Colonoscopy clinicians in Evanston, Illinois

CMS lists 56 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	342	97%
Ibrahim Habib, MD	257	94%
Willis Parsons, MD	162	82%
Dhiren Shah, MD	162	82%
Matthew Tick, DO	149	80%
Nikos Christopoulos, MD	148	80%
Manoj Mehta, MD	146	79%
Christian Stevoff, MD	145	79%
Rebecca Tsang	130	74%
Aaron Benson, MD	129	74%
Farhan Quader, MD	129	74%
Shailesh Bajaj, MD	120	71%
Daksesh Patel, DO	118	70%
Jacob Sadik, MD	113	69%
Joel Retsky, MD	112	68%
Michael Hersh, MD	111	68%
Benjamin Vancura, MD	111	68%
Susannah Spiess, MD	109	67%
Atena Lodhi, MD	103	65%
David Jandura, MD	98	63%
David Labowitz, DO	97	63%
Edward Villa, MD	89	59%
Monica Borkar, MD	86	58%
Soojong Chae, MD	86	58%
Daniel Jonas, MD	84	57%
Anna Patel, MD	84	57%
Ioannis Economou, MD	80	55%
Ami Behara, MD	71	50%
Michael Greenspan, MD	64	47%
Blake Jones, MD	64	47%
Sandeep Mahajan, MD	62	46%
Andrew Moore, MD	57	43%
Aava Khatiwada, MD	49	38%
Jason Kramer, MD	49	38%
Emanuelle Bellaguarda	48	38%
Christopher Boutin, MD	47	37%
Dharani Guttikonda, MD	47	37%
Laura Bianchi, MD	46	36%
Anuhya Gampa	46	36%
Patrick Lynch, MD	45	36%
Paul Fahrenbach, MD	43	34%
Nolan Faust, MD	43	34%
Shakthi Kumar, MD	43	34%
Armani Patel, MD	42	34%
Roshni Jain, MD	40	33%
Purnima Balachandran, MD	37	31%
Jeremy Van, DO	37	31%
Allison Rzepczynski, MD	35	29%
Bennett Plotnick, MD	32	27%
Stephanie Betcher, MD	28	25%
Sarah Burroughs, DO	26	23%
Shubha Singh, MD	26	23%
Nabeel Wahid	18	18%
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 (August 18, 2026 release).