Colonoscopy clinicians in Omaha, Nebraska

CMS lists 59 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 Omaha, Nebraska (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
John Cannella, MD	200	88%
Michael Schafer, MD	181	86%
Tyron Alli, MD	177	85%
Jordan Holmes, MD	168	84%
Trevor Pearson, MD	164	83%
Benjamin Hall, MD	136	76%
Grant Hutchins, MD	132	75%
Thomas McGinn, MD	132	75%
Kimberly Harmon, MD	127	73%
Derrick Eichele, MD	125	73%
Kyle Rose, DO	118	70%
Jason Cisler, MD	117	70%
Brian Ward, MD	110	68%
Rajani Rangray, MD	107	67%
Thoetchai Peeraphatdit, MD	106	66%
Matthew McMahon, MD	101	64%
Sheeva Parbhu, MD	98	63%
John Aita, MD	97	63%
Helen Fasanya-Uptagraft, MD	96	62%
Alexander Bernal, MD	95	62%
William Livingston, DO	92	61%
Marc Scheer, DO	92	61%
Wuttiporn Manatsathit, MD	90	60%
Alexander Hewlett, MD	89	59%
Robert Kizer, MD	89	59%
Deepti Jacob, MD	86	58%
Ahmed Al-Chalabi	84	57%
Aun Shah, MD	84	57%
Rebecca Ehlers, MD	83	56%
Rohtashav Dhir, MD	71	50%
Shailender Singh, MD	69	49%
Ishfaq Bhat, MD	67	48%
Timothy McCashland, MD	62	46%
Suha Jabak, MD	57	43%
Kathryn Hutchins, MD	55	42%
James Simmons, MD	55	42%
Jalpa Devi	52	40%
Sarah Malik	51	39%
Sandeep Mukherjee, MD	48	38%
Jay Anderson, MD	46	36%
Erin Jenkins, MD	42	34%
Derrick Antoniak, MD	37	31%
Joseph Thomas, MD	37	31%
Peter Mannon, MD	34	29%
Shiva Shankar Vangimalla	34	29%
Stephen Williams, MD	32	27%
Sampath Poreddy	29	25%
Gary Volentine, MD	29	25%
Jeremy King, DO	22	21%
Nathalie Khoury, MD	18	18%
Faruq Pradhan	15	16%
Marco Olivera-Martinez, MD	13	15%
Paul Glowacki, MD	1-10	13% or below
Omar Khan, MD	1-10	13% or below
Jimmy Morrison, MD	1-10	13% or below
Fedja Rochling, MD	1-10	13% or below
Hemant Roy, MD	1-10	13% or below
James Sullivan, MD	1-10	13% or below
Jered Windorski, 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).