Colonoscopy clinicians in Providence, Rhode Island

CMS lists 41 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 Providence, Rhode Island (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Joseph Pianka, MD	216	90%
Kevin Palumbo, MD	150	80%
Edward Pensa, MD	117	70%
Philip Trupiano, DO	114	69%
Robert Bierwirth	111	68%
Eric Newton, MD	107	67%
Eric Berthiaume, MD	103	65%
Lisa Mueller, MD	99	64%
Robert Wolfgang, DO	99	64%
Paul Akerman, MD	97	63%
Thomas Sepe, MD	89	59%
Samir Shah, MD	89	59%
Peter Margolis, MD	86	58%
Neil Greenspan, MD	84	57%
Philip McAndrew, MD	84	57%
Sheldon Lidofsky, MD	82	56%
Angela Fishman, MD	79	54%
Jeffrey Nadelson, MD	74	52%
Breton Roussel, MD	71	50%
William Chen, MD	67	48%
Harlan Rich, MD	65	47%
Amer Malik, MD	63	46%
Alyn Adrain, MD	60	45%
Jason Ferreira, MD	58	44%
John Cribb, MD	57	43%
Brett Kalmowitz, MD	56	42%
David Schreiber, MD	54	41%
Pranith Perera, MD	50	39%
Jeremy Spector, MD	39	32%
Sean Fine, MD	38	31%
Tian Gao, MD	38	31%
Li Wang, MD	38	31%
Daniel Greenwald, MD	34	29%
Amanda Pressman, MD	34	29%
Pedro Barros, MD	33	28%
Paige McLean Diaz, MD	27	24%
Valley Dreisbach, MD	25	23%
Lisa Panzini, MD	25	23%
Bryce Perler, MD	17	17%
Kittichai Promrat, MD	1-10	13% or below
Christopher Typhair, 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).