Colonoscopy clinicians in Akron, Ohio

CMS lists 35 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	210	90%
Gbeminiyi Samuel, MD	191	87%
Scott Fulton, MD	148	80%
Sayed Khatami, MD	146	79%
Ganesh Veerappan, MD	143	78%
Christopher Pluskota, DO	133	75%
Costas Kefalas, MD	128	74%
Saleem Chowdhry	121	71%
Alexander Pontikos	121	71%
Jonathan Hlivko, MD	120	71%
Muhannad Heif, MD	113	69%
Brooke Glessing, MD	104	66%
William Shaheen, MD	92	61%
Abdallah Kobeissy, MD	87	58%
David Mossad, MD	84	57%
Jeffrey Neher, MD	80	55%
Abdullahi Musa, MD	76	53%
Amandeep Singh, MD	74	52%
Julia Thornton, MD	66	48%
Dalbir Sandhu, MD	64	47%
Douglas Weissman, MD	53	41%
Frances Charlene Horenstein, MD	52	40%
Devjit Nayar, MD	47	37%
Andrew Ofosu, MD	44	35%
Mohammad Shakhatreh, MD	44	35%
Gayleen Kolaczewski, MD	39	32%
Omer Basar, MD	28	25%
Vijay Bhaskar Gayam, MD	26	23%
Samiullah Samiullah, MD	24	22%
Abubaker Abdalla, MD	22	21%
Joseph Fletcher	21	20%
Gengqing Song, MD	17	17%
Kishore Gaddipati, MD	16	17%
John Grisham, MD	1-10	13% or below
Lisa Schroeder, 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).