Colonoscopy clinicians in Birmingham, Alabama

CMS lists 78 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	663	99%
Rohit Malik, MD	437	99%
Miles Gresham, MD	304	96%
Charles Dasher, MD	294	96%
Robert Loudon, MD	291	96%
Brent Barranco, MD	283	95%
Robert Shaffer, MD	269	94%
Wiley Truss, MD	259	94%
Rishi Agarwal, MD	247	93%
Brian McGrath, MD	239	93%
Owen McLean, MD	238	92%
Donny Kakati, MD	227	91%
David Steele, MD	217	90%
Swaroop Vitta, MD	217	90%
Michael Passarella, MD	216	90%
Nathaniel Peyton	214	90%
Christopher Shaver, MD	214	90%
Michael Phillips	204	89%
Joanna Siegel, MD	200	88%
Brian Brunson, MD	195	88%
Charles Dasher, MD	185	86%
James McPhail, MD	185	86%
Charles Welden, MD	185	86%
Molly McVey, MD	179	86%
Rajat Parikh, MD	165	83%
Carrie Rothermel, MD	152	80%
John Herndon, MD	150	80%
William Lopez, MD	148	80%
Anam Hameed	126	73%
Mohammad Khan, MD	123	72%
Kevin Batte, MD	122	72%
Lindsay Robison, MD	122	72%
Tasnia Matin, MD	121	71%
Mohamad Imam, MD	120	71%
William Halama, MD	116	70%
Mohamed Ismail	111	68%
Nikhil Jayaram, MD	110	68%
Derek Estes	107	67%
Gregory Champion, MD	100	64%
Amanda Cartee, MD	91	60%
Shajan Peter, MD	90	60%
Diego Lim, MD	86	58%
Fayez Sarkis, MD	86	58%
Patricia Ajayi-Fox	82	56%
Kirk Russ	79	54%
Deryck Joseph, MD	70	50%
Zaid Alnoah, MD	66	48%
Peter Miller, MD	64	47%
Thaer Abdelfattah, MD	62	46%
Ramzi Mulki, MD	59	44%
Bashar Ftaiha	56	42%
Douglas Dickinson, MD	51	39%
Chad Burski	49	38%
Christopher Truss, MD	48	38%
Nizar Charafeddine, MD	46	36%
Chad Spencer	46	36%
Mohannad Dugum, MD	45	36%
William Oelsner	44	35%
Ali Ahmed	42	34%
Meagan Gray	36	30%
Brendan McGuire, MD	34	29%
Walid Khan, MD	33	28%
Douglas Morgan	30	26%
James Callaway	28	25%
Elizabeth Terry, MD	26	23%
David Fettig, MD	24	22%
Kondal Kyanam Kabir Baig, MD	18	18%
Sujan Ravi, MD	17	17%
John Shallcross, MD	12	14%
Karin Hardiman, MD	11	13%
Mohamed Shoreibah, MD	11	13%
Subhash Bajaj, MD	1-10	13% or below
Vance Blackburn, 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
Nikhil Shah, 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.

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).