Colonoscopy clinicians in Chicago, Illinois

CMS lists 227 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 Chicago, Illinois (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
John Venetos, MD	342	97%
Samuel Castillo, MD	290	95%
Alexander Tosiou, MD	224	91%
Amritbhai Patel, MD	184	86%
David Manuel, MD	182	86%
Arturo Olivera, MD	168	84%
Frank Martini, MD	167	84%
Perry Kamel, MD	162	82%
Tarun Patel, MD	154	81%
Christian Stevoff, MD	145	79%
John Gaetano, MD	144	79%
Neil Gupta, MD	144	79%
Roop Gupta, MD	136	76%
Manuel Alva, MD	134	76%
Jamie Wabich, MD	132	75%
Khurram Qadir, MD	127	73%
Carl Atallah, DO	120	71%
Shailesh Bajaj, MD	120	71%
Ashish Shah, MD	120	71%
Stephen Steiner, MD	117	70%
Hao Zhang, MD	116	70%
Michael Flicker, MD	115	69%
Raza Hamdani, MD	114	69%
Neha Kaiser, DO	110	68%
Thomas Lee, MD	109	67%
David Shapiro, MD	108	67%
Stephen Chang, MD	107	67%
Kenneth Oriordan, MD	106	66%
Rajeev Nayar, MD	105	66%
Michael Uzer, MD	103	65%
Lawrence Gluskin, MD	100	64%
David Chua, MD	98	63%
Jonathan Erlich, MD	92	61%
Michael Brown, MD	89	59%
Srinadh Komanduri, MD	89	59%
Imad Elkhatib, MD	88	59%
Terrance Rodrigues, MD	85	57%
Syed Zaidi, MD	85	57%
Sameer Barkatullah, MD	84	57%
Rajesh Keswani, MD	84	57%
Neal Mehta	81	55%
Omar Nehme, MD	81	55%
Charles Muller, MD	78	54%
Andrew Albert, MD	76	53%
Uzma Siddiqui, MD	76	53%
Saad Saffo	74	52%
Meghan Barrett-Englert, MD	73	51%
Eugene Yen, MD	72	51%
Mark De Meo, MD	71	50%
Tommy Pacana, MD	69	49%
Victor Udechukwu, MD	68	49%
Eric Montminy, MD	67	48%
Jasmine Sinha, MD	67	48%
Christopher Chapman, MD	65	47%
Kamran Heydarpour, MD	65	47%
Neil Kapil, MD	65	47%
Salina Lee, MD	65	47%
Blake Jones, MD	64	47%
Yousef Nassar	64	47%
Kiran Nimmagadda, MD	64	47%
Adam Stein, MD	64	47%
Darrien Gaston, MD	61	45%
Abdul Aadam, MD	59	44%
Stephanie Kalant, DO	59	44%
Amanda Siegel, MD	58	44%
Nathan Alhalel, MD	57	43%
Manish Dhamija, MD	57	43%
Joseph Frasca, MD	57	43%
Andrew Moore, MD	57	43%
Arun Verma, MD	57	43%
Asim Shuja, MD	56	42%
Luay Almassalha	55	42%
Domenico Farina, MD	55	42%
John Czarnecki, MD	54	41%
Nina Gupta, MD	54	41%
Leila Kia, MD	54	41%
Kirbylee Nelson, MD	54	41%
Tenzin Choden, MD	53	41%
Calvin Hall, MD	52	40%
Ajaypal Singh, MD	52	40%
Dennis Chen, MD	50	39%
Alexander Hristov	50	39%
Farnaz Shariati, MD	50	39%
Aava Khatiwada, MD	49	38%
Maham Lodhi, MD	49	38%
Oscar Rivas Chicas, MD	49	38%
Neil Sengupta, MD	49	38%
Nidhi Singh, MD	49	38%
Emanuelle Bellaguarda	48	38%
Darren Brenner, MD	48	38%
Dharani Guttikonda, MD	47	37%
Anuhya Gampa	46	36%
Ali Haider, MD	45	36%
Alexander Pan, MD	45	36%
Michael Ruchim, MD	45	36%
Aashesh Verma, MD	45	36%
Wojciech Blogowski, MD	44	35%
David Butler, MD	44	35%
Sushila Dalal, MD	44	35%
Gregory Pajot, MD	44	35%
Frances Puello, MD	44	35%
Kapuluru Reddy, MD	44	35%
Paul Fahrenbach, MD	43	34%
Nolan Faust, MD	43	34%
Thomas Nealis, MD	43	34%
Amit Patel, MD	42	34%
Armani Patel, MD	42	34%
Daniel Berger, MD	41	33%
Russell Cohen, MD	41	33%
Phithao Nguyen, MD	41	33%
Atsushi Sakuraba, MD	41	33%
Rana Abraham, MD	40	33%
Jaimin Amin, MD	40	33%
Stephen Hanauer, MD	39	32%
Bradford Chong, MD	38	31%
Krutika Lakhoo, MD	38	31%
Marian Skolarz, MD	38	31%
Zohair Ahmed, MD	37	31%
Mary Biglin, MD	37	31%
Olufemi Kassim, MD	37	31%
