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Colonoscopy clinicians in Chicago, Illinois

CMS lists 235 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
Mani Mahdavian, MD 506 99%
John Venetos, MD 341 97%
Samuel Castillo, MD 263 94%
Vivek Mehta, MD 262 94%
Alexander Tosiou, MD 231 92%
George Atia, MD 191 87%
David Manuel, MD 190 87%
John Gaetano, MD 154 81%
Roop Gupta, MD 153 81%
Arturo Olivera, MD 153 81%
Neil Gupta, MD 150 80%
Perry Kamel, MD 148 79%
Frank Martini, MD 146 79%
Khurram Qadir, MD 146 79%
Jamie Wabich, MD 141 78%
Tarun Patel, MD 139 77%
David Chua, MD 128 74%
Manuel Alva, MD 125 73%
Christian Stevoff, MD 123 72%
Carl Atallah, DO 121 72%
Michael Flicker, MD 117 70%
Stephen Steiner, MD 114 69%
Hao Zhang, MD 110 68%
Shailesh Bajaj, MD 108 67%
Neha Kaiser, DO 108 67%
Michael Uzer, MD 108 67%
Kenneth Oriordan, MD 107 67%
David Shapiro, MD 107 67%
Ashish Shah, MD 106 66%
Lawrence Gluskin, MD 105 66%
Stephen Chang, MD 98 63%
Jonathan Erlich, MD 97 63%
Raza Hamdani, MD 97 63%
Imad Elkhatib, MD 94 62%
Amritbhai Patel, MD 94 62%
Syed Zaidi, MD 90 60%
Thomas Lee, MD 88 59%
Domenico Farina, MD 85 58%
Terrance Rodrigues, MD 84 57%
Michael Brown, MD 83 57%
Kamran Heydarpour, MD 83 57%
Sameer Barkatullah, MD 82 56%
Andrew Albert, MD 80 55%
Srinadh Komanduri, MD 80 55%
Omar Nehme, MD 80 55%
Rajeev Nayar, MD 79 54%
Michael Goldberg, MD 75 52%
Rajesh Keswani, MD 74 52%
Eugene Yen, MD 74 52%
Mark De Meo, MD 72 51%
Yousef Nassar 72 51%
Uzma Siddiqui, MD 72 51%
Christopher Chapman, MD 71 50%
Stephanie Kalant, DO 71 50%
Neil Kapil, MD 71 50%
Tommy Pacana, MD 71 50%
Kiran Nimmagadda, MD 70 50%
Victor Udechukwu, MD 69 49%
Neal Mehta 66 47%
Charles Muller, MD 66 47%
Saad Saffo 65 47%
Jasmine Sinha, MD 65 47%
Manish Dhamija, MD 64 46%
Joseph Frasca, MD 64 46%
Paul Fahrenbach, MD 61 45%
Blake Jones, MD 60 44%
Farnaz Shariati, MD 60 44%
Asim Shuja, MD 60 44%
Luay Almassalha 59 44%
Darrien Gaston, MD 59 44%
Leila Kia, MD 59 44%
Ali Haider, MD 58 43%
Nina Gupta, MD 57 42%
Andrew Moore, MD 56 42%
Nathan Alhalel, MD 55 41%
Neil Sengupta, MD 55 41%
Maham Lodhi, MD 54 41%
Tenzin Choden, MD 53 40%
Darren Brenner, MD 52 40%
Adam Stein, MD 52 40%
Calvin Hall, MD 51 39%
Eric Montminy, MD 51 39%
David Butler, MD 50 38%
David Jarava, MD 50 38%
Salina Lee, MD 50 38%
Amanda Siegel, MD 50 38%
John Czarnecki, MD 49 38%
Peter Stanko, MD 49 38%
Abdul Aadam, MD 48 37%
Meghan Barrett-Englert, MD 48 37%
Grace Kim, MD 48 37%
Armani Patel, MD 48 37%
Krutika Lakhoo, MD 47 36%
Olufemi Kassim, MD 46 36%
Frances Puello, MD 46 36%
Anuhya Gampa 45 35%
Nidhi Singh, MD 45 35%
Itishree Trivedi, MD 45 35%
Daniel Berger, MD 44 34%
Russell Cohen, MD 44 34%
Joy Liu, MD 44 34%
Marian Skolarz, MD 44 34%
Mary Biglin, MD 43 34%
Kapuluru Reddy, MD 43 34%
Ajaypal Singh, MD 43 34%
Bradford Chong, MD 42 33%
Aava Khatiwada, MD 42 33%
Arun Verma, MD 42 33%
Stephen Hanauer, MD 41 32%
Thomas Nealis, MD 41 32%
Gregory Pajot, MD 41 32%
Alexander Hristov 40 32%
