Eunmee Yook, MD
As reported to Medicare
- Credential
- MD
- Primary specialty
- Ophthalmology
- Medical school graduation
- 2013
- National Provider Identifier (NPI)
- 1669715504
Total number of lens replacement surgeries and YAG laser capsulotomies this clinician billed to Medicare in the most recent 12-month claims period, as reported by CMS.
Percentile rank of 159 surgeries compared to peers CMS lists under Ophthalmology who have billed at least one cataract surgery to Medicare in the same period.
Source: Centers for Medicare & Medicaid Services (June 2026 release).
Dr. Yook's Cataract Surgery Billing Volume Compared to Peers
Reading the curve: find a volume along the bottom, and the line gives the percentile of the clinicians CMS lists under Ophthalmology at or below it. The marked point is this clinician. The curve begins at the 22nd percentile because CMS suppresses counts below 11, and 2,767 clinicians in the group carry that range instead of a number. It ends at the 99th percentile, and a small number of clinicians bill more than that.
Source: Centers for Medicare & Medicaid Services (June 2026 release).
| Percentile | Cataract Surgeries billed to Medicare |
|---|---|
| 30th | 27 |
| 40th | 56 |
| 50th | 98 |
| 60th | 149 |
| 70th | 216 |
| 80th | 304 |
| 90th | 466 |
Understanding CMS Data
These figures are based on cataract surgeries billed to Original Medicare and Medicare Advantage as reported by the Centers for Medicare & Medicaid Services (CMS) in their June 2026 data release. The CMS data doesn't include procedures performed for patients who have other health care coverage (e.g., commercially insured, self pay, or VA). Furthermore, CMS sums up specific billing codes that cover lens replacement surgery and YAG laser capsulotomy to calculate the total number of cataract surgeries. Billing variation and coding errors could potentially affect CMS's data. Therefore, the cataract surgery volume data reported by CMS may be higher or lower than the actual total cataract surgeries performed by a clinician. We share the total cataract surgery figures for the clinicians CMS lists under Ophthalmology as CMS publishes them, without alteration.
National Percentile Calculation
CMS publishes its own percentile for this data using a single, national pool that also includes the clinicians listed with the specialty of Optometry. We use CMS's percentile formula, but restrict the comparison group to the clinicians CMS records as Ophthalmology, so our number answers a narrower question: how does this clinician's procedure volume compare with other clinicians who billed Medicare for at least one cataract surgery and reported that their specialty was Ophthalmology?