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Compare the published Medicare service mix of Eric Yan with clinicians in the same registry specialty: Internal Medicine · Nephrology (CMS).

CA · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jill Marie Meyer, MD

Internal Medicine · Nephrology (CMS) · Chula Vista, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
92%Service-mix similarityView profile →

Peter Sohn, M.D.

Nephrology (CMS) · Garden Grove, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
92%Service-mix similarityView profile →

Harmanjit Singh, MD

Nephrology (CMS) · Torrance, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
90%Service-mix similarityView profile →

Vimal Vermani, M.D.

Internal Medicine · Nephrology (CMS) · Ventura, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
88%Service-mix similarityView profile →

Karo Torosian, D.O

Nephrology (CMS) · La Jolla, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
88%Service-mix similarityView profile →

Andrew Tze-Ray Cheung, M.D.

Internal Medicine · Nephrology (CMS) · Corona, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
88%Service-mix similarityView profile →

Joshua Greenstein, M.D.

Nephrology (CMS) · Escondido, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
87%Service-mix similarityView profile →

Anthony Paul Nicolaysen, MD

Internal Medicine · Nephrology (CMS) · Mission Hills, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
87%Service-mix similarityView profile →

Pablo Gonzalo Echevarria Villanueva-Meyer

Internal Medicine (CMS) · Glendale, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
86%Service-mix similarityView profile →

Dylan L. Steer, M.D.

Internal Medicine · Nephrology (CMS) · La Jolla, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
86%Service-mix similarityView profile →

Fharak Maa Chip, M.D.

Internal Medicine · Nephrology (CMS) · National City, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
86%Service-mix similarityView profile →

Shankha Nandi, D.O.

Nephrology (CMS) · Wildomar, 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)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Dialysis services, 4 or more physician visits per month (20 years or older) (90960)
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.