Colonoscopy clinicians in Staten Island, New York

CMS lists 41 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 Staten Island, New York (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Daniel Megna, MD	343	97%
Sherif Farag, MD	293	96%
Lawrence Mancino, MD	262	94%
Igor Grosman, DO	258	94%
Sherif Andrawes, MD	238	93%
Alexander Brun, MD	236	92%
Konstantin Peysin	209	90%
Prateek Chapalamadugu, MD	207	90%
Lawrence Langan, MD	206	89%
Oleg Katcher, MD	186	87%
Liliane Deeb, MD	183	87%
Yevgeniy Mikityanskiy, DO	175	85%
Hassan Al Moussawi, MD	159	82%
Constantine Yiachos, MD	153	81%
Jean Chalhoub, MD	137	77%
Youssef El Douaihy, MD	134	76%
Sunil Patel, MD	125	73%
Nancy Chen, MD	105	66%
Konstantin Vaizman, MD	95	62%
Wallen Chan, MD	94	62%
Yousef Elfanagely, MD	89	59%
Alia Hasham, MD	81	55%
Deepak Vadada, MD	78	54%
Pawel Szurnicki, MD	65	47%
Mary Cheung, MD	64	46%
Prasanna Wickremesinghe	64	46%
Vahe Shahnazarian	63	46%
Magda Daoud, MD	60	44%
Kiranpreet Parmar, MD	52	40%
Inas Mikhail, MD	51	39%
Danial Daneshvar, MD	48	37%
Keith Dahl, DO	44	34%
Joseph Aboujaoude, MD	43	34%
Anu Sampat, MD	31	26%
Daniel Yeoun, DO	29	25%
Mohammad Abureesh, MD	1-10	13% or below
Bari Ceka, MD	1-10	13% or below
Pretam Rampersaud, MD	1-10	13% or below
Lucinda Ripoll, MD	1-10	13% or below
Joseph Roberts, MD	1-10	13% or below
Noreen Tan-Chu, 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.

Joseph Hederman, MD Last reported August 18, 2026

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).