Joy Liu, MD	36	30%
David Bromberg, MD	35	29%
Sonia Kupfer, MD	35	29%
Hemant Mutneja, MD	35	29%
Ashley Vareedayah, MD	35	29%
Christopher Kasia, MD	34	29%
Anthony Merza, MD	34	29%
Kenika Robinson, MD	34	29%
Itishree Trivedi, MD	34	29%
Brian Boulay, MD	33	28%
Mohammad Fayyaz, MD	33	28%
Benjamin Levy, MD	33	28%
Tariq Rahim, MD	33	28%
David Rubin, MD	33	28%
Vikram Kotwal, MD	32	27%
Tarek Alansari, MD	31	27%
Arouj Bajwa, MD	31	27%
Kanika Garg	31	27%
Keith Naylor, MD	31	27%
Joel Pekow, MD	31	27%
Maria Rosario Ferreira, MD	30	26%
Alexandra Baumann, DO	29	25%
Mona Lalehzari, MD	29	25%
Lalitha Sitaraman, MD	29	25%
Veena Nannegari, MD	28	25%
Melchor Demetria, MD	27	24%
Gabriel Marrero Rivera, MD	27	24%
Ofer Fass, MD	26	23%
Christine Boumitri, MD	25	23%
Harold Boutte, MD	25	23%
Nimrod Deiss-Yehiely, MD	25	23%
David Jarava, MD	25	23%
Shilpa Kailas, MD	25	23%
Edwin McDonald, MD	25	23%
Ruchi Patel, MD	25	23%
Jane Suh	25	23%
Grace Kim, MD	23	22%
Ayokunle Abegunde, MD	22	21%
Sujatha Kailas, MD	22	21%
Ali Keshavarzian, MD	21	20%
Adelina Hung, MD	20	19%
Julia Dyer, MD	19	19%
Robin Fintel, MD	19	19%
Nisha Howarth, MD	19	19%
Robert Kavitt, MD	19	19%
Ece Mutlu, MD	19	19%
Irving Waxman, MD	19	19%
Robert Carroll, MD	18	18%
Wadih Chacra, MD	18	18%
Omar Jamil, MD	18	18%
Benjamin McDonald, MD	18	18%
Sharif Murphy, MD	18	18%
Nabeel Wahid	18	18%
Anna Lipowska, MD	17	17%
Ronak Patel, MD	17	17%
Parambir Dulai, MD	15	16%
Maria El Gemayel, MD	15	16%
Rima Shobar, MD	15	16%
Laura Yun, MD	15	16%
Ross McMillan, MD	14	15%
Sophie Brigstocke, MD	13	15%
Sandra Naffouj, MD	13	15%
Ann Lee, MD	12	14%
Alice Cheng, MD	11	13%
Noa Cleveland, MD	11	13%
Andres Duarte, MD	11	13%
Ikechukwu Achebe, MD	1-10	13% or below
Muhammed Alikhan, MD	1-10	13% or below
Muhammad Asghar, MD	1-10	13% or below
Jamie Berkes, MD	1-10	13% or below
Justin Boike, MD	1-10	13% or below
Dustin Carlson, MD	1-10	13% or below
Amanda Cheung, MD	1-10	13% or below
Ravi Deshmukh, MD	1-10	13% or below
Steven Flamm, MD	1-10	13% or below
Yichun Fu, MD	1-10	13% or below
Seema Gandhi, MD	1-10	13% or below
Daniel Ganger, MD	1-10	13% or below
Aiman Ghufran, MD	1-10	13% or below
Lila Glotfelty, MD	1-10	13% or below
Benjamin Go, MD	1-10	13% or below
Nirmala Gonsalves, MD	1-10	13% or below
Ariel Halper Stromberg, MD	1-10	13% or below
Dempsey Hughes, MD	1-10	13% or below
Alan Hutchison	1-10	13% or below
Sujit Janardhan	1-10	13% or below
Joseph Karacic, MD	1-10	13% or below
Corey Ketchem, MD	1-10	13% or below
Laura Kulik, MD	1-10	13% or below
Veronica Loy, DO	1-10	13% or below
Agnieszka Maniak, MD	1-10	13% or below
Bhupat Mehta, MD	1-10	13% or below
Mohammad Memon, DO	1-10	13% or below
Adam Mikolajczyk, MD	1-10	13% or below
Justin Mitchell, DO	1-10	13% or below
Christopher Moore, MD	1-10	13% or below
Matthew Odenwald, MD	1-10	13% or below
Anjana Pillai, MD	1-10	13% or below
Hannah Roth, MD	1-10	13% or below
Olga Saavedra, MD	1-10	13% or below
Carol Semrad, MD	1-10	13% or below
Erenee Sirinian, DO	1-10	13% or below
Helen Te, MD	1-10	13% or below
Sarang Thaker, MD	1-10	13% or below
Eugenia Uche-Anya, MD	1-10	13% or below
Jennifer Wang, MD	1-10	13% or below
Cemal Yazici, 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).