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Compare the published Medicare service mix of James Benjamin Chen, M.D. with clinicians in the same registry specialty: Orthopedic Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 82 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Nader A Nassif, M.D.

Orthopedic Surgery (CMS) · Newport Beach, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
72%Service-mix similarityView profile →

Nirav Jayprakash Shah, MD

Orthopedic Surgery (CMS) · Tarzana, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
72%Service-mix similarityView profile →

Arbi Nazarian, MD

Orthopedic Surgery (CMS) · Clovis, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
71%Service-mix similarityView profile →

Wendy Wan Wong, M.D.

Orthopedic Surgery (CMS) · Walnut Creek, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
71%Service-mix similarityView profile →

Nikhil Kanu Chokshi, MD

Orthopedic Surgery (CMS) · Fountain Valley, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
70%Service-mix similarityView profile →

Sumit Hamendra Rana, M.D.

Orthopedic Surgery (CMS) · Tarzana, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
69%Service-mix similarityView profile →

Joseph Peter Turk, M.D.

Orthopedic Surgery (CMS) · Thousand Oaks, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
68%Service-mix similarityView profile →

Matthew Siljander, MD

Specialty details in registry · Newport Beach, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
68%Service-mix similarityView profile →

Liam Christian Bosch, MD

Orthopedic Surgery (CMS) · Redwood 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
68%Service-mix similarityView profile →

Alexander Tyson Bradley, MD

Orthopedic Surgery (CMS) · Dublin, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
68%Service-mix similarityView profile →

Johan Martin Forslund, MD

Orthopedic Surgery (CMS) · Fullerton, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
66%Service-mix similarityView profile →

Raj Mayur Amin, MD

Orthopedic Surgery (CMS) · Clovis, 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)
  • X-ray of knee, 4 or more views (73564)
  • X-ray of knee, 3 views (73562)
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.