Colonoscopy clinicians in Saint Louis, Missouri

CMS lists 127 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 Saint Louis, Missouri (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Picha Moolsintong, MD	324	97%
Sajidul Ansari, MD	270	94%
Hugo Villarreal, MD	267	94%
Francisco Tagle	181	86%
Barry Abramson, MD	167	84%
Ayodele Osowo, MD	141	78%
Joel Riley, MD	129	74%
James Dimitroff, MD	127	73%
Naeem Aslam, MD	126	73%
Giao Vuong, MD	125	73%
Youssef Assioun, MD	112	68%
Jhony Doumit, MD	112	68%
Olufemi Abiodun, MD	109	67%
Jonathan Seccombe, MD	99	64%
Ruben Aymerich, MD	98	63%
Michael Cleary, MD	92	61%
Khalid Naseer, MD	92	61%
Patrick McDonough, MD	90	60%
Diego Lim, MD	86	58%
Olayiwola Olagbegi, MD	82	56%
Michael Zerega, MD	81	55%
Paul Buse, MD	80	55%
Vladimir Kushnir, MD	80	55%
Michael Clanahan, MD	76	53%
Benjamin Schmidt, MD	75	52%
Kishore Maganty, MD	74	52%
Mohammed Eyad Alsabbagh, MD	73	51%
Devika Kapuria, MD	72	51%
Ted Walker	71	50%
Elizabeth Huebner, MD	66	48%
Eldad Bialecki, MD	65	47%
Yazan Abdalla, MD	64	47%
Rajesh Shah, MD	64	47%
Faiza Bhatti, MD	62	46%
Marina Kim, DO	61	45%
Michael Bennett, MD	60	45%
Arvind Rengarajan, MD	60	45%
Hani El-Halawany, MD	59	44%
Gabriel Lang, MD	59	44%
Manar Shmais, MD	59	44%
David Ulrich, MD	59	44%
Yezaz Ghouri, MD	58	44%
Hadiatou Barry, MD	57	43%
Mark Pankonin, MD	55	42%
Anas Gremida, MD	53	41%
Tariq Hassan, MD	52	40%
Aireen-Ronalda Agulto, MD	51	39%
Tarek Nammour, MD	51	39%
William Goldkamp, MD	50	39%
Laura Ulmer, DO	48	38%
Badr Alhumayyd, MD	47	37%
Antonio Cheesman Rocca, MD	47	37%
Martin Gregory, MD	47	37%
Gila Hoffman, MD	46	36%
Chien-Huan Chen, MD	45	36%
Dayna Early, MD	45	36%
Michelle Baliss, DO	44	35%
Adam Farmer, MD	44	35%
Mate Gergely, MD	43	34%
Catherine Howe, MD	43	34%
Osama Altayar, MD	41	33%
Mei Huang, MD	40	33%
Christina Kratschmer, MD	40	33%
Judy Trieu, MD	40	33%
Nicole Shen, MD	39	32%
Koushik Das, MD	38	31%
Surachai Amornsawadwattana, MD	37	31%
Elizabeth Blaney, MD	37	31%
Mohammad Tarik Firozi, MD	37	31%
Marc Bernstein, MD	36	30%
Paul King, MD	36	30%
Wissam Kiwan, MD	36	30%
Jason Taylor	36	30%
Melis Celdir, MD	35	29%
Preet Bagi, MD	34	29%
Faisal Bukeirat, MD	34	29%
Mohammad Ismail, MD	34	29%
Katie Schroeder, MD	34	29%
Cassandra Fritz, MD	33	28%
Mike Giacaman, MD	33	28%
Samer Al-Kaade, MD	32	27%
Benjamin Rogers, MD	31	27%
Parth Shah, MD	31	27%
Gassan Kassim, MD	30	26%
Alex Befeler, MD	29	25%
Jennifer Palagiri, MD	29	25%
Roshani Desai, MD	28	25%
Kayci Huff-Hardy, MD	28	25%
Samuel Burton, MD	27	24%
Ashirf Al-Ghanoudi, MD	26	23%
Parakkal Deepak, MD	26	23%
Charlene Prather, MD	26	23%
Emily Reznicek, DO	26	23%
Aaron Greenspan, MD	25	23%
Scott McHenry, MD	25	23%
Alfred Nelson, MD	25	23%
Richa Bhardwaj, MD	23	22%
Leen Al-Sayyed, MD	21	20%
Jean Wang, MD	21	20%
Chandra Gyawali, MD	20	19%
Jose Saenz, MD	20	19%
Fred Karaisz, MD	19	19%
Brent Neuschwander-Tetri, MD	18	18%
Banke Agarwal, MD	17	17%
Hany Elbeshbeshy, MD	17	17%
Sandeep Tripathy, MD	17	17%
Zenan Chang, MD	16	17%
Kevin Korenblat, MD	14	15%
Quazim Alayo, MD	13	15%
Ahmad Najdat Bazarbashi, MD	13	15%
Jeffrey Brown, MD	13	15%
Lindsay Meurer, MD	13	15%
Rodney Newberry, MD	13	15%
Megan White, MD	13	15%
Jacquelyn Fleckenstein, MD	11	13%
Uchenna Agbim, MD	1-10	13% or below
Siyan Cao	1-10	13% or below
Matthew Ciorba, MD	1-10	13% or below
Benjamin Clement, MD	1-10	13% or below
Jeffrey Crippin, MD	1-10	13% or below
Athanasios Desalermos, MD	1-10	13% or below
Shannon Joerger, MD	1-10	13% or below
Vivian Ortiz, MD	1-10	13% or below
Jason Pan, MD	1-10	13% or below
Helen Pappa, MD	1-10	13% or below
Kamran Qureshi, MD	1-10	13% or below
Richard Rood, 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).