Colonoscopy clinicians in Columbia, South Carolina

CMS lists 45 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 Columbia, South Carolina (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
James Richter, MD	618	99%
Nelson Seabrook, MD	420	99%
Erick Singh, MD	370	98%
Daniel Iseman, MD	285	95%
Siva Chockalingam, MD	255	94%
George Postic	249	93%
Joel Joseph, MD	235	92%
Jorge Galan, DO	223	91%
Spencer Jenkins, MD	206	89%
Edward Kimbrough	194	88%
James Mann, MD	171	85%
Faith Villanueva, MD	168	84%
Walter Bristow, MD	155	81%
George Jenkins, MD	154	81%
Elvin Hardy, MD	130	75%
Kievers Cunningham, MD	121	72%
Jonelle George, DO	119	71%
Barry Donner, MD	115	70%
Saud El-Sayed Suleiman, MD	95	62%
David Sachar, MD	94	62%
Edward Lung, MD	87	59%
Salvatore Moscatello, DO	86	58%
Diego Lim, MD	84	57%
Amit Mori, MD	70	50%
Joseph Meserve, MD	69	49%
Balbir Minhas, MD	69	49%
Mohsen Pourmorteza, MD	56	42%
Zachary Gitto, MD	51	39%
Mohammad Abudalou	50	38%
Rajeev Vasudeva, MD	50	38%
Devendra Enjamuri, MD	46	36%
Kenneth Vega, MD	45	35%
Nicolas Chong Lugon	39	31%
March Seabrook, MD	38	30%
Abdo Saad, MD	28	24%
Russell Ditzler, MD	23	21%
Maimon Hubbi	23	21%
James Altieri, MD	22	20%
Sabyasachi Mohapatra, MD	20	19%
James Henderson, MD	19	18%
Temitope Foster, MD	16	16%
Tudor Oroian	15	16%
Nieka Harris, MD	1-10	13% or below
Anthony Lowman, MD	1-10	13% or below
Rajinder Parmar, 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 (October 2, 2026 release).