Colonoscopy clinicians in Honolulu, Hawaii

CMS lists 48 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	804	99%
Kristi Lopez, MD	428	99%
Mark Morisaki, MD	353	97%
Robert Jao, MD	337	97%
Jonathan Gochu, MD	331	97%
Clyde Miyaki, MD	330	97%
Eugene Kamemoto, MD	328	97%
Cory Miyamoto, MD	318	96%
Ronald Pang, MD	267	94%
Jeong Kim, MD	261	94%
Mari Ikeguchi, MD	241	93%
James Grobe, MD	221	91%
Jennifer Tamai, MD	217	90%
Herbert Lim, MD	202	89%
Roland Ter, MD	173	85%
Ike Tanabe, MD	154	81%
Brandon Yim, MD	150	80%
Russell Yang, MD	146	79%
Timothy Swindoll, DO	145	79%
Stephen Buto, MD	138	77%
James Obrien, MD	116	70%
Carlson Wong, MD	109	67%
Daniel Chan, MD	106	66%
Christopher Aoki, MD	102	65%
Christy Ann Gilman, MD	102	65%
Larissa Fujii-Lau, MD	97	63%
Kraig Young, MD	84	57%
Ankur Jain, MD	82	56%
Gavin Park, MD	82	56%
Robert Pattison, MD	82	56%
Jaclyn Kagihara, MD	50	39%
Shilpa Jain, MD	42	34%
Julia Zhang, MD	39	32%
Traci Murakami, MD	21	20%
Mohammed Chowdhury, MD	13	15%
Chuong Tran, MD	12	14%
Scott Kuwada, MD	11	13%
Michelle Delneo, MD	1-10	13% or below
Daryl Fujiwara, MD	1-10	13% or below
Kenneth Hong, MD	1-10	13% or below
Marcia Leung, MD	1-10	13% or below
Felix Lui, MD	1-10	13% or below
Raquel Tello, MD	1-10	13% or below
Matthew Tsushima, MD	1-10	13% or below
Howard Wong, MD	1-10	13% or below
Jonathan Wong, 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.

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 (August 18, 2026 release).