Colonoscopy clinicians in Hartford, Connecticut

CMS lists 66 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 Hartford, Connecticut (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Kenneth Mauer, MD	310	96%
Alan Selkin, MD	269	94%
Felice Zwas, MD	267	94%
Neda Khaghan, MD	225	91%
William Coll, MD	218	91%
Stuart Waldstreicher, MD	207	89%
Neal Schamberg, MD	204	89%
Ajit Kokkat, MD	189	87%
John Frese, MD	181	86%
Eugene Sapozhnikov, MD	177	85%
Mical Campbell, MD	175	85%
David Chaletsky, MD	175	85%
Strick Woods, MD	166	83%
Ali Hemacha, MD	154	81%
Amzad Khan, MD	153	81%
Michael Selden, MD	153	81%
Julie Spivack, MD	139	77%
Donna Cipolla, MD	136	76%
You Sung Sang, MD	120	71%
Marcy Qureshi, DO	115	69%
Andrew Antony, MD	112	68%
Shivani Sood, MD	111	68%
Jefrey Salek, MD	105	66%
Rohit Singhania, MD	105	66%
Cassidy Alexandre, MD	103	65%
Nicholas Lillo, MD	102	65%
Scott Kramer, MD	99	64%
Gena Cobrin, MD	96	62%
Maria Johnson, MD	95	62%
Suma Magge, MD	94	62%
Jonathan Williamson, MD	94	62%
Jeffrey Nestler, MD	93	61%
Tonya Hall	92	61%
Abera Abay, MD	91	60%
Tarun Gupta, MD	87	58%
Vaibhav Mehendiratta, MD	87	58%
Neil Parikh, MD	86	58%
Daniel Smiley, MD	85	57%
Emil Blanco, MD	83	56%
Osama Siddique, MD	82	56%
Colin Swales, MD	80	55%
Mark Versland	73	51%
Nihal Patel, MD	67	48%
Mohammad Alshelleh, MD	60	45%
Joseph Cappa, MD	59	44%
Salam Zakko, MD	59	44%
Michael Karasik, MD	58	44%
Marianna Scranton, DO	57	43%
Daniel Stupak, MD	56	42%
Michael Golioto, MD	54	41%
Krzysztof Kopec, MD	54	41%
Eddy Castillo, MD	50	39%
Yousaf Shaikh, MD	49	38%
Jenna Koliani-Pace, MD	47	37%
Lisa Rossi, MD	45	36%
Michael Einstein, MD	39	32%
Prabin Sharma	39	32%
Michael Butensky, MD	33	28%
Martin Hoffman, DO	29	25%
Nancy Kang, MD	28	25%
Amir Masoud, MD	15	16%
Adel Muhanna, MD	15	16%
Golam Gazi, MD	1-10	13% or below
Elizabeth Richardson, DO	1-10	13% or below
Mayra Sanchez De La Cruz, MD	1-10	13% or below
Eva Urtasun Sotil, 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).