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Compare the published Medicare service mix of Timothy Kenneth Ackerman, MD with clinicians in the same registry specialty: Hospitalist · Internal Medicine · Pediatric Medicine (CMS).

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 241 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Hannah Marie Markova, MD

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

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
100%Service-mix similarityView profile →

Caroline Holleck Kahle, MD

Hospitalist (CMS) · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
85%Service-mix similarityView profile →

Marwa Mustafa Mohammed Ahmed, MD

Specialty details in registry · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
84%Service-mix similarityView profile →

Gizem Kaya, MD

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

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
84%Service-mix similarityView profile →

Sana Ali Pirzada, MD

Specialty details in registry · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
84%Service-mix similarityView profile →

Robert J Mahoney, MD

Internal Medicine (CMS) · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
83%Service-mix similarityView profile →

Justin Purdy, M.D.

Hospitalist (CMS) · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
83%Service-mix similarityView profile →

Benjamin Louis Hoemann, MD

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

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
82%Service-mix similarityView profile →

Michael Yun Lin, MD

Internal Medicine (CMS) · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
82%Service-mix similarityView profile →

Dennis Tian-Shu Chang, MD

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

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
82%Service-mix similarityView profile →

Francis Erik Fu-Chuan Loh, MD

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

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
82%Service-mix similarityView profile →

Adam James Fritz, M.D.

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

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
82%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.