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Colonoscopy clinicians in Honolulu, Hawaii

CMS lists 46 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 Honolulu, Hawaii (details below).

Colonoscopy volume

Clinician Colonoscopies billed Percentile rank
Donn Marutani, MD 810 99%
Kristi Lopez, MD 435 99%
Mark Morisaki, MD 359 98%
Robert Jao, MD 335 97%
Clyde Miyaki, MD 327 97%
Cory Miyamoto, MD 304 96%
Mari Ikeguchi, MD 271 95%
Jonathan Gochu, MD 253 94%
Jeong Kim, MD 250 94%
James Grobe, MD 243 93%
Eugene Kamemoto, MD 236 92%
Jennifer Tamai, MD 217 91%
Herbert Lim, MD 200 89%
Roland Ter, MD 191 87%
Timothy Swindoll, DO 186 87%
Ronald Pang, MD 179 86%
Ike Tanabe, MD 174 85%
Brandon Yim, MD 146 79%
Stephen Buto, MD 120 71%
Russell Yang, MD 113 69%
Daniel Chan, MD 108 67%
James Obrien, MD 104 66%
Christy Ann Gilman, MD 102 65%
Christopher Aoki, MD 101 65%
Carlson Wong, MD 97 63%
Larissa Fujii-Lau, MD 87 59%
Kraig Young, MD 76 53%
Robert Pattison, MD 66 47%
Gavin Park, MD 62 45%
Ankur Jain, MD 58 43%
Jaclyn Kagihara, MD 41 32%
Shilpa Jain, MD 36 29%
Julia Zhang, MD 33 27%
Chuong Tran, MD 16 16%
Marcia Leung, MD 13 14%
Mohammed Chowdhury, MD 12 14%
Michelle Delneo, MD 1-10 13% or below
Daryl Fujiwara, MD 1-10 13% or below
Kenneth Hong, MD 1-10 13% or below
Scott Kuwada, MD 1-10 13% or below
Felix Lui, MD 1-10 13% or below
Traci Murakami, MD 1-10 13% or below
Raquel Tello, MD 1-10 13% or below
Matthew Tsushima, MD 1-10 13% or below
Aaron Woofter, MD 1-10 13% or below
Mark Yoshida, MD 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).