Cataract surgery clinicians in Winston Salem, North Carolina

CMS lists 34 clinicians with a primary specialty of Ophthalmology who have billed Medicare for at least one cataract surgery and practice in Winston Salem, North Carolina (details below).

Cataract surgery volume

Clinician	Cataract surgeries billed	Percentile rank
Stephen Nagy, MD	483	90%
Vickas Khemsara, MD	357	83%
Taras Semchyshyn, MD	328	81%
Frank Moya, MD	247	73%
Justin Hess, MD	241	73%
Susanna Ringeman, MD	220	70%
Levi Kauffman, MD	206	68%
Chanda Griessel, MD	195	67%
Keith Walter, MD	171	63%
Matthew Giegengack, MD	137	57%
Susan Burden, MD	111	52%
Jiaxi Ding, MD	111	52%
Michael Evans, MD	111	52%
Monica Cid, MD	108	52%
Gillian Treadwell, MD	81	46%
Amy Wall, MD	72	43%
Sara Spyris, MD	67	42%
James Branch, MD	66	42%
Jennifer Barger, MD	55	39%
James Slyman, MD	29	31%
Carol Ziel, MD	25	29%
Atalie Thompson, MD	15	24%
Dean Bonsall, MD	1-10	21% or below
David Browning, MD	1-10	21% or below
Henry Burnett, MD	1-10	21% or below
Kristen Godwin, MD	1-10	21% or below
Craig Greven, MD	1-10	21% or below
Margaret Greven, MD	1-10	21% or below
Owen Krueger, MD	1-10	21% or below
Akshay Mentreddy, DO	1-10	21% or below
Sally Ong, MD	1-10	21% or below
Sarwat Salim, MD	1-10	21% or below
Rajiv Shah, MD	1-10	21% or below
Jordan Ueberroth, 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.

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).