Colonoscopy clinicians in Providence, Rhode Island

CMS lists 44 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	244	93%
Kevin Palumbo, MD	174	85%
Philip Trupiano, DO	126	73%
Robert Bierwirth	111	68%
Edward Pensa, MD	108	67%
Robert Wolfgang, DO	102	65%
Eric Newton, MD	98	63%
Lisa Mueller, MD	97	63%
Eric Berthiaume, MD	96	63%
Paul Akerman, MD	95	62%
Sheldon Lidofsky, MD	95	62%
Philip McAndrew, MD	93	61%
Thomas Sepe, MD	91	60%
Peter Margolis, MD	85	58%
Samir Shah, MD	83	57%
Angela Fishman, MD	82	56%
Breton Roussel, MD	81	55%
John Cribb, MD	79	54%
William Chen, MD	77	53%
Neil Greenspan, MD	74	52%
Jason Ferreira, MD	70	50%
David Schreiber, MD	67	48%
Brett Kalmowitz, MD	63	46%
Jeffrey Nadelson, MD	63	46%
Elizabeth Decker, DO	62	45%
Fadlallah Habr, MD	56	42%
Harlan Rich, MD	53	40%
Pranith Perera, MD	48	37%
Alyn Adrain, MD	45	35%
Sean Fine, MD	45	35%
Jeremy Spector, MD	45	35%
May Min, MD	44	34%
Daniel Greenwald, MD	40	32%
Amanda Pressman, MD	36	29%
Valley Dreisbach, MD	35	28%
Pedro Barros, MD	33	27%
Tian Gao, MD	33	27%
Li Wang, MD	33	27%
Lisa Panzini, MD	25	22%
Paige McLean Diaz, MD	24	21%
Bryce Perler, MD	19	18%
Kittichai Promrat, MD	1-10	13% or below
Christopher Typhair, MD	1-10	13% or below
Rhushi Ziradkar, 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 (October 2, 2026 release).