SurgeryVolume Find a doctor

Colonoscopy clinicians in Durham, North Carolina

CMS lists 63 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 Durham, North Carolina (details below).

Colonoscopy volume

Clinician Colonoscopies billed Percentile rank
Neeraj Sachdeva, MD 155 81%
Iris Vance, MD 119 71%
Teodoro Toledo, MD 94 62%
Justin Crocker, MD 84 57%
Jorge Obando, MD 82 56%
Jeremy Glissen Brown, MD 79 54%
Ami Patel, MD 79 54%
Amy Barto, MD 78 54%
Darin Dufault, MD 74 52%
Matthew Rein, MD 73 51%
Daniel Wild, MD 68 49%
Benjamin Lloyd 67 48%
Cameron Locklear, MD 66 47%
Lauren Pioppo Phelan, MD 66 47%
Michael Feiler, MD 63 46%
David Tendler, MD 60 44%
Joshua Lee, MD 59 44%
Steven Russo, DO 59 44%
Bryan Badal, MD 58 43%
Karen Chachu 58 43%
Scott Manski, MD 58 43%
Angela Hutzenbuhler, MD 57 42%
Robin Zachariah, MD 57 42%
Laura Bach, DO 56 42%
Rebecca Burbridge, MD 55 41%
Melissa Teitelman, MD 54 41%
Nicole Jawitz, MD 53 40%
Jane Onken, MD 51 39%
Richard Wood, MD 50 38%
Paul Cassis, MD 49 38%
Joshua Spaete 48 37%
Natalie Wong, MD 48 37%
Annmarie Kieber-Emmons, MD 47 36%
Darshan Kothari, MD 47 36%
Sabrina Layne, MD 46 36%
Sahar Ghassemi, MD 44 34%
Omobonike Oloruntoba, MD 40 32%
Rohini Vanga, MD 40 32%
Stephanie Garbarino, MD 39 31%
Angela Hira, DO 38 30%
Jinyu Zhang, MD 38 30%
Amreen Dinani, MD 30 25%
Jennifer Dziwis, MD 29 25%
Julius Wilder, MD 27 23%
Alyson Johnson, MD 26 23%
Melanie Cabezas, MD 25 22%
Mahfuzul Haque, MD 25 22%
Carla Brady, MD 23 21%
David Leiman 23 21%
Talisha Ramchal, MD 18 18%
Kara Wegermann, MD 18 18%
Paul Jowell, MD 17 17%
Matthew Kappus, MD 17 17%
Hayley Rogers 16 16%
William Clarke, MD 13 14%
Nancy Yang, MD 13 14%
Malcolm Branch, MD 12 14%
Jatin Roper, MD 12 14%
Katherine Allen, MD 1-10 13% or below
Beth Floyd, MD 1-10 13% or below
Katherine Garman, MD 1-10 13% or below
John Geneczko, MD 1-10 13% or below
Jacqueline Henson, 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).