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Colonoscopy clinicians in San Jose, California

CMS lists 63 clinicians with a primary specialty of Gastroenterology, Internal Medicine, Family Practice, or General Practice who have billed Medicare for at least one colonoscopy and practice in San Jose, California (details below).

Colonoscopy volume

Clinician Colonoscopies billed Percentile rank
David Chui, MD 389 98%
Brian Levitt, MD 231 92%
Andy Yu, MD 226 91%
Hoan Tran, MD 169 84%
Edward Huang, MD 168 84%
Jenny Yang, MD 166 84%
Khanh Nguyen, MD 165 83%
Alexis Bayudan, MD 164 83%
Terry Lin, DO 164 83%
Huy Trinh, MD 164 83%
Jagjit Raju, MD 159 82%
Huy Nguyen, MD 119 71%
Geeta Kutty, MD 118 71%
Morgan Wong, DO 116 70%
Sanya Wadhwa, MD 110 68%
Harsha Vittal, MD 109 67%
Geoffrey Spencer, MD 108 67%
Eugenie Shieh, MD 96 63%
Robert Lerrigo, MD 69 49%
Alice Yang, MD 68 49%
Alvaro Davila, MD 65 47%
Ann Chen, MD 63 46%
David Limsui, MD 63 46%
Irene Sonu, MD 61 45%
Treta Goyal, MD 60 44%
Michelle Nguyen, MD 58 43%
Elizabeth Hwang, MD 57 42%
Paul Shao, MD 55 41%
Jason Williams, MD 55 41%
Andrew Ho, MD 52 40%
Piyanka Chandra, MD 45 35%
Ruel Garcia 44 34%
Eduardo Da Silveira, MD 42 33%
Omeed Alipour, MD 41 32%
Angela Hsu, MD 41 32%
David Lin, MD 40 32%
Nimeesh Shah, MD 38 30%
Yeong An Sheu, MD 36 29%
Michael Northcutt, MD 34 28%
Anahita Rezaie, MD 33 27%
Abdalla Mohamed, MD 28 24%
Bhargava Gannavarapu, MD 25 22%
Tahereh Ghaziani, MD 17 17%
Aparna Goel, MD 15 16%
Renumathy Dhanasekaran, MD 14 15%
Susan Cummings, MD 13 14%
Aijaz Ahmed, MD 1-10 13% or below
Omar Bakr, MD 1-10 13% or below
David Chao, MD 1-10 13% or below
Jenny Chen 1-10 13% or below
Alan Chin, MD 1-10 13% or below
Tami Daugherty, MD 1-10 13% or below
Rasik Kansara, MD 1-10 13% or below
Sundip Karsan, MD 1-10 13% or below
Paul Kwo, MD 1-10 13% or below
Allison Kwong, MD 1-10 13% or below
Quynh-Queen Nguyen, DO 1-10 13% or below
Luis Ocampo, MD 1-10 13% or below
Sunita Sood 1-10 13% or below
John Tran, MD 1-10 13% or below
Raymond Tu, MD 1-10 13% or below
Francis Yao, MD 1-10 13% or below
Wendy Zhou, DO 1-10 13% or below

Sorted by the number of colonoscopies 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 colonoscopy volume for these clinicians in the October 2, 2026 release. Their pages show figures from earlier releases.

Understanding CMS Data

CMS's "Colonoscopy" category combines specific billing codes for colonoscopy to calculate the number of times each clinician billed Medicare for a "Colonoscopy." These include screening colonoscopy, diagnostic colonoscopy, and colonoscopy with biopsy or polyp removal. CMS's list also includes flexible sigmoidoscopy and laparoscopic appendectomy, so a clinician's count may include those procedures. CMS counts one procedure per patient per day, so a colonoscopy that included both a biopsy and a polyp removal counts once. 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 colonoscopies a clinician performed during the reporting period. Lastly, only clinicians with a primary specialty of Gastroenterology, Internal Medicine, Family Practice, or General Practice (as reported to Medicare) are presented.

Source: Centers for Medicare & Medicaid Services (October 2, 2026 release).