Kirbylee Nelson, MD 40 32%
Phithao Nguyen, MD 40 32%
David Rubin, MD 40 32%
Michael Ruchim, MD 40 32%
Atsushi Sakuraba, MD 40 32%
Jaimin Amin, MD 39 31%
Oscar Rivas Chicas, MD 39 31%
Rana Abraham, MD 38 30%
Nolan Faust, MD 38 30%
Dharani Guttikonda, MD 38 30%
Emanuelle Bellaguarda 37 30%
Dennis Chen, MD 37 30%
Edwin McDonald, MD 37 30%
Keith Naylor, MD 37 30%
Tarek Alansari, MD 36 29%
Kanika Garg 36 29%
Omar Jamil, MD 36 29%
Ross McMillan, MD 36 29%
Kenika Robinson, MD 36 29%
Ashley Vareedayah, MD 36 29%
Wojciech Blogowski, MD 35 28%
Sushila Dalal, MD 35 28%
Nimrod Deiss-Yehiely, MD 35 28%
Hemant Mutneja, MD 35 28%
Brian Boulay, MD 34 28%
Mohammad Fayyaz, MD 34 28%
Shilpa Kailas, MD 34 28%
Tariq Rahim, MD 34 28%
Arouj Bajwa, MD 33 27%
David Bromberg, MD 33 27%
Christopher Kasia, MD 33 27%
Anthony Merza, MD 33 27%
Maria Rosario Ferreira, MD 32 27%
Benjamin Levy, MD 32 27%
Alexander Pan, MD 32 27%
Gabriel Marrero Rivera, MD 31 26%
Ruchi Patel, MD 31 26%
Joel Pekow, MD 31 26%
Sujatha Kailas, MD 30 25%
Amit Patel, MD 30 25%
Aashesh Verma, MD 30 25%
Lalitha Sitaraman, MD 29 25%
Harold Boutte, MD 28 24%
Sophie Brigstocke, MD 28 24%
Maria El Gemayel, MD 28 24%
Sonia Kupfer, MD 28 24%
Rima Shobar, MD 27 23%
Nabeel Wahid 27 23%
Melchor Demetria, MD 26 23%
Adelina Hung, MD 26 23%
Christine Boumitri, MD 25 22%
Sandra Naffouj, MD 25 22%
Nisha Howarth, MD 24 21%
Irving Waxman, MD 24 21%
Jane Suh 23 21%
Ayokunle Abegunde, MD 22 20%
Mona Lalehzari, MD 22 20%
Ofer Fass, MD 21 20%
Ali Keshavarzian, MD 21 20%
Veena Nannegari, MD 21 20%
Zohair Ahmed, MD 20 19%
Benjamin McDonald, MD 20 19%
Faris Murad, MD 20 19%
Sharif Murphy, MD 20 19%
Ece Mutlu, MD 20 19%
Robin Fintel, MD 19 18%
Corey Ketchem, MD 19 18%
Vikram Kotwal, MD 19 18%
Ronak Patel, MD 19 18%
Yichun Fu, MD 18 18%
Julia Dyer, MD 17 17%
Ikechukwu Achebe, MD 16 16%
Alexandra Baumann, DO 16 16%
Ann Lee, MD 16 16%
Anna Lipowska, MD 15 16%
Laura Yun, MD 15 16%
Muhammed Alikhan, MD 14 15%
Carol Semrad, MD 14 15%
Robert Carroll, MD 13 14%
Noa Cleveland, MD 12 14%
Robert Kavitt, MD 12 14%
Wadih Chacra, MD 11 13%
Alice Cheng, MD 11 13%
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
Andres Duarte, MD 1-10 13% or below
Parambir Dulai, MD 1-10 13% or below
Steven Flamm, 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
Laura Kulik, MD 1-10 13% or below
Veronica Loy, DO 1-10 13% or below
Agnieszka Maniak, MD 1-10 13% or below
Randolph McConnie, 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
Nayeh Mirshed, 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
Mary Rinella, MD 1-10 13% or below
Hannah Roth, MD 1-10 13% or below
Steven Scaglione, 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
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.

Reported in previous releases

CMS does not report a colonoscopy volume for these clinicians in the October 2, 2026 release. Their pages show figures from earlier releases.

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).