Colonoscopy clinicians in Grand Rapids, Michigan

CMS lists 47 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 Grand Rapids, Michigan (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Muhammad Azrak, MD	131	75%
Matthew Moeller, MD	118	71%
Thomas Rupp, MD	103	65%
Robbie Taha, DO	102	65%
Daniel Havlichek, MD	95	62%
Aref Alrayes, MD	92	61%
Bret Autrey, DO	92	61%
Bachar Hamad, MD	87	59%
Andrew Shreiner, MD	82	56%
Christopher Radawski, MD	80	55%
Randall Meisner, MD	76	53%
Robert Bischoff, DO	75	52%
Bradford Whitmer, DO	73	51%
Alexander Stojanovic, MD	72	51%
Ben Kieff, MD	69	49%
Matthew Nelson, MD	65	47%
Courtney Ferch, MD	63	46%
Patrick Brown, DO	60	44%
Jeremy Barber, DO	57	42%
Eugene Zolotarevsky, MD	55	41%
Christopher Hakim, MD	51	39%
Lia Kaufman, MD	47	36%
Krishna Meka, DO	47	36%
Asif Azeem, MD	46	36%
Jesse Hartpence	46	36%
Benjamin Dozeman, DO	45	35%
David Zink, MD	44	34%
Lindsay Negash, DO	41	32%
Wael Dahhan, MD	39	31%
Essam Tellawi, MD	39	31%
Catherine Bartnik	36	29%
Christopher Murphy, MD	35	28%
Dana Stewart, DO	35	28%
Stephen Simmer, MD	34	28%
Jay Morrow, MD	33	27%
Srinivas Janardan, MD	32	27%
Mark Cooper, MD	29	25%
Tiffany Jarois, DO	28	24%
Aditi Saxena, MD	28	24%
Curtis Weaver, MD	28	24%
Tammy Tran-Yang, DO	25	22%
Ryan Wong, MD	24	21%
Michael Puff, MD	12	14%
John Papp, MD	11	13%
Deborah Cloney, MD	1-10	13% or below
Rashmi Juneja, MD	1-10	13% or below
Gregory Osborne, 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 (October 2, 2026 release).