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Compare the published Medicare service mix of John Vassaur, M.D. with clinicians in the same registry specialty: Pulmonary Disease (CMS).

DALLAS, TX · Exact areaEdit location

2024 published service data · 101 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Karen Shen, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Dallas, TX

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
100%Service-mix similarityView profile →

Shibu Thomas, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Dallas, TX

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
100%Service-mix similarityView profile →

Zachary Scott Dreyfuss, M.D.

Critical Care (Intensivists) · Internal Medicine (CMS) · Dallas, TX

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
99%Service-mix similarityView profile →

Robert W Baird, M.D.

Pulmonary Disease (CMS) · Dallas, TX

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
98%Service-mix similarityView profile →

Valentino Fj Fernandes, M.D.

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Dallas, TX

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
95%Service-mix similarityView profile →

Raghu Krishnamurthy, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Dallas, TX

Shared published services
2 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)
94%Service-mix similarityView profile →

Jacqueline Nicole Horst, M.D.

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Dallas, TX

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
94%Service-mix similarityView profile →

Jonathan Ioanitescu, MD

Internal Medicine · Pulmonary Disease (CMS) · Dallas, TX

Shared published services
2 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)
93%Service-mix similarityView profile →

Christine Grace Manthuruthil, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Dallas, TX

Shared published services
2 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)
93%Service-mix similarityView profile →

Erin Tuttle, MD

Pulmonary Disease (CMS) · Dallas, TX

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
91%Service-mix similarityView profile →

Catherine Chen, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Dallas, TX

Shared published services
2 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)
88%Service-mix similarityView profile →

Ariel Marcelo Modrykamien, M.D.

Critical Care (Intensivists) (CMS) · Dallas, TX

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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
87%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.