · Springfield, PA

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

David Renjilian, PH.D.

Clinical Psychologist (CMS) · Clarks Summit, PA

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

Sandra Lynn Duemmler, PH.D.

Clinical Psychologist (CMS) · West Chester, PA

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

James Coane, PSY.D.

Clinical Psychologist (CMS) · Newtown, PA

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

Judith Saltzberg, PH.D.

Clinical Psychologist (CMS) · Wynnewood, PA

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

Kathleen Mcdonald, PSYD

Clinical Psychologist (CMS) · Kennett Square, PA

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
86%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.