Colonoscopy clinicians in Philadelphia, Pennsylvania

CMS lists 183 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
Oleg Volchonok, MD	342	97%
Daniel Sher, MD	340	97%
Kenneth Breslin, MD	327	97%
Raynard Cheung, MD	311	96%
Matthew Cohen, MD	276	95%
Anthony Rosa, MD	276	95%
Milind Vaze, MD	271	95%
Michael Dimarino, MD	266	94%
Keith Buhl, MD	263	94%
Mark Codella, MD	249	93%
Michael Lieb, MD	241	93%
Corey Brotz, MD	239	93%
Minhhuyen Nguyen, MD	239	93%
Robert Coben, MD	238	92%
Pawan Sahu, MD	234	92%
Nicholas Orfanidis, MD	231	92%
Jorge Prieto, MD	230	92%
Kashif Tufail, MD	229	92%
Malorie Simons, MD	227	91%
Immanuel Ho, MD	215	90%
David Weinberg, MD	215	90%
Kashyap Panganamamula, MD	212	90%
James Walter, MD	210	90%
Gregory Ginsberg, MD	208	89%
Frederick Nunes, MD	207	89%
Gregory Schapiro, MD	207	89%
Jeffrey Abrams, MD	205	89%
Jeffrey Pilchman, MD	205	89%
Mohammed Shakhatreh, MD	199	88%
Julia Binder, MD	189	87%
Shyam Patel, MD	184	86%
Stephen Kaufman, MD	180	86%
Monjur Ahmed, MD	177	85%
Jeffrey Berman, MD	174	85%
Radhakrishna Kalakuntla, MD	174	85%
Cesar De La Torre, MD	171	84%
Maya Spodik, MD	171	84%
Erin Toto, MD	170	84%
Robert Stein, MD	169	84%
Debdeep Banerjee, MD	165	83%
Mayada Ismail, MD	162	82%
Sarah Arvaneh, DO	161	82%
Jean Padilla Aponte, MD	155	81%
Alan Mermelstein, MD	154	81%
Andrew Weber, MD	152	80%
Nancy Khov, MD	148	80%
Michael Davis, DO	147	79%
Tehilla Apfel, MD	146	79%
Manoj Shirodkar, MD	146	79%
Gregg Gagliardi, MD	145	79%
Farzana Rashid, MD	144	79%
Curtis Alloy, DO	142	78%
Christina Brown, MD	142	78%
Joseph Bruno, MD	142	78%
Anna Buchner, MD	142	78%
Alexandra Weiss, MD	141	78%
Leo Katz, MD	140	77%
Christopher Schmoyer, MD	139	77%
Jacob Lipkin, MD	137	76%
Cecilia Kelly, MD	136	76%
Pradip Cherian, MD	135	76%
Anand Kumar, MD	135	76%
Daniel Ringold, MD	133	75%
Yvette Achuo-Egbe, MD	132	75%
Robert Dudnick, MD	132	75%
Neilanjan Nandi, MD	130	74%
Sarah Coughlin, MD	126	73%
Jessica Sterling, MD	126	73%
Nitin Ahuja, MD	125	73%
Faisal Kamal, MD	124	73%
Ragunath Appasamy, MD	123	72%
Michael Goldberg, DO	121	71%
Shaman Dalal, MD	120	71%
Patricia Kozuch, MD	119	71%
Tatiana Teslova, MD	119	71%
Shivani Thanawala, MD	119	71%
Cuckoo Choudhary, MD	117	70%
Brianna Shinn, MD	117	70%
Tatiana Policarpo, MD	115	69%
Christopher Adkins, MD	112	68%
Priyanka Sachdeva, MD	112	68%
Stephanie Moleski, MD	110	68%
Kristen Singer, MD	110	68%
Mark Malamood, MD	105	66%
Xiaoli Ma, MD	104	66%
Benjamin Raile, MD	104	66%
Michael Kochman, MD	102	65%
Rajiv Bhuta, MD	100	64%
