Colonoscopy clinicians in Scottsdale, Arizona

CMS lists 88 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 Scottsdale, Arizona (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Stuart Triester, MD	470	99%
Anuj Vyas, DO	402	98%
Gavin Levinthal, MD	337	97%
Erika Boroff, MD	299	96%
Bradford Jones, MD	286	95%
Suzanne Skoog, MD	286	95%
Layth Al-Jashaami, MD	245	93%
Emma Castillo, MD	236	92%
Adam Harris, MD	230	92%
Daniel Meline, MD	227	91%
Amar Thosani, MD	227	91%
Siva Talluri, MD	224	91%
Jagdish Patel, MD	203	89%
Malvinderjit Singh, MD	189	87%
Rucha Shah, MD	184	86%
Sara Ancello, DO	183	86%
Alexander Lee, MD	178	85%
Douglas Schwartz, MD	172	84%
Alhareth Al Juboori, MD	161	82%
Michele Lewis, MD	160	82%
Akshay Shah, MD	159	82%
Deepa Shah, MD	158	82%
Akash Nabh, MD	157	82%
Anil Seetharam, MD	153	81%
David Tessler, DO	153	81%
Suryakanth Gurudu, MD	143	78%
Jyotsna Ravi, MD	142	78%
Nayan Patel, DO	138	77%
Jose Machain Palacio, MD	134	76%
Terry Jue, MD	130	74%
Christina Ha, MD	129	74%
David Leff, DO	124	73%
Shaji Kazi, MD	123	72%
Carlos Zapata Antigoni, MD	117	70%
Shashank Garg, MD	116	70%
Talha Malik, MD	114	69%
Natalee Campbell, MD	112	68%
Cuong Nguyen, MD	111	68%
Prabhakar Swaroop, MD	103	65%
Matthew Jackson, DO	101	64%
Janet Reiser, MD	97	63%
Rosita Frazier, MD	95	62%
Wissam Mattar, MD	92	61%
Shabana Pasha, MD	90	60%
Abdul Nadir, MD	89	59%
Tisha Lunsford, MD	88	59%
Jay Mellen, MD	88	59%
Andree Koop, MD	86	58%
Sirish Rao, MD	80	55%
Manreet Kaur, MD	76	53%
Navroop Nagra, MD	75	52%
Marcelo Vela Aquino, MD	72	51%
Norio Fukami, MD	69	49%
William Hasler, MD	69	49%
Vijay Singh, MD	69	49%
Marion Harrison, MD	65	47%
Jennifer Horsley Silva, MD	65	47%
Douglas Faigel, MD	64	47%
Neena Abraham, MD	62	46%
Mashal Batheja, MD	61	45%
Yilien Alonso, MD	56	42%
Lucinda Harris, MD	54	41%
John Dibaise, MD	52	40%
Guilherme Piovezani Ramos, MD	47	37%
Michelle Anderson, MD	46	36%
Sarah Umar, MD	46	36%
Prasad Iyer, MD	45	36%
Niloy Samadder, MD	42	34%
Allon Kahn, MD	38	31%
Kevin Ruff, MD	35	29%
Siddharth Singh, MD	32	27%
Rahul Pannala, MD	31	27%
Francisco Ramirez, MD	31	27%
Shiv Verma, MD	30	26%
Kenneth Diamond, MD	24	22%
Channa Jayasekera, MD	24	22%
Elizabeth Carey, MD	23	22%
David Chascsa, MD	20	19%
Rolland Dickson, MD	20	19%
Bashar Aqel, MD	18	18%
Michele Barnhill, MD	17	17%
David Douglas, MD	17	17%
Anna Silverman, MD	17	17%
William Faubion, MD	16	17%
Blanca Lizaola- Mayo, MD	15	16%
Jonathan Leighton, MD	13	15%
Hugo Vargas, MD	1-10	13% or below
Evan Wilder, 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).