Colonoscopy clinicians in Columbia, South Carolina

CMS lists 38 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
Daniel Iseman, MD	314	96%
Siva Chockalingam, MD	273	95%
Spencer Jenkins, MD	234	92%
George Postic	231	92%
Walter Bristow, MD	219	91%
Edward Kimbrough	197	88%
Jorge Galan, DO	190	87%
George Jenkins, MD	172	84%
James Mann, MD	158	82%
Faith Villanueva, MD	151	80%
Elvin Hardy, MD	140	77%
Barry Donner, MD	133	75%
Kievers Cunningham, MD	113	69%
Saud El-Sayed Suleiman, MD	108	67%
Jonelle George, DO	105	66%
David Sachar, MD	97	63%
Edward Lung, MD	95	62%
Diego Lim, MD	86	58%
Salvatore Moscatello, DO	77	54%
Balbir Minhas, MD	76	53%
Joseph Meserve, MD	72	51%
Amit Mori, MD	68	49%
Mohsen Pourmorteza, MD	63	46%
Devendra Enjamuri, MD	62	46%
Kenneth Vega, MD	60	45%
Zachary Gitto, MD	49	38%
Mohammad Abudalou	38	31%
Nicolas Chong Lugon	33	28%
Sabyasachi Mohapatra, MD	33	28%
Maimon Hubbi	26	23%
James Altieri, MD	25	23%
Temitope Foster, MD	22	21%
Russell Ditzler, MD	21	20%
Abdo Saad, MD	18	18%
James Henderson, MD	13	15%
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 (August 18, 2026 release).