Colonoscopy clinicians in Rockville, Maryland

CMS lists 65 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 Rockville, Maryland (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Michael Schindler, MD	163	83%
Robert Finkel, MD	160	82%
Charles Obioha, MD	129	74%
Jatinder Sekhon, MD	128	74%
Stephen Humm, MD	126	73%
Kathryn Kirk, MD	126	73%
George Bolen, MD	124	73%
Zaifi Shanavas, MD	116	70%
Ghanshyam Gupta, MD	113	69%
David Jager, MD	112	68%
Ali Husain, MD	107	67%
Babak Sagvand, MD	106	66%
Nelson Chuang, MD	105	66%
Lawrence Bassin, MD	102	65%
Nissrin Ezmerli, MD	102	65%
Matthew Yeatman, MD	101	64%
Neil Julie, MD	100	64%
James Butler, MD	92	61%
Eric Pollack, MD	92	61%
Anna Strongin, MD	92	61%
Olanma Okoji, MD	90	60%
Ruben Acosta, MD	89	59%
Akriti Saxena, MD	88	59%
Soonbok Woo, MD	84	57%
Leigh Bornstein Lurie, MD	83	56%
Julio Salcedo, MD	83	56%
Dawei Yang, MD	82	56%
Jessica Korman, MD	80	55%
Eiman Nabi, MD	78	54%
Natasha Kamal, MD	76	53%
Joseph Genovese, MD	75	52%
Andrew Mowery, DO	75	52%
Maaz Sohail, MD	75	52%
Zachary Borman, MD	73	51%
Jeffrey Kim, MD	73	51%
Shien Hu, MD	72	51%
Annmarie Stephenson Thomas, DO	71	50%
Mark Gloger, MD	68	49%
Karen Chachu	63	46%
Kanthi Rekha Badipatla, MD	61	45%
Stephen Park, MD	61	45%
Roderick Kreisberg, MD	60	45%
Weiming Yan, MD	60	45%
Faisal Bhinder, MD	58	44%
Dominique Howard, MD	54	41%
Jessica Rosenberg, MD	54	41%
Zilla Hussain, MD	51	39%
Ramsey Daher, MD	49	38%
Belen Tesfaye, MD	47	37%
Sneha Patel, MD	46	36%
Eric Margulies, MD	42	34%
Barathi Sivasailam, MD	35	29%
Scott Friedberg, MD	31	27%
Georgia Richards, MD	26	23%
Robert Hardi, MD	25	23%
Sarit Kipnis, MD	20	19%
Jisun Hahn, MD	14	15%
Angela Bien, MD	12	14%
Nalini Sharma, MD	12	14%
Folabomi Ajanaku, MD	1-10	13% or below
Toufic Kabbani, MD	1-10	13% or below
Jesse Liu, MD	1-10	13% or below
Ibironke Oduyebo, MD	1-10	13% or below
Melik Tiba, MD	1-10	13% or below
Dawn Torres, 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).