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Compare the published Medicare service mix of Chidao L Nguyen, DO with clinicians in the same registry specialty: Internal Medicine (CMS).

WESTMINSTER, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 84 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David Deguire Chan, D.O.

Hospitalist · Internal Medicine (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Critical care, first 30-74 minutes (99291)
88%Service-mix similarity~4.2 milesView profile →

Iris Gluzman, MD

Internal Medicine (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Critical care, first 30-74 minutes (99291)
86%Service-mix similarity~4.2 milesView profile →

Mohammad Umar Farukhi, M.D.

Internal Medicine (CMS) · Anaheim, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Critical care, first 30-74 minutes (99291)
85%Service-mix similarity~6.5 milesView profile →

Sara H Ghazi, DO

Internal Medicine (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Critical care, first 30-74 minutes (99291)
85%Service-mix similarity~4.2 milesView profile →

Yu-Nan Hsu, D.O

Internal Medicine (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Critical care, first 30-74 minutes (99291)
84%Service-mix similarity~4.2 milesView profile →

Ky Trong Vu, M.D.

Internal Medicine (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Critical care, first 30-74 minutes (99291)
83%Service-mix similarity~4.2 milesView profile →

Edvin Dilanchiyan, MD

Hospitalist · Internal Medicine (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Critical care, first 30-74 minutes (99291)
80%Service-mix similarity~7.3 milesView profile →

Vina Nguyen, M. D.

Hospitalist · Internal Medicine (CMS) · Fountain Valley, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
71%Service-mix similarity~4.2 milesView profile →

Lawrence Kai Yiu Chau, DO

Internal Medicine (CMS) · Anaheim, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
71%Service-mix similarity~6.5 milesView profile →

Shaiquel Arefin Jilani, M.D.

Internal Medicine (CMS) · Anaheim, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
67%Service-mix similarity~4.6 milesView profile →

Reza Rasouli, MD

Infectious Disease · Internal Medicine (CMS) · Costa Mesa, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Critical care, first 30-74 minutes (99291)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
67%Service-mix similarity~7.4 milesView profile →

Joel Quijano, M.D.

Hospitalist (CMS) · La Palma, CA

Shared published services
3 shared services · view billing descriptions
  • 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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
67%Service-mix similarity~6.9 milesView 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 approximate distance 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.