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Compare the published Medicare service mix of Yang Shen, M.D. with clinicians in the same registry specialty: Endocrinology · Internal Medicine (CMS).

PASADENA, CA · Exact areaEdit location

2024 published service data · 6 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Mahtab Sohrevardi, MD

Endocrinology (CMS) · Pasadena, 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)
  • Injection of drug or substance under skin or into muscle (96372)
  • Hemoglobin a1c level (83036)
73%Service-mix similarityView profile →

Jennifer Chang, M.D.

Endocrinology · Internal Medicine (CMS) · Pasadena, 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)
  • Injection of drug or substance under skin or into muscle (96372)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
72%Service-mix similarityView profile →

Frederick Ock-Horn Lee, MD

Internal Medicine (CMS) · Pasadena, 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)
62%Service-mix similarityView profile →

Albert Shieh, M.D.

Endocrinology · Internal Medicine (CMS) · Pasadena, 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)
  • Injection of drug or substance under skin or into muscle (96372)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
61%Service-mix similarityView profile →

Warren Christopher Lee, MD, MHS

Endocrinology · Internal Medicine (CMS) · Pasadena, CA

Shared published services
2 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
54%Service-mix similarityView profile →

Maria Isabel Linares Valderrama, M.D.

Endocrinology · Internal Medicine (CMS) · Pasadena, CA

Shared published services
2 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
38%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.