David Kastenberg, MD	100	64%
Alexander Schlachterman, MD	100	64%
Octavia Pickett-Blakely, MD	99	64%
Nicholas Wilson, MD	95	62%
Christine Chan, MD	94	62%
Chau Che, MD	93	61%
Aaron Martin, MD	92	61%
Louis Broad, MD	91	60%
Richard Denicola, MD	91	60%
Louis Kishfy, MD	90	60%
Yogesh Govil, MD	88	59%
Alexandra Selby, MD	88	59%
Alice Pang, MD	82	56%
Yasi Xiao, MD	82	56%
Faten Aberra, MD	81	55%
Marina Hines, MD	81	55%
Gary Lichtenstein, MD	79	54%
Stuart Lubinski, MD	78	54%
Holly Greenwald, MD	75	52%
Zachary Reichenbach, MD	72	51%
Chung Sang Tse, MD	68	49%
David Jaffe, MD	67	48%
Alexandra Strauss, MD	66	48%
David Zisa, MD	66	48%
Rishi Pawa, MD	65	47%
Laurel Fisher, MD	64	47%
David Loren, MD	62	46%
Neeraj Anand	60	45%
Steven Leskowitz, MD	58	44%
David Lichtenstein, MD	55	42%
Ernesto Robalino Gonzaga, MD	55	42%
Priya Sehgal, MD	55	42%
Ricardo Morgenstern, MD	51	39%
Jonathan Katz, MD	50	39%
Adam Ehrlich, MD	48	38%
Sara Colyer, MD	47	37%
Benjamin Krevsky, MD	46	36%
James Lewis, MD	46	36%
Christopher Henry, MD	44	35%
Abraham Segura, MD	44	35%
Austin Chiang, MD	43	34%
Neena Mohan, MD	43	34%
Nancy Graboyes-Leopold, MD	41	33%
Marc Hersh	39	32%
Kristle Lynch, MD	39	32%
Michael Pack, MD	39	32%
Jesse Civan, MD	38	31%
Peter Johnson, MD	38	31%
Raina Shivashankar, MD	37	31%
Ronald Leonard, MD	36	30%
Meenakshi Bewtra, MD	32	27%
Amanda Pebenito, MD	32	27%
Dina Halegoua De Marzio, MD	28	25%
Maarouf Hoteit, MD	28	25%
Jonathan Nahas, MD	28	25%
David Sass, MD	25	23%
Katherine Duffey, MD	24	22%
Kelley Weinfurtner, MD	24	22%
Rebecca Loh, MD	23	22%
Jonathan Fenkel, MD	22	21%
Francisco Toledo	22	21%
Divya Ayyala-Somayajula, MD	21	20%
Yedidya Saiman, MD	21	20%
David Kaplan, MD	20	19%
Justin Derosa, DO	19	19%
Maria Lagarde Mussa, MD	19	19%
Shivan Mehta, MD	19	19%
Aaron Balinski, MD	18	18%
Ghideon Ezaz, MD	18	18%
Ben Stanger, MD	18	18%
Ethan Weinberg, MD	18	18%
Sarjukumar Panchal, MD	17	17%
Shazia Siddique, MD	17	17%
Danielle Tholey, MD	17	17%
Junghyun Lim, MD	15	16%
Nuzhat Ahmad, MD	14	15%
Henry Parkman, MD	13	15%
Ijlal Akbar Ali, MD	12	14%
Manish Thapar, MD	11	13%
Varun Aggarwal, MD	1-10	13% or below
Izat Al-Bacha Hjazi, MD	1-10	13% or below
Nicole Belle, 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
Kimberly Forde, MD	1-10	13% or below
Thomas Kowalski, MD	1-10	13% or below
Petar Mamula, MD	1-10	13% or below
Mary Clare Parrott, DO	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
Michael Taddonio, DO	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).