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Compare the published Medicare service mix of Nichole Gallegos Zehnder, MD with clinicians in the same registry specialty: Internal Medicine (CMS).

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 30 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Cosette Dechant Champion, MD

Specialty details in registry · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
100%Service-mix similarityView profile →

Charlotte Hope Albinson, MD

Emergency Medicine (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
86%Service-mix similarityView profile →

Catherine Ann Hermann, MD

Internal Medicine (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
85%Service-mix similarityView profile →

Millicent Leigh Horn, MD

Specialty details in registry · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
82%Service-mix similarityView profile →

Nickole Hoffman Forget, MD

Hospitalist · Internal Medicine (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
80%Service-mix similarityView profile →

Katherine E Henderson, MD

Internal Medicine (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
80%Service-mix similarityView profile →

David Michael Vermette, MD

Hospitalist · Internal Medicine · Pediatric Medicine (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
79%Service-mix similarityView profile →

Daniel Desta Bekele, MD

General Practice (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
75%Service-mix similarityView profile →

Joshua Michael Mendoza, MD

Specialty details in registry · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
71%Service-mix similarityView profile →

Dominique Leah Cosco, MD

Internal Medicine (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
69%Service-mix similarityView profile →

Thomas Michael Ciesielski, MD

Internal Medicine (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
69%Service-mix similarityView profile →

Laura Ann Colletti, MD

Specialty details in registry · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
69%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.