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Colonoscopy clinicians in Birmingham, Alabama

CMS lists 80 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 Birmingham, Alabama (details below).

Colonoscopy volume

Clinician Colonoscopies billed Percentile rank
George McWhorter, MD 653 99%
Rohit Malik, MD 398 98%
Robert Loudon, MD 302 96%
Miles Gresham, MD 297 96%
Wiley Truss, MD 277 95%
Brent Barranco, MD 273 95%
Charles Dasher, MD 263 94%
Robert Marks, MD 262 94%
Robert Shaffer, MD 257 94%
Rishi Agarwal, MD 243 93%
Owen McLean, MD 228 92%
Nathaniel Peyton 225 91%
Brian McGrath, MD 219 91%
James McPhail, MD 206 89%
David Steele, MD 199 89%
Brian Brunson, MD 198 88%
Charles Welden, MD 198 88%
Donny Kakati, MD 194 88%
Michael Passarella, MD 193 88%
Swaroop Vitta, MD 192 88%
William Lopez, MD 191 87%
Christopher Shaver, MD 188 87%
Joanna Siegel, MD 181 86%
Molly McVey, MD 178 86%
Bradley Rubery, MD 176 85%
Michael Phillips 166 84%
John Herndon, MD 153 81%
Rajat Parikh, MD 148 79%
Carrie Rothermel, MD 144 78%
Charles Dasher, MD 140 77%
Anam Hameed 132 75%
Lindsay Robison, MD 123 72%
Derek Estes 117 70%
Mohammad Khan, MD 117 70%
Kevin Batte, MD 115 70%
Mohamed Ismail 115 70%
Mohamad Imam, MD 110 68%
Nikhil Jayaram, MD 110 68%
William Halama, MD 103 65%
Tasnia Matin, MD 92 61%
Fayez Sarkis, MD 86 58%
Patricia Ajayi-Fox 85 58%
Diego Lim, MD 84 57%
Zaid Alnoah, MD 79 54%
Kirk Russ 78 54%
William Oelsner 72 51%
Amanda Cartee, MD 66 47%
Thaer Abdelfattah, MD 62 45%
Shajan Peter, MD 62 45%
Chad Spencer 58 43%
Bashar Ftaiha 57 42%
Peter Miller, MD 52 40%
Nizar Charafeddine, MD 50 38%
Ramzi Mulki, MD 49 38%
Ali Ahmed 47 36%
Brendan McGuire, MD 46 36%
Walid Khan, MD 43 34%
Chad Burski 42 33%
Gregory Champion, MD 40 32%
Mohannad Dugum, MD 40 32%
Deryck Joseph, MD 38 30%
Douglas Dickinson, MD 37 30%
Meagan Gray 33 27%
Douglas Morgan 32 27%
David Fettig, MD 30 25%
Elizabeth Terry, MD 29 25%
Christopher Truss, MD 29 25%
James Callaway 25 22%
Kondal Kyanam Kabir Baig, MD 17 17%
Sujan Ravi, MD 17 17%
Karin Hardiman, MD 15 16%
John Shallcross, MD 15 16%
Subhash Bajaj, MD 1-10 13% or below
Andrea Cherrington, MD 1-10 13% or below
Raegan Durant, MD 1-10 13% or below
Sarah Kane, DO 1-10 13% or below
Andrew Posey, DO 1-10 13% or below
Nikhil Shah, MD 1-10 13% or below
Mohamed Shoreibah, MD 1-10 13% or below
Rebekah Weil, 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.

Reported in previous releases

CMS does not report a colonoscopy volume for these clinicians in the October 2, 2026 release. Their pages show figures from earlier releases.

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).