A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Michael A Grassi, MD with clinicians in the same registry specialty: Ophthalmology.

NAPERVILLE, IL · Exact areaEdit location

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

Michael Thomas Andreoli, M.D.

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Exam of visual field with extended testing (92083)
69%Service-mix similarityView profile →

F David Cox, M.D.

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
60%Service-mix similarityView profile →

Shantan Reddy, MD MPH

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Exam of retinal blood vessels using a special camera after injection of a dye (92235)
59%Service-mix similarityView profile →

Anurag Gupta, MD

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Injection of drug into eye (67028)
  • Exam of retinal blood vessels using a special camera after injection of a dye (92235)
56%Service-mix similarityView profile →

Michelle E Andreoli, MD

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
54%Service-mix similarityView profile →

Eric Kim, MD

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
52%Service-mix similarityView profile →

Sachin Jain, M.D.

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
46%Service-mix similarityView profile →

Scott H Stoller, MD

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Exam of visual field with extended testing (92083)
  • Established patient problem focused exam of visual system (92012)
42%Service-mix similarityView profile →

Daniel F Debartolo, M.D.

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
40%Service-mix similarityView profile →

Jogin Jose, MD

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Exam of visual field with extended testing (92083)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
37%Service-mix similarityView profile →

Charles Soonkyu Ahn, MD

Ophthalmology · Naperville, IL

Shared published services
3 shared services · view billing descriptions
  • Imaging of retina (92134)
  • Established patient problem focused exam of visual system (92012)
  • Established patient complete exam of visual system (92014)
29%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.