Cataract surgery clinicians in Timonium, Maryland
CMS lists 9 clinicians with a primary specialty of Ophthalmology who have billed Medicare for at least one cataract surgery and practice in Timonium, Maryland (details below).
Cataract surgery volume
| Clinician | Cataract surgeries billed | Percentile rank |
|---|---|---|
| Stephen Yoon, MD | 21 | 27% |
| Christopher Shen, MD | 12 | 21% |
| Farhan Merali, MD | 11 | 21% |
| David Chu, MD | 1-10 | 21% or below |
| Xu He, MD | 1-10 | 21% or below |
| Bilal Khan, MD | 1-10 | 21% or below |
| Stephen Lesche, MD | 1-10 | 21% or below |
| Minh Vo, MD | 1-10 | 21% or below |
| Lazaros Volikas, MD | 1-10 | 21% or below |
Sorted by the number of cataract surgeries billed to Medicare, highest first, not by quality or skill. CMS suppresses counts between 1 and 10 to protect patient privacy and publishes the range instead.
Reported in previous releases
CMS does not report a cataract surgery volume for these clinicians in the August 18, 2026 release. Their pages show figures from earlier releases.
- Jonathan Collins, MD Last reported June 26, 2026
Understanding CMS Data
CMS's "Cataract surgery" category combines specific billing codes for cataract surgery to calculate the number of times each clinician billed Medicare for a "Cataract surgery." These include lens replacement surgery and YAG laser capsulotomy, a laser treatment that can follow cataract surgery. CMS reports only procedures that clinicians billed to Original Medicare and Medicare Advantage. Therefore, CMS's procedure volume data does not include procedures that clinicians may have performed on patients who have other health care coverage (e.g., commercial insurance, self-pay, or the VA). Billing variation and coding errors can also affect CMS's data. Therefore, the number of procedures that CMS reports for a clinician may be higher or lower than the actual number of cataract surgeries a clinician performed during the reporting period. Lastly, only clinicians with a primary specialty of Ophthalmology (as reported to Medicare) are presented.
Source: Centers for Medicare & Medicaid Services (August 18, 2026 release).