Colonoscopy clinicians in Louisville, Kentucky

CMS lists 44 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 Louisville, Kentucky (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Brian Dobozi, MD	201	89%
Jeffrey Tuvlin, MD	200	88%
Nanlong Liu, MD	187	87%
Frederick Hardin, MD	179	86%
Brian Beauerle, MD	164	83%
Laszlo Makk, MD	164	83%
Michael Krease, DO	156	81%
Jonathan Obert, MD	149	80%
Gerard Siciliano, MD	143	78%
Alan Cox, MD	138	77%
Lauren Briley, MD	137	76%
John Horlander, MD	126	73%
Michael Greenwell, MD	116	70%
Endashaw Omer, MD	102	65%
Thomas Coppola, DO	94	62%
Ross Deppe, MD	89	59%
Anand Gupta, MD	89	59%
Alison Sharpe, DO	89	59%
John Brown, MD	85	57%
Sunana Sohi, MD	84	57%
Bhargab Dixit, MD	72	51%
Collin Henry, MD	68	49%
Sanjay Jain, MD	68	49%
Loretta Jophlin, MD	68	49%
Stephen Overstreet, MD	68	49%
Jason Slate, MD	65	47%
Sarah Landes, MD	63	46%
William Evans, MD	62	46%
Kristine Krueger, MD	56	42%
Abigail Stocker	52	40%
Raja Kaikaus, MD	48	38%
Brandon Wuerth, MD	39	32%
Dylan Gerlach, DO	38	31%
Benjamin Rogers, MD	31	27%
Brett Rossow, MD	27	24%
Stephen McClave, MD	26	23%
Lucia Rivera Matos	25	23%
Prateek Mathur, MD	21	20%
Tracey Wolford	19	19%
Gerald Dryden, MD	12	14%
Ashutosh Barve, MD	1-10	13% or below
Matthew Cave, MD	1-10	13% or below
Luis Marsano, MD	1-10	13% or below
Michael Schoech, 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).