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Compare the published Medicare service mix of Shahid Jalil Hayat, M.D. with clinicians in the same registry specialty: Critical Care (Intensivists) · Pulmonary Disease (CMS).

ORANGE, CA · Exact areaEdit location

2024 published service data · 18 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Desmond Adrian Sjauwfoekloy, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Orange, CA

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)
  • Hospital discharge day management, more than 30 minutes (99239)
88%Service-mix similarityView profile →

Reza Mina-Araghi, MD

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Orange, CA

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)
  • Hospital discharge day management, more than 30 minutes (99239)
88%Service-mix similarityView profile →

James Henry Roum, MD

Internal Medicine · Pulmonary Disease (CMS) · Orange, CA

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)
  • Emergent insertion of breathing tube into windpipe using an endoscope (31500)
87%Service-mix similarityView profile →

Joseph C Preston, M.D.

Critical Care (Intensivists) · Internal Medicine (CMS) · Orange, CA

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
87%Service-mix similarityView profile →

Amir K. Ghiassi, M.D.

Critical Care (Intensivists) (CMS) · Orange, CA

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
85%Service-mix similarityView profile →

Peter Roy Smethurst, MD

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Orange, CA

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)
83%Service-mix similarityView profile →

Mark Allen Rosen, MD

Internal Medicine · Pulmonary Disease (CMS) · Orange, CA

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 35 minutes (99232)
76%Service-mix similarityView profile →

Nikita Desai

Critical Care (Intensivists) · Emergency Medicine (CMS) · Orange, CA

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 35 minutes (99232)
60%Service-mix similarityView profile →

Mark E Wylam, M.D.

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Orange, CA

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
57%Service-mix similarityView profile →

Bassam Yaghmour, M.D.

Critical Care (Intensivists) · Internal Medicine · Pulmonary Disease (CMS) · Orange, CA

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)
45%Service-mix similarityView profile →

Dinora Beatriz Chinchilla, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Orange, CA

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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
44%Service-mix similarityView profile →

Lillian Chow, MD

Critical Care (Intensivists) · Pulmonary Disease (CMS) · Orange, CA

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)
43%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.