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Cataract surgery clinicians in Portland, Oregon

CMS lists 79 clinicians with a primary specialty of Ophthalmology who have billed Medicare for at least one cataract surgery and practice in Portland, Oregon (details below).

Cataract surgery volume

Clinician Cataract surgeries billed Percentile rank
Oswald Rondon, MD 2,317 99%
Eden Yoon, MD 1,744 99%
David Gano, MD 1,138 99%
Bryan Edgington, MD 1,120 99%
Robert Ford, MD 979 98%
Cheri Leng, MD 521 92%
Rebecca Armour, MD 343 83%
Nathaniel Gebhard, MD 286 78%
David Poulsen, MD 270 76%
Jennifer Lyons, MD 259 75%
Jonathan Kemp, MD 256 74%
Shane Kim, MD 226 71%
Michael Page, MD 225 71%
Nisha Nagarkatti-Gude, MD 209 69%
James Wentzien, MD 204 68%
David Sanders, MD 195 67%
Matthew Kaufman, MD 178 64%
Daniel Holland, MD 162 61%
Jordon Lubahn, MD 152 60%
Sonal Dave, MD 144 58%
Mehrdad Malihi, MD 144 58%
Tyler Boulter, MD 137 57%
Daniel Lee, MD 135 57%
Lorinna Lombardi, MD 135 57%
Robert McGlynn, MD 126 55%
Martin Balish, MD 118 54%
Jacqueline Ng, MD 118 54%
Robert Kinast, MD 104 51%
Blake Acohido, MD 101 50%
Michael Straiko, MD 100 50%
Alexander Robin, MD 96 49%
Jennifer Balentine, MD 95 49%
Steven Mansberger, MD 88 47%
Hillary Stiefel, MD 87 47%
Andrea Yonge, MD 82 46%
Sarah Glass, MD 81 46%
Jocelyn Lam, MD 76 45%
Prashanth Vallabhanath, MD 64 41%
Jeffrey Healey, MD 60 41%
Andrea Dostroph, MD 59 40%
Richard Stutzman, MD 59 40%
Stanley Crews, MD 49 37%
Jessica Chen, MD 42 35%
Ashlin Joye, DO 40 34%
Claudine Yee, MD 31 31%
Afshan Nanji, MD 27 30%
Roma Pegany, MD 26 29%
Laura Selby, MD 25 29%
Michael Gale, MD 23 28%
Zoey Stoumbos, MD 20 27%
Zachary Kroeger, MD 19 26%
Kun Ding, MD 17 25%
Mark Terry, MD 16 24%
Winston Chamberlain, MD 14 23%
Sirichai Pasadhika, MD 11 21%
Christopher Aderman, MD 1-10 21% or below
Steven Bailey, MD 1-10 21% or below
Melinda Binkley, MD 1-10 21% or below
Adam Braganza, MD 1-10 21% or below
John Campbell, MD 1-10 21% or below
Ariel Chen, MD 1-10 21% or below
John Clements, MD 1-10 21% or below
Jordan Desautels, MD 1-10 21% or below
Gwendolyn Edeen, MD 1-10 21% or below
Michael Lee, MD 1-10 21% or below
Michael May, MD 1-10 21% or below
Apurva Patel, MD 1-10 21% or below
Erick Rivera-Grana, MD 1-10 21% or below
David Simons, MD 1-10 21% or below
Janani Singaravelu, MD 1-10 21% or below
Claire Smith, MD 1-10 21% or below
Aristomenis Thanos, MD 1-10 21% or below
Merina Thomas, MD 1-10 21% or below
Paul Tlucek, MD 1-10 21% or below
Danita Tom, MD 1-10 21% or below
Carlos Torres Quinones, MD 1-10 21% or below
Daniel Tu, MD 1-10 21% or below
Paul Yang, MD 1-10 21% or below
Benjamin Young, 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.

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).