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Compare the published Medicare service mix of Justin Hwa Chan, M.D. with clinicians in the same registry specialty: Hand Surgery · Orthopedic Surgery (CMS).

CA · Exact areaEdit location

2024 published service data · 184 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael C Daly, MD

Orthopedic Surgery (CMS) · Sacramento, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
88%Service-mix similarityView profile →

Kelvin Khek Yen Lim, M.D.

Hand Surgery (CMS) · Salinas, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
84%Service-mix similarityView profile →

Christopher Jerome Wilson, MD

Hand Surgery · Orthopedic Surgery (CMS) · Sacramento, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
84%Service-mix similarityView profile →

Kai Uwe Mazur, M.D.

Hand Surgery · Orthopedic Surgery (CMS) · Santa Rosa, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
83%Service-mix similarityView profile →

Daniel P Birkbeck, MD

Hand Surgery · Orthopedic Surgery (CMS) · Napa, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
83%Service-mix similarityView profile →

Hassan Jon Azimi, M.D.

Orthopedic Surgery (CMS) · San Diego, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
82%Service-mix similarityView profile →

Eli T Ziv, M.D.

Hand Surgery · Orthopedic Surgery (CMS) · Sherman 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
82%Service-mix similarityView profile →

Amir Hossein Mostofi, MD

Hand Surgery · Orthopedic Surgery (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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
81%Service-mix similarityView profile →

Jenniefer Yumee Kho, M.D.

Hand Surgery · Orthopedic Surgery (CMS) · Van Nuys, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
81%Service-mix similarityView profile →

Purab Chawla Viswanath, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
81%Service-mix similarityView profile →

Gregory J Hanker, M.D.

Hand Surgery · Orthopedic Surgery (CMS) · Van Nuys, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
80%Service-mix similarityView profile →

Andre Michael Ishak, M.D.

Hand Surgery · Orthopedic Surgery (CMS) · Oxnard, 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • X-ray of hand, minimum of 3 views (73130)
80%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.