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Compare the published Medicare service mix of Ann Elizabeth Gage, M.D. with clinicians in the same registry specialty: Critical Care (Intensivists) · Internal Medicine · Interventional Cardiology (CMS).

NASHVILLE, TN · Exact areaEdit location

2024 published service data · 13 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David Steiger, M.D.

Critical Care (Intensivists) · Internal Medicine (CMS) · Nashville, TN

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Critical care, each additional 30 minutes (99292)
49%Service-mix similarityView profile →

Robert Patrick Castiglia, M.D.

Internal Medicine (CMS) · Nashville, TN

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Critical care, each additional 30 minutes (99292)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
43%Service-mix similarityView profile →

Brett Charles Norman, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Nashville, TN

Shared published services
3 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • 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)
42%Service-mix similarityView profile →

Angelo E. Canonico, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Nashville, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
36%Service-mix similarityView profile →

Alberto Gonzalez-Bernal, MD

Internal Medicine · Pulmonary Disease (CMS) · Nashville, TN

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
33%Service-mix similarityView profile →

Vern Eric Kerchberger, M.D.

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Nashville, TN

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
31%Service-mix similarityView profile →

Douglas Hsu

Internal Medicine (CMS) · Nashville, TN

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
29%Service-mix similarityView profile →

Joyce Alencherril Williams, DO

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Nashville, TN

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
29%Service-mix similarityView profile →

Shannon Niedermeyer, MD

Pulmonary Disease (CMS) · Nashville, TN

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
29%Service-mix similarityView profile →

Todd Rice, MD

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Nashville, TN

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
29%Service-mix similarityView profile →

Eugene Wesley Ely, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Nashville, TN

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
29%Service-mix similarityView profile →

Jonathan Dale Casey, M.D.

Internal Medicine · Pulmonary Disease (CMS) · Nashville, TN

Shared published services
1 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
29%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.