Colonoscopy clinicians in Bethlehem, Pennsylvania

CMS lists 36 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 Bethlehem, Pennsylvania (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Chatargy Kaza, MD	238	92%
Michael Cassidy, MD	208	89%
Stephen Strohleim, MD	208	89%
Robert Malcolm, MD	207	89%
Keith Kearney, DO	195	88%
Sinan Kutty, MD	194	88%
Nathan Davis, DO	188	87%
Inki Hong, MD	169	84%
Brian Kim, DO	154	81%
Hussam Tayel, MD	153	81%
Christopher Hibbard, DO	148	80%
Ira Kelberman, MD	142	78%
Grace Shin, MD	138	77%
William Otoole, MD	108	67%
Michael Engels, MD	105	66%
Ayaz Matin, MD	105	66%
Tomasz Niewiarowski, MD	100	64%
Vaishali Patel, MD	95	62%
Anastasia Shnitser, MD	88	59%
Mazen Tolaymat, MD	79	54%
Hammad Liaquat, MD	78	54%
Berhanu Geme, MD	77	54%
Kimberly Chaput, DO	71	50%
Pooja Patel, DO	61	45%
Bo Hyung Yoon, MD	43	34%
Anthony Auteri, MD	42	34%
Shahid Malik, MD	40	33%
Cristina Angelo, MD	35	29%
Zheng Lin, MD	28	25%
Maureen Linganna, MD	21	20%
Ashley Tran, MD	19	19%
Renata Lerer, MD	12	14%
James Boylan, MD	1-10	13% or below
Emilie Soyeon Kim, MD	1-10	13% or below
Ragarupa Kotala, MD	1-10	13% or below
Het Patel, DO	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).