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Compare the published Medicare service mix of Lan Tuyet Nguyen, M.D. with clinicians in the same registry specialty: Ophthalmology (CMS).

SAN JOSE, CA · Exact areaEdit location

2024 published service data · 23 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

John Winston Duggan, M.D., M.S.

Ophthalmology (CMS) · San Jose, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Photography of the retina (92250)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
72%Service-mix similarityView profile →

Randal Tanh Pham, M.D.

Ophthalmology (CMS) · San Jose, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient problem focused exam of visual system (92012)
  • Photography of the retina (92250)
  • Imaging of optic nerve (92133)
62%Service-mix similarityView profile →

Athiya D Javid, MD

Obstetrics/Gynecology (CMS) · San Jose, 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)
31%Service-mix similarityView profile →

Kenneth Sanford Blumenfeld, M.D.

Neurosurgery (CMS) · San Jose, 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)
27%Service-mix similarityView profile →

Andy S. Yu, M.D.

Gastroenterology · Internal Medicine (CMS) · San Jose, 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)
26%Service-mix similarityView profile →

Jay S Raju, MD

Gastroenterology · Internal Medicine (CMS) · San Jose, 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)
23%Service-mix similarityView profile →

Leo B Semkiw, M.D.

Specialty details in registry · San Jose, 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)
18%Service-mix similarityView profile →

Shahid K Siddiqui, MD

Cardiovascular Disease (Cardiology) (CMS) · San Jose, 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)
16%Service-mix similarityView profile →

David Alan Cahn, MD

Family Practice (CMS) · San Jose, 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)
16%Service-mix similarityView profile →

Munawar Alavi, M.D.

Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · San Jose, 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)
15%Service-mix similarityView profile →

Jennifer Lesley Maw, MD

Otolaryngology (CMS) · San Jose, 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)
13%Service-mix similarityView profile →

Xihua Sun, M.D. ,M.S.

Neurology (CMS) · San Jose, 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)
13%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.