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Compare the published Medicare service mix of Lily Zhang with clinicians in the same registry specialty: Ophthalmology.

WALNUT CREEK, CA · Exact areaEdit location

2024 published service data · 11 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Shaily Dinesh Shah, M.D.

Ophthalmology · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Measurement of corneal curvature and depth of eye (92136)
85%Service-mix similarityView profile →

Mira Lim, M.D.

Ophthalmology · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Measurement of corneal curvature and depth of eye (92136)
77%Service-mix similarityView profile →

Joseph F Barakeh, DO PHD

Ophthalmology · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Measurement of corneal curvature and depth of eye (92136)
71%Service-mix similarityView profile →

Levon Djenderedjian, MD

Ophthalmology · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Measurement of corneal curvature and depth of eye (92136)
60%Service-mix similarityView profile →

Yen Cheng Hsia, MD

Ophthalmology · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Measurement of corneal curvature and depth of eye (92136)
60%Service-mix similarityView profile →

David D. Gilbert, MD

Ophthalmology · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Measurement of corneal curvature and depth of eye (92136)
55%Service-mix similarityView profile →

Richard Lawrence Rabin, MD

Ophthalmology · 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)
  • Measurement of corneal curvature and depth of eye (92136)
  • Imaging of optic nerve (92133)
52%Service-mix similarityView profile →

Michelle T. Nee, MD

Ophthalmology · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
44%Service-mix similarityView profile →

Vahid Feiz, M.D.

Ophthalmology · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Measurement of corneal curvature and depth of eye (92136)
  • Imaging of optic nerve (92133)
  • Ct scan of cornea (92025)
40%Service-mix similarityView profile →

Chi-Hua Maria Fang, M.D.

Ophthalmology · Walnut Creek, CA

Shared published services
3 shared services · view billing descriptions
  • Imaging of optic nerve (92133)
  • Imaging of retina (92134)
  • Exam of visual field with extended testing (92083)
34%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.