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Colonoscopy clinicians in Philadelphia, Pennsylvania

CMS lists 174 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 Philadelphia, Pennsylvania (details below).

Colonoscopy volume

Clinician Colonoscopies billed Percentile rank
Daniel Sher, MD 339 97%
Raynard Cheung, MD 329 97%
Anthony Rosa, MD 322 97%
Matthew Cohen, MD 302 96%
Mark Codella, MD 268 95%
Oleg Volchonok, MD 268 95%
Jeffrey Pilchman, MD 257 94%
Corey Brotz, MD 242 93%
Gregory Schapiro, MD 241 93%
David Weinberg, MD 238 93%
Milind Vaze, MD 231 92%
Jorge Prieto, MD 230 92%
Immanuel Ho, MD 223 91%
Michael Lieb, MD 223 91%
Pawan Sahu, MD 220 91%
Minhhuyen Nguyen, MD 217 91%
Nicholas Orfanidis, MD 208 90%
James Walter, MD 208 90%
Keith Buhl, MD 200 89%
Monjur Ahmed, MD 195 88%
Kashif Tufail, MD 194 88%
Gregory Ginsberg, MD 192 88%
Malorie Simons, MD 192 88%
Jeffrey Abrams, MD 185 87%
Cesar De La Torre, MD 183 87%
Kashyap Panganamamula, MD 181 86%
Julia Binder, MD 175 85%
Shyam Patel, MD 173 85%
Maya Spodik, MD 173 85%
Stephen Kaufman, MD 170 84%
Jeffrey Berman, MD 166 84%
Debdeep Banerjee, MD 165 83%
Farzana Rashid, MD 165 83%
Frederick Nunes, MD 164 83%
Erin Toto, MD 158 82%
Anna Buchner, MD 156 81%
Christina Brown, MD 154 81%
Joseph Bruno, MD 153 81%
Robert Stein, MD 152 80%
Alexandra Weiss, MD 152 80%
Curtis Alloy, DO 151 80%
Tehilla Apfel, MD 150 80%
Gregg Gagliardi, MD 150 80%
Mohammed Shakhatreh, MD 148 79%
Mayada Ismail, MD 147 79%
Jean Padilla Aponte, MD 144 78%
Priyanka Sachdeva, MD 144 78%
Manoj Shirodkar, MD 143 78%
Christopher Schmoyer, MD 137 77%
Alan Mermelstein, MD 136 76%
Sarah Arvaneh, DO 135 76%
Tatiana Teslova, MD 134 76%
Shaman Dalal, MD 133 75%
Andrew Weber, MD 133 75%
Michael Davis, DO 132 75%
Jacob Lipkin, MD 131 75%
Cuckoo Choudhary, MD 129 74%
Cecilia Kelly, MD 128 74%
Pradip Cherian, MD 126 73%
Robert Dudnick, MD 126 73%
Sarah Coughlin, MD 124 73%
Nancy Khov, MD 123 72%
Benjamin Raile, MD 123 72%
Stephanie Moleski, MD 121 72%
Daniel Ringold, MD 119 71%
Nitin Ahuja, MD 118 71%
Leo Katz, MD 118 71%
Brianna Shinn, MD 116 70%
Yvette Achuo-Egbe, MD 115 70%
Ragunath Appasamy, MD 114 69%
Louis Broad, MD 110 68%
Shivani Thanawala, MD 110 68%
Aruj Choudhry, MD 108 67%
Radhakrishna Kalakuntla, MD 108 67%
Neilanjan Nandi, MD 108 67%
Nicholas Wilson, MD 106 66%
Tatiana Policarpo, MD 105 66%
Neeraj Anand 104 66%
Kristen Singer, MD 104 66%
Michael Goldberg, DO 103 65%
Jessica Sterling, MD 103 65%
Rajiv Bhuta, MD 90 60%
Michael Kochman, MD 90 60%
Louis Kishfy, MD 86 58%
Mark Malamood, MD 85 58%
