A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Tiffany Deanna Johnson, LPC with clinicians in the same registry specialty: Mental Health Counselor (CMS).

COLUMBIA, SC · Exact areaEdit location

2024 published service data · 8 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Darrel Gene Shaver, PH.D., LPC

Mental Health Counselor (CMS) · Columbia, SC

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

Joanne Marie Schrock, M.ED, MS, BCBA

Mental Health Counselor (CMS) · Columbia, SC

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

Ben A Boatwright, LPC

Mental Health Counselor (CMS) · Columbia, SC

Shared published services
1 shared services · view billing descriptions
  • Psychiatric diagnostic evaluation (90791)
53%Service-mix similarityView profile →

Glenn Peter Zaepfel, PH.D

Clinical Psychologist (CMS) · Columbia, SC

Shared published services
1 shared services · view billing descriptions
  • Psychotherapy, 45 minutes (90834)
38%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.