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Compare the published Medicare service mix of Ying Chen, MD with clinicians in the same registry specialty: Internal Medicine · Nephrology (CMS).

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 64 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Willie R Ross, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
73%Service-mix similarityView profile →

Monica Chang-Panesso, MD

Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
71%Service-mix similarityView profile →

Karen Marie Galvez Flores, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
71%Service-mix similarityView profile →

Frank Joseph O'brien, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
71%Service-mix similarityView profile →

Steven Chih-Nung Cheng, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
70%Service-mix similarityView profile →

Benjamin Duane Humphreys, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
70%Service-mix similarityView profile →

Patricia Fung-Yu Kao, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
69%Service-mix similarityView profile →

Tarek Alhamad, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
67%Service-mix similarityView profile →

Rohan Singh Paul, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
66%Service-mix similarityView profile →

Naoka Murakami, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Urinalysis, manual test (81002)
66%Service-mix similarityView profile →

Kira S Mailey, M.D.

Nephrology (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
66%Service-mix similarityView profile →

Rajalakshmi T Gopalakrishnan, MD

Internal Medicine · Nephrology (CMS) · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
66%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.