Colonoscopy clinicians in Milwaukee, Wisconsin

CMS lists 60 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 Milwaukee, Wisconsin (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Aaron Baltz, MD	491	99%
Maqsood Khan, MD	168	84%
Aboud Affi, MD	167	84%
John Bosco, MD	166	83%
Brian Moloney, MD	161	82%
Steven Lipscomb, MD	143	78%
William Blosky, MD	142	78%
Erica Samuel	138	77%
Nalini Guda, MD	132	75%
Nathaniel Jest, DO	126	73%
Hassaan Zia, MD	124	73%
Chetan Mittal, MD	121	71%
Rajesh Sharma, MD	119	71%
Tarun Sharma, MD	117	70%
Nilay Kumar, MD	113	69%
Alex Ulitsky, MD	112	68%
Harjot Sidhu, MD	106	66%
Jimmy Kim, MD	105	66%
Vasanth Siddalingaiah, MD	97	63%
Sunil Kapur, MD	96	62%
Tarun Kaura, MD	96	62%
Eugene Kligman, MD	96	62%
Jamal Qureshi, MD	95	62%
Ricardo Li, MD	91	60%
Chad Stepke, MD	88	59%
Daniel Stein, MD	84	57%
Syed Hussain, MD	82	56%
Sotirios Vasilopoulos, MD	81	55%
Yuchen Wang, MD	77	54%
Dilpesh Agrawal, MD	76	53%
Benson Massey, MD	63	46%
Julia Leo, MD	60	45%
Syed Rizvi, MD	60	45%
Asad Jehangir	59	44%
Gokulakrishnan Balasubramanian, MD	54	41%
Kia Saeian, MD	54	41%
Patrick Sanvanson, MD	52	40%
Emilie Regner, MD	51	39%
Ling Mei, MD	50	39%
Maurice Chung, MD	47	37%
Phillip Chisholm, MD	41	33%
Francis Edeani, MD	40	33%
Srivats Madhavan, MD	38	31%
Achuthan Sourianarayanane, MD	38	31%
Poonam Beniwal-Patel, MD	37	31%
Abdullah Fayyad, MD	37	31%
W Sobin, MD	36	30%
Mitchell Manthey, MD	34	29%
Hanna Bayisa	31	27%
Matthew Peller, MD	29	25%
Sahibzada Latif, MD	25	23%
Thomas Puetz, MD	23	22%
Abubaker Abdalla, MD	22	21%
Jason Browne, MD	22	21%
Kulwinder Dua, MD	20	19%
Zachary Smith, DO	15	16%
Rituparna Medda, DO	13	15%
Jose Franco, MD	1-10	13% or below
Hussam Sabbagh, MD	1-10	13% or below
Reza Shaker, 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).