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

DOWNEY, CA · Exact areaEdit location

2024 published service data · 32 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Shiva Nancy Shabnam, M.D.

Internal Medicine · Downey, CA

Shared published services
3 shared services · view billing descriptions
  • Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes (99345)
  • Advance care planning, first 30 minutes (99497)
  • Education and training to self measure blood pressure (99473)
50%Service-mix similarityView profile →

Prasad K. Chode, MD

Internal Medicine · Downey, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
45%Service-mix similarityView profile →

William Chunghun Sim, MD

Internal Medicine · Downey, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Residence visit for new patient with high level of medical decision making, per day, if using time, at least 75 minutes (99345)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
39%Service-mix similarityView profile →

Renuka D Patel, M.D.

Internal Medicine · Downey, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Administration of influenza virus vaccine (G0008)
38%Service-mix similarityView profile →

Alan Anthony Frischer, M.D.

Internal Medicine · Downey, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
  • Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and (G0180)
30%Service-mix similarityView profile →

Nathan Lim

Internal Medicine · Downey, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
28%Service-mix similarityView profile →

Reza Sharafi, M.D.

Internal Medicine · Downey, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Advance care planning, first 30 minutes (99497)
  • Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)
23%Service-mix similarityView profile →

Laura Frischer Ryan, M.D.

Internal Medicine · Downey, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
22%Service-mix similarityView profile →

Goethe Issac Hsu, M.D.

Internal Medicine · Downey, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
22%Service-mix similarityView profile →

Veda Ramesh, M.D.

Internal Medicine · Downey, CA

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
19%Service-mix similarityView profile →

Raj Balasundaram, M.D.

Internal Medicine · Downey, CA

Shared published services
1 shared services · view billing descriptions
  • Advance care planning, first 30 minutes (99497)
14%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.