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Compare the published Medicare service mix of Brett Hansen, M.D. with clinicians in the same registry specialty: Emergency Medicine.

LAS VEGAS, NV · Exact areaEdit location

2024 published service data · 217 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Hayden Jacob Maag, DO

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
95%Service-mix similarityView profile →

Charles Lin, M.D.

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
91%Service-mix similarityView profile →

Theddy Richard Blanc

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
90%Service-mix similarityView profile →

Matthew Anthony Cadelago, DO

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
90%Service-mix similarityView profile →

Frank Cheng-Chi Lee, DO

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
90%Service-mix similarityView profile →

Suzanne Marie Roozendaal, D.O.

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
90%Service-mix similarityView profile →

Jason R Grabert, MD

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
88%Service-mix similarityView profile →

Matthew Adam Loptien

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
88%Service-mix similarityView profile →

Tyler B Miller, DO

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
87%Service-mix similarityView profile →

Brent Castle, D.O.

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
87%Service-mix similarityView profile →

Zachary Bernard Tillett, MD

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
86%Service-mix similarityView profile →

Diana Oganesyan, MD

Emergency Medicine · Las Vegas, NV

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Critical care, first 30-74 minutes (99291)
  • Emergency department visit with moderate level of medical decision making (99284)
85%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.