Colonoscopy clinicians in Greenville, South Carolina

CMS lists 46 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 Greenville, South Carolina (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Einar Lurix, MD	456	99%
Seid Mirmiran-Yazdy, MD	390	98%
Ross Sage	197	88%
Joseph Lebel, MD	183	86%
Lawrence Hartley, MD	180	86%
Christopher Fyock, MD	179	86%
Joseph Beets, MD	161	82%
David Gaines, MD	156	81%
Furkan Ertem, MD	152	80%
Paul Mazanec, MD	146	79%
Ritu Saha, MD	145	79%
Stephen Brackbill, MD	138	77%
Anthony Horton, MD	136	76%
Peter Naas, MD	124	73%
Alexander Kovalic, MD	123	72%
Preston Jones, MD	121	71%
David Gulley, MD	119	71%
Jared Geist, MD	116	70%
Olga Vitorsky, DO	114	69%
Matthew Barnes, MD	110	68%
Joseph Baber, DO	109	67%
Hiren Vallabh, MD	109	67%
Andre Eaddy, MD	107	67%
Ayub Merchant	106	66%
David Palma	104	66%
Madhusudhan Sunkavalli, MD	103	65%
Luis Lizardo Sanchez, MD	98	63%
Anjani Jammula, MD	96	62%
Kimberly Robelin, MD	95	62%
Diego Lim, MD	86	58%
Weston Bettner, MD	77	54%
Graziella Rangel Paniz	76	53%
Christina Bauer, MD	75	52%
Monia Werlang, MD	70	50%
Michael Busch, DO	66	48%
Rehan Khan, MD	57	43%
Kalpit Devani, MD	53	41%
Veeral Oza, MD	41	33%
Juan Corral Hurtado, MD	39	32%
Claude Yarborough, MD	28	25%
Katelyn Madigan	27	24%
Tudor Oroian	26	23%
Abbinaya Elangovan	23	22%
Murat Akyildiz	1-10	13% or below
Linda Redderson, MD	1-10	13% or below
Paul Schmeltzer, 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).