Colonoscopy clinicians in Evanston, Illinois

CMS lists 61 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 Evanston, Illinois (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
John Venetos, MD	341	97%
Ibrahim Habib, MD	247	93%
Dhiren Shah, MD	164	83%
Willis Parsons, MD	154	81%
Matthew Tick, DO	147	79%
Nikos Christopoulos, MD	145	79%
Manoj Mehta, MD	139	77%
Aaron Benson, MD	133	75%
Farhan Quader, MD	131	75%
Christian Stevoff, MD	123	72%
Atena Lodhi, MD	120	71%
Michael Hersh, MD	115	70%
Daksesh Patel, DO	113	69%
Ioannis Economou, MD	111	68%
Shailesh Bajaj, MD	108	67%
Susannah Spiess, MD	105	66%
Benjamin Vancura, MD	103	65%
Rebecca Tsang	102	65%
Soojong Chae, MD	101	65%
Walter Glaws, DO	99	64%
Joel Retsky, MD	97	63%
Monica Borkar, MD	96	63%
Edward Villa, MD	90	60%
Jacob Sadik, MD	86	58%
Amer Alsamman, MD	82	56%
David Jandura, MD	81	55%
Anna Patel, MD	79	54%
David Labowitz, DO	78	54%
Tilemahos Spyratos, DO	77	53%
Daniel Jonas, MD	76	53%
Jason Kramer, MD	69	49%
Sandeep Mahajan, MD	67	48%
Ami Behara, MD	65	47%
Michael Greenspan, MD	65	47%
Paul Fahrenbach, MD	61	45%
Christopher Boutin, MD	60	44%
Blake Jones, MD	60	44%
Laura Bianchi, MD	58	43%
Roshni Jain, MD	58	43%
Andrew Moore, MD	56	42%
Jeremy Van, DO	55	41%
Eric Montminy, MD	51	39%
Armani Patel, MD	48	37%
Shakthi Kumar, MD	47	36%
Stephanie Betcher, MD	46	36%
Anuhya Gampa	45	35%
Sarah Burroughs, DO	44	34%
Patrick Lynch, MD	44	34%
Aava Khatiwada, MD	42	33%
Thomas Nealis, MD	41	32%
Nolan Faust, MD	38	30%
Dharani Guttikonda, MD	38	30%
Emanuelle Bellaguarda	37	30%
Allison Rzepczynski, MD	34	28%
Nabeel Wahid	27	23%
Shubha Singh, MD	24	21%
Purnima Balachandran, MD	23	21%
Bennett Plotnick, MD	14	15%
Joseph Ahn, MD	1-10	13% or below
Daniel Ganger, MD	1-10	13% or below
Andrew Ross, 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).