Colonoscopy clinicians in Memphis, Tennessee

CMS lists 37 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 Memphis, Tennessee (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Michael Dragutsky, MD	465	99%
Phillip Bowden, MD	390	98%
Bryan Thompson, MD	303	96%
Terrence Jackson, MD	296	96%
Shoaib Azam, MD	271	95%
Daniel Kayal, DO	264	94%
Joseph Baltz, MD	244	93%
Sri Lakshmi Narra, MD	226	91%
Kenneth Fields, MD	223	91%
Lakshmi Dasaree, MD	211	90%
Paul Bierman, MD	194	88%
Gaurav Kistangari, MD	162	82%
Randelon Smith, MD	159	82%
Sunil Sarvaria, MD	155	81%
Rajesh Ramachandran, MD	139	77%
Ulric Duncan, MD	114	69%
Edward Friedman, MD	96	62%
Wesley Jones, MD	86	58%
Abdullah Al-Rashdan, MD	83	56%
John McKee, MD	75	52%
William Alexander, MD	73	51%
David Nemoto, MD	62	46%
Sara Chalifoux, MD	58	44%
Hadiatou Barry, MD	57	43%
Charles Jaiyeoba, MD	55	42%
Kodwo Orleans Lindsay, MD	47	37%
Marc New, MD	37	31%
Mohammad Ismail, MD	34	29%
Carl Foulks, MD	32	27%
Ashirf Al-Ghanoudi, MD	26	23%
Kimberly Zibert, DO	24	22%
Muhammad Siddiq, MD	20	19%
Mabel Zevallos, MD	20	19%
Leonard Baidoo, MD	19	19%
Satheesh Nair, MD	17	17%
Ricardo McCall, MD	13	15%
Gregory Szych, DO	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).