Colonoscopy clinicians in Marietta, Georgia

CMS lists 121 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 Marietta, Georgia (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
William Creel, MD	403	98%
Mark Murphy, MD	203	89%
Marc Rosenberg, MD	200	89%
Kelly Grow, MD	195	88%
Muhamad Obideen, MD	181	86%
Mark Stern, MD	180	86%
Nandhakumar Kanagarajan, MD	177	85%
Bradley Shepherd, MD	173	85%
Erik Person, MD	171	85%
Summar Salim, DO	159	82%
Charles Nesmith, MD	150	80%
Jon Trankina, MD	147	79%
Neal Patel, MD	145	79%
Bruce Kalmin, MD	144	78%
Mark Nyce, MD	144	78%
Anna Longacre, MD	136	76%
Girish Anand, MD	133	75%
James Barlow, MD	129	74%
Eric Davis, MD	127	74%
Asra Batool, MD	117	70%
Joyce Peji, MD	117	70%
Steven Carpenter, MD	115	70%
Basil Al-Awabdy, MD	113	69%
Sohail Asfandiyar, MD	112	69%
Jeffrey Kim, MD	111	68%
Yasmin Karim, MD	109	67%
Neal Osborn, MD	109	67%
Jawad Ilyas, MD	108	67%
Marc Sonenshine, MD	108	67%
Aja McCutchen, MD	105	66%
Lori Lucas, MD	101	65%
Justin Mendel, MD	101	65%
Anuj Manocha, MD	98	63%
Ather Bukhari, MD	97	63%
Hetal Karsan, MD	97	63%
Adam Weinberg, MD	95	62%
Priti Pandya, MD	93	61%
Christopher Brown, MD	91	60%
Sachin Goel, MD	91	60%
Judy Oh, MD	90	60%
Joel Camilo, MD	89	59%
Stephanie Lafontaine, MD	89	59%
Girish Pore, MD	89	59%
Brent Acker, MD	88	59%
Karim Gani, MD	88	59%
Muhammad Mansoor, MD	86	58%
Joshua Foromera, MD	85	58%
Mark Edge, MD	84	57%
Gordon Robbins, MD	84	57%
Charles Duckworth, MD	81	55%
Patricia Sanchez Fermin, MD	80	55%
Barry Levitt, MD	79	54%
Madhuri Meka, MD	78	54%
Ahmed Messallam, MD	76	53%
Suku George, MD	74	52%
Daniel Mullady, MD	74	52%
Ritesh Shah, MD	74	52%
Ruth Montalvo, MD	73	51%
Mubashar Munir, MD	73	51%
Srinivasa Ayinala, MD	72	51%
Huiming Hon, MD	71	50%
Michael Frist, MD	69	49%
Ryan Wanamaker, MD	69	49%
Earl Campbell, MD	68	49%
Jyotsna Talapaneni, MD	68	49%
Luis Galvez, MD	66	47%
Leah Katta, MD	66	47%
Raja Sappati Biyyani, MD	66	47%
Ranvir Singh, MD	66	47%
Nicole Gordon, MD	64	46%
Eric High, MD	63	46%
Nina Singh, MD	63	46%
Ashish Zalawadia, MD	63	46%
Anish Desai, MD	61	45%
Sanjay Parikh, MD	61	45%
Keval Patel, MD	61	45%
Bharat Rao, MD	61	45%
Inder Tandon	61	45%
Michael Fry, MD	58	43%
Shanil Harkins	58	43%
Sagar Garud, MD	57	42%
Swaroop Pendyala, MD	57	42%
Donald Pham	57	42%
Subodh Lal, MD	56	42%
Jonathan Kandiah	55	41%
Freaw Dejenie, MD	54	41%
David Finkelman, MD	53	40%
Ramprasad Jegadeesan, MD	53	40%
Umer Malik, MD	52	40%
Ngozi Okoro	50	38%
Jai Eun Min, MD	49	38%
Karen Weiss-Schorr, MD	49	38%
Long Nguyen, DO	47	36%
Elizabeth Craig, DO	45	35%
Anupama Inaganti, MD	44	34%
Douglas Wolf	44	34%
Michael Grupka, MD	43	34%
Akit Patel, MD	42	33%
Michael Castillo, MD	41	32%
Aasim Sheikh, MD	41	32%
Seema Kumar, MD	38	30%
Robert Eisenband	37	30%
Jung Suh, MD	37	30%
Jay Garten, MD	36	29%
Shawn Chaudhary, MD	35	28%
Xiaowen Fan, MD	33	27%
Alexander Pan, MD	32	27%
Edward Rydzak, MD	31	26%
Priya Ravindran, MD	29	25%
Umangi Patel, MD	27	23%
Alberto Fernandez Bravo, MD	25	22%
Kavita Kongara, MD	24	21%
Nitin Parikh, MD	24	21%
George Aragon, MD	20	19%
Kunjal Gandhi, MD	20	19%
Khwaja Haq, MD	18	18%
Neal Patel, MD	18	18%
Margaret Morrison, MD	17	17%
Victoria Earl, MD	15	16%
Sohaib Hassan, MD	12	14%
Tagore Sunkara, 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.

Reported in previous releases

CMS does not report a colonoscopy volume for these clinicians in the October 2, 2026 release. Their pages show figures from earlier releases.

Richard Blalock, MD Last reported August 18, 2026

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).