Colonoscopy clinicians in Akron, Ohio

CMS lists 38 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 Akron, Ohio (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Jeffrey Gellis	234	92%
Gbeminiyi Samuel, MD	191	87%
Christopher Pluskota, DO	165	83%
Ganesh Veerappan, MD	164	83%
Sayed Khatami, MD	158	82%
Scott Fulton, MD	152	80%
Alexander Pontikos	137	77%
Costas Kefalas, MD	131	75%
Saleem Chowdhry	127	74%
Jennifer Phemister, MD	127	74%
Jonathan Hlivko, MD	124	73%
Abdullahi Musa, MD	99	64%
Muhannad Heif, MD	98	63%
David Mossad, MD	92	61%
Brooke Glessing, MD	91	60%
William Shaheen, MD	91	60%
Amandeep Singh, MD	85	58%
Jeffrey Neher, MD	79	54%
Abdallah Kobeissy, MD	78	54%
Kristin Gaffney, DO	71	50%
Julia Thornton, MD	65	47%
Mary-Jane Williams, MD	59	44%
Mohammad Shakhatreh, MD	53	40%
Dalbir Sandhu, MD	52	40%
Andrew Ofosu, MD	46	36%
Douglas Weissman, MD	44	34%
Frances Charlene Horenstein, MD	41	32%
Gayleen Kolaczewski, MD	37	30%
Christie Blanton, MD	34	28%
Devjit Nayar, MD	32	27%
Kishore Gaddipati, MD	30	25%
Vijay Bhaskar Gayam, MD	30	25%
Abubaker Abdalla, MD	27	23%
Joseph Fletcher	21	20%
Samiullah Samiullah, MD	21	20%
Mohamed Ahmed, MD	11	13%
John Grisham, MD	1-10	13% or below
Gengqing Song, 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.

Lisa Schroeder, 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).