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

WEST HILLS, CA · Exact areaEdit location

2024 published service data · 23 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Joseph Zibulewsky, MD

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
95%Service-mix similarityView profile →

Ethan Qilong Han, M.D.

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
94%Service-mix similarityView profile →

Alan L. Kuban, M.D.

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
93%Service-mix similarityView profile →

Allison Joy Santi, M.D.

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
93%Service-mix similarityView profile →

Korosh Borhani, D.O.

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
92%Service-mix similarityView profile →

Aaron Jameson Mueller, MD

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
92%Service-mix similarityView profile →

Helena M Horak, M.D.

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
92%Service-mix similarityView profile →

Mihael Plantak, MD

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Emergency department visit with low level of medical decision making (99283)
89%Service-mix similarityView profile →

Shahrokh Kohanim

Emergency Medicine · West Hills, CA

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

Jessica Shane Thomas, M.D.

Emergency Medicine · West Hills, CA

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

Kiarash Rowhanian, M.D.

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Critical care, first 30-74 minutes (99291)
84%Service-mix similarityView profile →

Jaskirat Singh Dhanoa, MD

Emergency Medicine · West Hills, CA

Shared published services
3 shared services · view billing descriptions
  • Emergency department visit with high level of medical decision making (99285)
  • Emergency department visit with moderate level of medical decision making (99284)
  • Critical care, first 30-74 minutes (99291)
79%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.