Colonoscopy clinicians in Keller, Texas

CMS lists 49 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 Keller, Texas (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Natarajan Bala, MD	236	92%
Ernesto Guerra, MD	230	92%
Joseph Johnson, MD	222	91%
Thomas Dewar, MD	219	91%
Suresh Rajendran, MD	216	90%
Richard Otero, MD	199	89%
Daniel Darmadi, MD	185	87%
Antonio Serna, MD	181	86%
Jyoti Rao, MD	170	84%
Thomas Kepczyk, MD	167	84%
Fayez Seif	162	83%
John Cluley, MD	158	82%
Michel Kafrouni, MD	153	81%
Rafael Amaro, MD	139	77%
Junaid Siddiqui, MD	135	76%
Steven Pearce, MD	130	75%
David Levitan, MD	129	74%
William Deschner, MD	126	73%
Jignesh Shah, MD	126	73%
Gowrappala Ramesh, MD	123	72%
Josh George, MD	118	71%
Carol Mallette, MD	118	71%
Jeffrey Smith, MD	114	69%
Syed Sadiq, MD	109	67%
Arthi Kumaravel, MD	104	66%
Virat Dave, MD	102	65%
Shahid Ali, MD	99	64%
Sumanth Daram, MD	95	62%
Dustin Kiker, MD	90	60%
John Alvarez, MD	87	59%
Kumar Gutta, MD	86	58%
Joseph Shelton, MD	85	58%
Kim Gentry, MD	84	57%
Nandini Nagaraj, MD	81	55%
Amit Goyal, MD	73	51%
Anu Lamba, MD	72	51%
Vinay Antin, DO	69	49%
Jan Prazak, MD	64	46%
Jeffrey Krieger, MD	62	45%
Cristian Dominguez, MD	59	44%
Charles Jaiyeoba, MD	58	43%
Christopher Vesy, MD	56	42%
Carlos Neghme, MD	48	37%
Mohammad Taheri, MD	48	37%
Suwebatu Odunsi Shiyanbade, MD	47	36%
Balu Chandra, MD	46	36%
Kanthi Yalamanchili, MD	44	34%
Christopher Ramos	31	26%
David Bass, 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).