Colonoscopy clinicians in Allentown, Pennsylvania

CMS lists 40 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 Allentown, Pennsylvania (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Amrit Narula, MD	371	98%
Chatargy Kaza, MD	238	92%
Brian Kim, DO	154	81%
Aaron Mendelson, MD	150	80%
Travis Magdaleno, DO	113	69%
Paola Blanco, MD	108	67%
Michael Engels, MD	105	66%
Ayaz Matin, MD	105	66%
Shashin Shah, MD	102	65%
Eric Nellis, MD	101	64%
Sean Lacey, MD	100	64%
Tanveer Imam, MD	97	63%
Allison Baragona, MD	96	62%
Vaishali Patel, MD	95	62%
Ronald Bross, MD	93	61%
Jacob Pickle, MD	88	59%
Anastasia Shnitser, MD	88	59%
Amy Javia, MD	84	57%
Jonathan Ohm, MD	82	56%
Hiral Shah, MD	82	56%
Patrick Hickey, DO	80	55%
Matthew Sullivan, DO	79	54%
Mazen Tolaymat, MD	79	54%
Berhanu Geme, MD	77	54%
Kimberly Chaput, DO	71	50%
Bonnie Patek, DO	66	48%
Zachary Zator, MD	66	48%
Adam Peyton, DO	49	38%
Bo Hyung Yoon, MD	43	34%
Anthony Auteri, MD	42	34%
Shahid Malik, MD	40	33%
Cristina Angelo, MD	35	29%
She-Yan Wong, MD	35	29%
Maarouf Hoteit, MD	28	25%
Zheng Lin, MD	28	25%
Jonathan Nahas, MD	28	25%
Maureen Linganna, MD	21	20%
Ethan Weinberg, MD	18	18%
Glenn Freed, DO	1-10	13% or below
Ragarupa Kotala, 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).