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Compare the published Medicare service mix of Melissa Siew, M.D. with clinicians in the same registry specialty: Internal Medicine.

WESTMINSTER, CA · Exact areaEdit location

2024 published service data · 31 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Hong P Duong, MD

Internal Medicine · Westminster, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • 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)
59%Service-mix similarityView profile →

Vivian Nguyen, MD

Internal Medicine · Westminster, 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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Hospital discharge day management, more than 30 minutes (99239)
45%Service-mix similarityView profile →

Meera Sohail, M.D

Internal Medicine · Westminster, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • 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)
44%Service-mix similarityView profile →

Hai Hoang Pham, M.D.

Internal Medicine · Westminster, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)
  • 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)
39%Service-mix similarityView profile →

Joshua Peloquin, DO

Internal Medicine · Westminster, CA

Shared published services
2 shared services · view billing descriptions
  • 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)
31%Service-mix similarityView profile →

Dean Ba Ngo, MD

Internal Medicine · Westminster, CA

Shared published services
3 shared services · view billing descriptions
  • Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Advance care planning, first 30 minutes (99497)
27%Service-mix similarityView profile →

Khaled Chan, MD

Internal Medicine · Westminster, 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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)
26%Service-mix similarityView profile →

Vuong Huu Nguyen, M.D.

Internal Medicine · Westminster, 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)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Hospital discharge day management, more than 30 minutes (99239)
22%Service-mix similarityView profile →

Anh Thu Thi Tran, MD

Internal Medicine · Westminster, CA

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
7%Service-mix similarityView profile →

Chinh Mai, MD

Internal Medicine · Westminster, CA

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
5%Service-mix similarityView profile →

Hieu Nguyen Tram, MD

Internal Medicine · Westminster, CA

Shared published services
1 shared services · view billing descriptions
  • Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow (G0181)
4%Service-mix similarityView profile →

Thu Thuy Terri Huynh, M.D.

Internal Medicine · Westminster, CA

Shared published services
1 shared services · view billing descriptions
  • Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allow (G0181)
3%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.