Colonoscopy clinicians in Raleigh, North Carolina

CMS lists 97 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 Raleigh, North Carolina (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Christopher Schwarz, MD	194	88%
Andrew Lange, MD	183	86%
Karla Nieves Borrero, MD	167	84%
Neeraj Sachdeva, MD	164	83%
Sanjay Jagannath, MD	161	82%
Raja Vadlamudi, MD	149	80%
Indira Reddy, MD	144	79%
Julia Hughes, MD	136	76%
Iris Vance, MD	129	74%
Michael Battaglino, MD	106	66%
Jeremy Glissen Brown, MD	103	65%
Ashish Shah, MD	94	62%
Marc Herschelman, DO	93	61%
Sharif Chowdhury, MD	92	61%
Kenneth Kohagen, MD	89	59%
Justin Crocker, MD	85	57%
Mohammad Esmadi, MD	85	57%
Ami Patel, MD	83	56%
Angela Hira, DO	81	55%
Juan Herrera, MD	79	54%
Daniel Wild, MD	79	54%
Farah Hussain, MD	78	54%
Adeyemi Lawal, MD	78	54%
Tal Hazan, MD	77	54%
Danielle Hoo Fatt, MD	77	54%
Benjamin Lloyd	76	53%
Angela Carollo, MD	75	52%
Jorge Obando, MD	75	52%
Amy Barto, MD	73	51%
Naveen Narahari, MD	73	51%
Benjamin Robey, MD	70	50%
David Tendler, MD	70	50%
Luis Vazquez-Montesino, MD	70	50%
Darin Dufault, MD	68	49%
Rig Patel, MD	67	48%
Colm O'Loughlin, MD	66	48%
Karen Chachu	63	46%
Mohsen Pourmorteza, MD	63	46%
Robin Zachariah, MD	63	46%
Michael Feiler, MD	60	45%
Rebecca Burbridge, MD	59	44%
Ruth Mokeba Ekangaki, MD	59	44%
Melissa Teitelman, MD	58	44%
Boris Cvetkovski, MD	57	43%
Dina Ahmad, MD	56	42%
Hirendra Doshi, MD	55	42%
Bobby Jacob, MD	48	38%
Shannon Scholl, MD	47	37%
Richard Wood, MD	47	37%
Rajendraprasad Makam, MD	46	36%
Omobonike Oloruntoba, MD	46	36%
Nicole Jawitz, MD	45	36%
Michael McKay, MD	45	36%
Sahar Ghassemi, MD	43	34%
Jane Onken, MD	42	34%
Christie Blanton, MD	41	33%
Alpesh Patel, MD	41	33%
Anil Tumbapura, MD	41	33%
Tanvir Haque, MD	40	33%
Murtaza Parekh, MD	39	32%
Nannaya Jampala, MD	38	31%
Annmarie Kieber-Emmons, MD	38	31%
Julius Wilder, MD	38	31%
Anand Dwivedi	36	30%
Alexander Reddy, MD	36	30%
Darshan Kothari, MD	35	29%
Troy Pleasant, MD	35	29%
Carl Foulks, MD	32	27%
John Haydek, MD	32	27%
Sara Ali, MD	31	27%
Dhvani Shah, MD	30	26%
Neil Kheterpal, DO	27	24%
Michael Dougherty, MD	26	23%
Narasimha Gollol Raju, MD	25	23%
Alyson Johnson, MD	25	23%
Carla Brady, MD	24	22%
David Leiman	24	22%
Sarah McGill, MD	24	22%
Katherine Scholand, MD	24	22%
Amreen Dinani, MD	21	20%
Mahfuzul Haque, MD	21	20%
Paul Jowell, MD	21	20%
Matthew Kappus, MD	17	17%
Giselle Mahoro, MD	16	17%
Talisha Ramchal, MD	16	17%
Kimberly Darlington, MD	15	16%
Malcolm Branch, MD	13	15%
Lisa Jones, MD	12	14%
Deepa Reddy, MD	11	13%
Catherine Bartholomew, MD	1-10	13% or below
Athidi Earasi, MD	1-10	13% or below
Christopher McGowan, MD	1-10	13% or below
Alicia Muratore, MD	1-10	13% or below
Brahma Natarajan, MD	1-10	13% or below
Dionne Rebello, MD	1-10	13% or below
Jatin Roper, MD	1-10	13% or below
Maria Segovia, 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).