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Compare the published Medicare service mix of John Callison, MD with clinicians in the same registry specialty: Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS).

KNOXVILLE, TN · Exact areaEdit location

2024 published service data · 50 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Benjamin Thomas Bevill, M.D.

Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
73%Service-mix similarityView profile →

Enambir Singh Josan, M.D.

Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
73%Service-mix similarityView profile →

Paul Branca, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • Test to measure expiratory airflow and volume (94010)
66%Service-mix similarityView profile →

Rachel Guthrie Samuel, DO

Internal Medicine · Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
58%Service-mix similarityView profile →

Shannon L Byrd, MD

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

Shared published services
3 shared services · view billing descriptions
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Test to measure expiratory airflow and volume (94010)
  • Biopsy of lobe of lung using an endoscope, 1 lobe (31628)
58%Service-mix similarityView profile →

Jason Wesley Green, D.O.

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
57%Service-mix similarityView profile →

Isaac Noble Biney, MD

Internal Medicine · Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
56%Service-mix similarityView profile →

Varun Shah

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

Shared published services
3 shared services · view billing descriptions
  • Test to measure expiratory airflow and volume (94010)
  • Biopsy of lobe of lung using an endoscope, 1 lobe (31628)
  • Exam of lung airways with diagnostic or therapeutic procedure on growths using an endoscope and ultrasound (31654)
55%Service-mix similarityView profile →

Arseniy V. Tsapenko, M.D., D.O

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • Test to measure expiratory airflow and volume (94010)
54%Service-mix similarityView profile →

Spencer Pugh, M.D.

Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
54%Service-mix similarityView profile →

Matthew Alan Hicks, D.O.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
53%Service-mix similarityView profile →

Elise Emery Schriver, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Knoxville, 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 50 minutes (99233)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
53%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.