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
Ernesto Guerra, MD	245	93%
Joseph Johnson, MD	230	92%
Thomas Dewar, MD	224	91%
Natarajan Bala, MD	206	89%
Suresh Rajendran, MD	206	89%
Richard Otero, MD	197	88%
Michel Kafrouni, MD	190	87%
Antonio Serna, MD	185	86%
Daniel Darmadi, MD	174	85%
Jyoti Rao, MD	166	83%
Thomas Kepczyk, MD	159	82%
Fayez Seif	159	82%
John Cluley, MD	144	79%
Rafael Amaro, MD	143	78%
David Levitan, MD	130	74%
Junaid Siddiqui, MD	129	74%
Steven Pearce, MD	128	74%
William Deschner, MD	127	73%
Jignesh Shah, MD	127	73%
Gowrappala Ramesh, MD	123	72%
Syed Sadiq, MD	121	71%
Shahid Ali, MD	117	70%
Virat Dave, MD	117	70%
Carol Mallette, MD	114	69%
Arthi Kumaravel, MD	110	68%
Sumanth Daram, MD	109	67%
Josh George, MD	105	66%
Dustin Kiker, MD	104	66%
Kim Gentry, MD	101	64%
Jeffrey Smith, MD	101	64%
Joseph Shelton, MD	91	60%
Kumar Gutta, MD	83	56%
Kenneth Yang, MD	83	56%
Jan Prazak, MD	80	55%
Amit Goyal, MD	79	54%
John Alvarez, MD	78	54%
Nandini Nagaraj, MD	77	54%
Carlos Neghme, MD	75	52%
Christopher Vesy, MD	71	50%
Vinay Antin, DO	70	50%
Anu Lamba, MD	68	49%
Suwebatu Odunsi Shiyanbade, MD	56	42%
Balu Chandra, MD	55	42%
Charles Jaiyeoba, MD	55	42%
Jeffrey Krieger, MD	51	39%
Mohammad Taheri, MD	46	36%
Kanthi Yalamanchili, MD	44	35%
Christopher Ramos	34	29%
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 (August 18, 2026 release).