Cataract surgery clinicians in Palo Alto, California

CMS lists 39 clinicians with a primary specialty of Ophthalmology who have billed Medicare for at least one cataract surgery and practice in Palo Alto, California (details below).

Cataract surgery volume

Clinician	Cataract surgeries billed	Percentile rank
Artis Montague, MD	363	84%
Debbie Kuo, MD	329	81%
Jason Much, MD	325	81%
Anna Kesler-Diaz, MD	289	78%
Mary Ann Lloyd, MD	263	75%
Christos Theophanous, MD	232	71%
Robert Chang, MD	219	70%
Ryan St Clair, MD	202	68%
Charles Lin, MD	176	64%
Bethlehem Mekonnen, MD	156	60%
Amy Badger-Asaravala, MD	111	52%
Audrey Chow, MD	103	51%
Thomas Tayeri, MD	103	51%
Jessica Chen, MD	77	45%
Ann Fisher, MD	77	45%
Yang Sun, MD	69	43%
Rajvi Mehta, MD	59	40%
Charles Yu, MD	49	37%
Geoffrey Tabin, MD	48	37%
Steven Sanislo, MD	47	37%
Stephen Smith, MD	41	35%
Kuldev Singh, MD	39	34%
Judy Ou, MD	31	31%
Diana Do, MD	30	31%
Gala Beykin, MD	23	28%
Ann Shue, MD	22	27%
Eirene Wong, MD	12	21%
Theodore Leng, MD	11	21%
Dolly Chang, MD	1-10	21% or below
Susan Connolly, MD	1-10	21% or below
Jeffrey Goldberg, MD	1-10	21% or below
Hyunjin Kim, MD	1-10	21% or below
Robert Kule, MD	1-10	21% or below
Loh-Shan Leung, MD	1-10	21% or below
Prithvi Mruthyunjaya, MD	1-10	21% or below
Quan Nguyen, MD	1-10	21% or below
Amila Silva, MD	1-10	21% or below
Gurunadh Vemulakonda, MD	1-10	21% or below
Sophia Wang, 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).