Colonoscopy clinicians in Saint Louis, Missouri

CMS lists 128 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	390	98%
Sajidul Ansari, MD	337	97%
Hugo Villarreal, MD	248	93%
Francisco Tagle	177	85%
Barry Abramson, MD	150	80%
Joel Riley, MD	143	78%
Jhony Doumit, MD	140	77%
Ayodele Osowo, MD	121	72%
Giao Vuong, MD	121	72%
Youssef Assioun, MD	118	71%
Naeem Aslam, MD	115	70%
Ruben Aymerich, MD	110	68%
Olufemi Abiodun, MD	109	67%
Jonathan Seccombe, MD	99	64%
Michael Clanahan, MD	84	57%
Diego Lim, MD	84	57%
Elizabeth Huebner, MD	83	57%
Khalid Naseer, MD	83	57%
Michael Zerega, MD	82	56%
Mohammed Eyad Alsabbagh, MD	81	55%
Kishore Maganty, MD	81	55%
Patrick McDonough, MD	81	55%
Benjamin Schmidt, MD	80	55%
Yazan Abdalla, MD	78	54%
Michael Cleary, MD	77	53%
Vladimir Kushnir, MD	75	52%
Olayiwola Olagbegi, MD	74	52%
Paul Buse, MD	71	50%
Aireen-Ronalda Agulto, MD	69	49%
Badr Alhumayyd, MD	65	47%
Gabriel Lang, MD	63	46%
David Ulrich, MD	62	45%
Michael Bennett, MD	61	45%
Anas Gremida, MD	61	45%
Devika Kapuria, MD	60	44%
Faiza Bhatti, MD	59	44%
Marina Kim, DO	59	44%
Rajesh Shah, MD	59	44%
Arvind Rengarajan, MD	58	43%
James Dimitroff, MD	57	42%
Ted Walker	57	42%
Hani El-Halawany, MD	56	42%
Dayna Early, MD	55	41%
Yezaz Ghouri, MD	55	41%
Osama Altayar, MD	54	41%
Gassan Kassim, MD	53	40%
William Goldkamp, MD	52	40%
Michelle Baliss, DO	51	39%
Nizar Charafeddine, MD	50	38%
Chien-Huan Chen, MD	50	38%
Melis Celdir, MD	49	38%
Mark Pankonin, MD	49	38%
Jason Taylor	48	37%
Manar Shmais, MD	47	36%
Martin Gregory, MD	46	36%
Katie Schroeder, MD	46	36%
Laura Ulmer, DO	46	36%
Gila Hoffman, MD	44	34%
Tarek Nammour, MD	44	34%
Mate Gergely, MD	43	34%
Wissam Kiwan, MD	43	34%
Elizabeth Blaney, MD	42	33%
Antonio Cheesman Rocca, MD	41	32%
Koushik Das, MD	41	32%
Mohammad Tarik Firozi, MD	41	32%
Christina Kratschmer	41	32%
Adam Farmer, MD	40	32%
Hadiatou Barry, MD	39	31%
Cassandra Fritz, MD	37	30%
Catherine Howe, MD	37	30%
Kayci Huff-Hardy, MD	37	30%
Tariq Hassan, MD	35	28%
Parth Shah, MD	35	28%
Surachai Amornsawadwattana, MD	33	27%
Nicole Shen, MD	33	27%
Faisal Bukeirat, MD	32	27%
Samuel Burton, MD	32	27%
Mike Giacaman, MD	32	27%
Aaron Greenspan, MD	32	27%
Paul King, MD	32	27%
Roshani Desai, MD	30	25%
Mei Huang, MD	30	25%
Jennifer Palagiri, MD	30	25%
Jean Wang, MD	29	25%
Mohammad Ismail, MD	27	23%
Benjamin Rogers, MD	27	23%
Emily Reznicek, DO	26	23%
Samer Al-Kaade, MD	25	22%
Leen Al-Sayyed, MD	25	22%
Preet Bagi, MD	24	21%
Richa Bhardwaj, MD	24	21%
Alfred Nelson, MD	24	21%
Judy Trieu, MD	24	21%
Eldad Bialecki, MD	23	21%
Scott McHenry, MD	22	20%
Ashirf Al-Ghanoudi, MD	21	20%
Marc Bernstein, MD	21	20%
Fred Karaisz	21	20%
Charlene Prather, MD	21	20%
Alex Befeler, MD	20	19%
Brent Neuschwander-Tetri, MD	20	19%
Sandeep Tripathy, MD	20	19%
Parakkal Deepak, MD	18	18%
Chandra Gyawali, MD	18	18%
Lindsay Meurer, MD	17	17%
Rodney Newberry, MD	17	17%
Quazim Alayo, MD	16	16%
Jose Saenz, MD	16	16%
Siyan Cao	15	16%
Benjamin Clement, MD	14	15%
Jeffrey Brown, MD	13	14%
Jacquelyn Fleckenstein, MD	11	13%
Kevin Korenblat, MD	11	13%
Banke Agarwal, MD	1-10	13% or below
Uchenna Agbim, MD	1-10	13% or below
Riad Azar, MD	1-10	13% or below
Ahmad Najdat Bazarbashi, MD	1-10	13% or below
Zenan Chang, MD	1-10	13% or below
Ju Yeon Cho, MD	1-10	13% or below
Matthew Ciorba, MD	1-10	13% or below
Jeffrey Crippin, MD	1-10	13% or below
Athanasios Desalermos, MD	1-10	13% or below
Sami Elamin	1-10	13% or below
Hany Elbeshbeshy, MD	1-10	13% or below
Vivian Ortiz, MD	1-10	13% or below
Kamran Qureshi, MD	1-10	13% or below
Richard Rood, MD	1-10	13% or below
Megan White, 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.

Shannon Joerger, MD Last reported August 18, 2026
Helen Pappa, 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).