Colonoscopy clinicians in Columbus, Ohio

CMS lists 100 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 Columbus, Ohio (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Michael Tzagournis, MD	138	77%
John Tzagournis, MD	137	77%
Ravindra Malhotra	132	75%
Jon Walker, MD	126	73%
John Scherer, MD	124	73%
Gregory Meis, DO	121	72%
Julie Holinga, MD	116	70%
Jennifer Jeng, DO	115	70%
Gordon Kim, DO	108	67%
Andrew Go, MD	106	66%
John Castor, MD	104	66%
Srinivas Guptha Gunturu, MD	100	64%
Adam Tzagournis, MD	98	63%
Tasos Manokas, MD	96	63%
Scott Arlin, MD	93	61%
Tara Menon, MD	93	61%
Mihir Bakhru, MD	89	59%
Brett Sleesman, DO	89	59%
Poornima Oruganti	87	59%
Priya Roy, MD	86	58%
Thomas Kramer, MD	85	58%
Prachi Biyani, MD	84	57%
Rohit Makkar, MD	84	57%
Zachary Pattison, DO	84	57%
John Ward, MD	84	57%
Marty Meyer, MD	83	57%
David Sabol, MD	83	57%
Seth Hoffman, MD	82	56%
Brian Dinh, MD	80	55%
Raghuram Reddy, MD	80	55%
Brian Isler, MD	77	53%
Madalina Butnariu, MD	76	53%
Melinda Rogers, MD	76	53%
Shail Govani, MD	75	52%
Sean McCarthy, MD	74	52%
Kiran Bidari, MD	73	51%
Kasey Parker, MD	73	51%
Brett Sklaw, MD	73	51%
Alok Tripathi	72	51%
Matthew Harbrecht, MD	71	50%
Leena Tarigopula, MD	71	50%
Brian Turner, MD	71	50%
Anoop Prabhu, MD	69	49%
Andrea Johnson, MD	68	49%
Aditya Kalakonda, MD	66	47%
Ahmad Anaizi, MD	64	46%
Ryan Gaible, MD	64	46%
Scott Young, MD	63	46%
Antoinette Pusateri, MD	62	45%
Tricia Hengehold	61	45%
Waqas Nawaz, MD	61	45%
Adil Faqih	58	43%
Patrick Chen, DO	56	42%
Laura Golian, MD	55	41%
Sumit Kapoor	54	41%
Zheng Che, MD	53	40%
David Lo, MD	53	40%
Mohammad Shakhatreh, MD	53	40%
Pranav Penninti, DO	50	38%
Mitchell Ramsey, MD	48	37%
Ruchi Bhatia, MD	47	36%
Ryan Fawley, MD	47	36%
Na Li, MD	47	36%
Adeeti Chiplunker, MD	42	33%
Erica Park, MD	41	32%
Jeffrey Wenzke, MD	41	32%
Kenneth Allen, DO	40	32%
Abirami Thiyagarajan, MD	40	32%
Steve Serrao, MD	36	29%
Ana Petrova, MD	33	27%
Peter Stanich, MD	32	27%
Osama Alaradi, MD	31	26%
Alexander Hooper, MD	31	26%
Chineze Akusoba, MD	28	24%
Alexandra Bery, MD	28	24%
Subhankar Chakraborty	28	24%
Jason Eng, MD	28	24%
Sanchit Gupta, MD	28	24%
Raj Shah, MD	28	24%
Krishdeep Chadha, MD	27	23%
Zachary Devore, MD	27	23%
Khalid Mumtaz, MD	26	23%
Hamza Shah, DO	26	23%
Bruce Hennessy, MD	25	22%
Jordan Burlen, MD	24	21%
Vivek Mendiratta, MD	24	21%
Eric Swei, MD	24	21%
Anjana Samadder, MD	22	20%
Thangam Venkatesan, MD	22	20%
Megan Chan, MD	21	20%
Edward Levine, MD	20	19%
Erin Bouquet, MD	17	17%
Sheryl Pfeil, MD	17	17%
Sean Kelly, MD	15	16%
Anthony Michaels, MD	11	13%
Miryam Burelli, MD	1-10	13% or below
Adam Hanje, MD	1-10	13% or below
Philip Hart, MD	1-10	13% or below
Paul Kalogerou, MD	1-10	13% or below
Lindsay Sobotka, 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 (October 2, 2026 release).