Colonoscopy clinicians in Las Vegas, Nevada

CMS lists 51 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 Las Vegas, Nevada (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Vishal Gandotra, MD	1,075	99%
Tousif Pasha, MD	764	99%
Mohammed Shafi, MD	461	99%
Michael Zimmerman, MD	454	99%
Andrew Kim, MD	391	98%
Noel Fajardo, MD	272	95%
Filippo Cremonini, MD	250	93%
Tarek Ammar, MD	244	93%
Vijay Jayaraman, MD	224	91%
Ghulam Mujtaba, MD	215	90%
David Shih, MD	215	90%
Muthena Maklad, MD	213	90%
Gregory Kwok, MD	208	89%
Deb Mukhopadhyay, MD	176	85%
Ayaaz Ismail, MD	171	84%
John Ryan, MD	161	82%
Syed Abdul Basit, MD	153	81%
Frank Faris, MD	151	80%
Frank Nemec, MD	147	79%
Christian Stone, MD	144	79%
Gary Chen, MD	138	77%
Matthew Glover, MD	136	76%
Nicolae Weisz, MD	132	75%
Travis Vickers, DO	131	75%
Enrique Lacayo, MD	129	74%
Laura Gitlin, MD	113	69%
Brent Burnette, MD	100	64%
Gayatri Vengayil, MD	100	64%
Yakov Shaposhnikov, MD	93	61%
Donald Kwok, MD	90	60%
George Tan, MD	84	57%
James Han, MD	79	54%
Gilberto De La Torre, MD	67	48%
Kaio Ferreira, MD	66	48%
Christopher Chang, MD	57	43%
Chaorui Tian, MD	40	33%
Sang Lee, MD	38	31%
Martin Shill, MD	38	31%
Mara Posner, MD	36	30%
Vignan Manne, MD	35	29%
Katrina Naik, MD	32	27%
Jose Aponte Pieras, MD	22	21%
Gordon Ohning, MD	21	20%
Henry Chiu, MD	20	19%
Thomas Chen, MD	17	17%
Vinod Singh, MD	17	17%
Juan Trivella, MD	14	15%
Suaka Kagbo-Kue, MD	1-10	13% or below
Joseph Redman, MD	1-10	13% or below
Malwinder Sidhu, MD	1-10	13% or below
Amit Valera, 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).