Colonoscopy clinicians in Columbus, Ohio

CMS lists 99 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	165	83%
John Tzagournis, MD	141	78%
Ravindra Malhotra	139	77%
Srinivas Guptha Gunturu, MD	136	76%
John Scherer, MD	128	74%
Jon Walker, MD	122	72%
Gordon Kim, DO	116	70%
Tasos Manokas, MD	112	68%
John Castor, MD	105	66%
Adam Tzagournis, MD	104	66%
Gregory Meis, DO	101	64%
Julie Holinga, MD	99	64%
Scott Arlin, MD	98	63%
Rohit Makkar, MD	98	63%
Andrew Go, MD	97	63%
Thomas Kramer, MD	97	63%
Poornima Oruganti	96	62%
Jennifer Jeng, DO	95	62%
Brian Isler, MD	88	59%
Zachary Pattison, DO	87	58%
Marty Meyer, MD	86	58%
Priya Roy, MD	86	58%
Mihir Bakhru, MD	85	57%
Matthew Harbrecht, MD	83	56%
Brett Sleesman, DO	82	56%
Alok Tripathi	82	56%
Prachi Biyani, MD	81	55%
John Ward, MD	81	55%
Patrick Chen, DO	80	55%
Sean McCarthy, MD	80	55%
Seth Hoffman, MD	79	54%
Shail Govani, MD	78	54%
Melinda Rogers, MD	78	54%
David Sabol, MD	77	54%
Aditya Kalakonda, MD	76	53%
Raghuram Reddy, MD	76	53%
Raj Shah	76	53%
Leena Tarigopula, MD	75	52%
Kiran Bidari, MD	73	51%
Madalina Butnariu, MD	73	51%
Tara Menon, MD	72	51%
Brian Turner, MD	70	50%
Ryan Gaible, MD	69	49%
Brett Sklaw, MD	69	49%
Sumit Kapoor	68	49%
Andrea Johnson, MD	67	48%
Ahmad Anaizi, MD	64	47%
Brian Dinh, MD	64	47%
Laura Golian, MD	64	47%
Kasey Parker, MD	63	46%
Anoop Prabhu, MD	62	46%
Antoinette Pusateri, MD	62	46%
David Lo, MD	55	42%
Adil Faqih	54	41%
Scott Young, MD	52	40%
Pranav Penninti, DO	50	39%
Waqas Nawaz, MD	48	38%
Adeeti Chiplunker, MD	47	37%
Kenneth Allen, DO	46	36%
Na Li, MD	45	36%
Mohammad Shakhatreh, MD	44	35%
Ruchi Bhatia, MD	42	34%
Steve Serrao, MD	42	34%
Mitchell Ramsey, MD	41	33%
Tricia Hengehold	40	33%
Erica Park, MD	40	33%
Sanchit Gupta, MD	39	32%
Ana Petrova, MD	37	31%
Jeffrey Wenzke, MD	36	30%
Ryan Fawley, MD	35	29%
Zheng Che, MD	32	27%
Zachary Devore, MD	31	27%
Khalid Mumtaz, MD	31	27%
Abirami Thiyagarajan, MD	31	27%
Bruce Hennessy, MD	30	26%
Vivek Mendiratta, MD	28	25%
Peter Stanich, MD	28	25%
Jordan Burlen, MD	26	23%
Osama Alaradi, MD	25	23%
Edward Levine, MD	25	23%
Raj Shah, MD	25	23%
Krishdeep Chadha, MD	24	22%
Subhankar Chakraborty	23	22%
Eric Swei, MD	23	22%
Thangam Venkatesan, MD	23	22%
Jason Eng, MD	22	21%
Anjana Samadder, MD	22	21%
Hamza Shah, DO	21	20%
Erin Bouquet, MD	18	18%
Sheryl Pfeil, MD	17	17%
Megan Chan, MD	15	16%
Chineze Akusoba, MD	13	15%
Adam Hanje, MD	13	15%
Alexandra Bery, MD	12	14%
Sean Kelly, MD	12	14%
Miryam Burelli, MD	1-10	13% or below
Philip Hart, MD	1-10	13% or below
Paul Kalogerou, MD	1-10	13% or below
Anthony Michaels, 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).