Xiaoli Ma, MD 83 57%
Alexandra Selby, MD 82 56%
Peter Johnson, MD 80 55%
Gary Lichtenstein, MD 79 54%
David Kastenberg, MD 78 54%
Octavia Pickett-Blakely, MD 77 53%
Chau Che, MD 76 53%
Ernesto Robalino Gonzaga, MD 74 52%
Richard Denicola, MD 70 50%
Christine Chan, MD 69 49%
Yogesh Govil, MD 69 49%
Marc Hersh 67 48%
Ricardo Morgenstern, MD 67 48%
Marina Hines, MD 66 47%
Jonathan Katz, MD 65 47%
David Jaffe, MD 63 46%
Rishi Pawa, MD 63 46%
Zachary Reichenbach, MD 63 46%
David Zisa, MD 63 46%
Yasi Xiao, MD 62 45%
Laurel Fisher, MD 61 45%
David Lichtenstein, MD 60 44%
Alexandra Strauss, MD 60 44%
Holly Greenwald, MD 59 44%
Faten Aberra, MD 55 41%
Michael Pack, MD 54 41%
Adam Ehrlich, MD 53 40%
Katherine Duffey, MD 49 38%
Sara Colyer, MD 48 37%
Steven Leskowitz, MD 47 36%
Kristle Lynch, MD 47 36%
Chung Sang Tse, MD 47 36%
Stuart Lubinski, MD 46 36%
Amanda Pebenito, MD 46 36%
David Loren, MD 45 35%
Alice Pang, MD 45 35%
Nancy Graboyes-Leopold, MD 43 34%
Benjamin Krevsky, MD 42 33%
Christopher Henry, MD 41 32%
Neena Mohan, MD 40 32%
Sarjukumar Panchal, MD 37 30%
Priya Sehgal, MD 34 28%
Aaron Balinski, MD 31 26%
Jonathan Fenkel, MD 31 26%
James Lewis, MD 31 26%
Jonathan Nahas, MD 31 26%
Abraham Segura, MD 31 26%
Jesse Civan, MD 29 25%
Maarouf Hoteit, MD 27 23%
Meenakshi Bewtra, MD 26 23%
Kelley Weinfurtner, MD 24 21%
Ghideon Ezaz, MD 23 21%
Shazia Siddique, MD 23 21%
Dina Halegoua De Marzio, MD 22 20%
Shivan Mehta, MD 20 19%
Yedidya Saiman, MD 20 19%
Divya Ayyala-Somayajula, MD 19 18%
Maria Lagarde Mussa, MD 19 18%
Ben Stanger, MD 19 18%
David Kaplan, MD 18 18%
Justin Derosa, DO 17 17%
Ethan Weinberg, MD 17 17%
Nuzhat Ahmad, MD 16 16%
Junghyun Lim, MD 15 16%
Francisco Toledo 15 16%
Kimberly Forde, MD 14 15%
David Sass, MD 13 14%
Rebecca Loh, MD 11 13%
Henry Parkman, MD 11 13%
Manish Thapar, MD 11 13%
Izat Al-Bacha Hjazi, MD 1-10 13% or below
Ijlal Akbar Ali, MD 1-10 13% or below
Nicole Belle, MD 1-10 13% or below
Jefferson Brownell, MD 1-10 13% or below
Chakradhar Chandrupatla, MD 1-10 13% or below
Stephanie Chery, MD 1-10 13% or below
Caroline Conlon, MD 1-10 13% or below
Jacque Curtis, MD 1-10 13% or below
Ewa Fabiszewska, MD 1-10 13% or below
Sean Harbison, MD 1-10 13% or below
Arati Karnik, MD 1-10 13% or below
Ronald Leonard, MD 1-10 13% or below
Nadim Mahmud, MD 1-10 13% or below
Petar Mamula, MD 1-10 13% or below
Tess Petersen, MD 1-10 13% or below
George Pitsakis, DO 1-10 13% or below
Kenneth Rothstein, MD 1-10 13% or below
Aziz Sadiq, DO 1-10 13% or below
Andrew Sanderson, 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).