Colonoscopy clinicians in Salt Lake City, Utah

CMS lists 65 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 Salt Lake City, Utah (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Dan Collins, MD	325	97%
Peter Fenton, MD	261	94%
Matthew Feurer, MD	185	86%
Gordon Harmston, MD	170	84%
Edward Frech, MD	163	83%
Steven Desautels, MD	162	82%
Christopher Cutler, MD	158	82%
Andrew Heiner, MD	157	82%
James Bown, MD	137	76%
John David Schmidt, MD	129	74%
Joseph Merrill, MD	123	72%
Robert Kyle Barnett, MD	117	70%
David Trowbridge, MD	112	68%
Chaya Krishnamurthy, MD	106	66%
Allison Venner, MD	99	64%
Jessica Stout, DO	92	61%
Jason Wills, MD	92	61%
John Erikson Yap, MD	92	61%
Rebecca Voaklander, MD	90	60%
Bill Quach, MD	74	52%
Michael Weaver, MD	73	51%
Richard Craig, MD	70	50%
Matthew Steenblik, MD	64	47%
Jason Dubroff, MD	63	46%
Christopher Maxwell, MD	62	46%
James Stewart, MD	61	45%
Darcie Gorman, MD	60	45%
Judith Staub, MD	59	44%
Luke Gessel, MD	49	38%
Charlie Fox, MD	47	37%
Reid Hales, MD	47	37%
Mark Jensen, DO	46	36%
John Morris, MD	45	36%
Bryan Silon, MD	44	35%
Ann Flynn, MD	40	33%
Takayuki Suzuki, MD	40	33%
Ramon Minjares Granillo, MD	39	32%
Robert Bridge, MD	36	30%
Amir Kashani, MD	34	29%
Priscila Liberato De Mattos, MD	34	29%
Suryanarayana Challa, MD	33	28%
Nicholas Hannon, MD	31	27%
John Fang, MD	29	25%
Michael Walker, MD	27	24%
Keegan Colletier, MD	24	22%
Nathaniel Kwak, MD	22	21%
Christopher Ko, MD	21	20%
Tuan Pham, MD	21	20%
Kathryn Byrne, MD	18	18%
Jessica Johnson	17	17%
Kathryn Peterson, MD	17	17%
John Valentine, MD	14	15%
Amiko Uchida, MD	13	15%
Christopher Danford, MD	1-10	13% or below
Juan Gallegos Orozco, MD	1-10	13% or below
Andrew Gawron, MD	1-10	13% or below
Richard Gilroy, MD	1-10	13% or below
John Inadomi, MD	1-10	13% or below
Yii Chun Khiew, MD	1-10	13% or below
Rebecca Kim, MD	1-10	13% or below
Brett McGettigan, MD	1-10	13% or below
Daryl Ramai, MD	1-10	13% or below
Joseph Redman, MD	1-10	13% or below
Jessica Shay, MD	1-10	13% or below
Ashok Tuteja, 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).