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Compare the published Medicare service mix of Robert Lance Charet, MD with clinicians in the same registry specialty: Ophthalmology.

HAWTHORNE, CA · 10 milesEdit location
Within 10 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 123 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Leroy W Vaughn, M.D.

Ophthalmology · Inglewood, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
49%Service-mix similarity~2.8 milesView profile →

David Sarraf, MD

Ophthalmology · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Photography of the retina (92250)
48%Service-mix similarity~9.4 milesView profile →

Sanford Stephen Davidson, MD

Ophthalmology · Redondo Beach, CA

Shared published services
2 shared services · view billing descriptions
  • Removal of eyelashes using forceps (67820)
  • Exam of the internal drainage system of eye (92020)
46%Service-mix similarity~6.1 milesView profile →

Alice Yon Kim, M.D.

Ophthalmology · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Removal of eyelashes using forceps (67820)
  • Established patient complete exam of visual system (92014)
  • Exam of the internal drainage system of eye (92020)
45%Service-mix similarity~9.9 milesView profile →

Hanna F Shammas, M.D.

Ophthalmology · Lynwood, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • Photography of the retina (92250)
44%Service-mix similarity~8.6 milesView profile →

Kouros Nourimahdavi, MD, MS

Ophthalmology · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Exam of the internal drainage system of eye (92020)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
43%Service-mix similarity~9.4 milesView profile →

Jo Ann Andrea Giaconi, MD

Ophthalmology · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Exam of the internal drainage system of eye (92020)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
42%Service-mix similarity~9.4 milesView profile →

David Lozano Giral, MD, MSC

Ophthalmology · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • Photography of the retina (92250)
42%Service-mix similarity~9.4 milesView profile →

Wei Gui, M.D.

Ophthalmology · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Extended exam of the back part of the eye with retinal drawing (92201)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
41%Service-mix similarity~9.4 milesView profile →

Anne Coleman, MD

Ophthalmology · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Exam of the internal drainage system of eye (92020)
  • Photography of the retina (92250)
41%Service-mix similarity~9.4 milesView profile →

John Francis Maher, M.D.

Ophthalmology · Torrance, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Exam of the internal drainage system of eye (92020)
  • Extended exam of the back part of the eye with retinal drawing (92201)
40%Service-mix similarity~7.2 milesView profile →

Daniel Park

Ophthalmology · Culver City, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient complete exam of visual system (92014)
  • Exam of the internal drainage system of eye (92020)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
40%Service-mix similarity~7.5 milesView 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 approximate distance 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.