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Colonoscopy clinicians in Dallas, Texas

CMS lists 244 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 Dallas, Texas (details below).

Colonoscopy volume

Clinician Colonoscopies billed Percentile rank
Tsauyu Lin, MD 345 97%
Stephen Hutto, MD 246 93%
Natarajan Bala, MD 236 92%
Ernesto Guerra, MD 230 92%
Richard Seidel, MD 227 92%
Joseph Johnson, MD 222 91%
Thomas Dewar, MD 219 91%
George Duvall, MD 217 91%
Suresh Rajendran, MD 216 90%
David Jones, DO 214 90%
Richard Otero, MD 199 89%
William Torres, MD 199 89%
Jeff Bullock, MD 198 88%
Daniel Darmadi, MD 185 87%
Olusola Olofinlade, MD 185 87%
Umair Sohail, MD 185 87%
Antonio Serna, MD 181 86%
Feng Li, MD 180 86%
Jyoti Rao, MD 170 84%
Kevin Franklin, MD 167 84%
Rajeev Jain, MD 167 84%
Thomas Kepczyk, MD 167 84%
Shayne Skarda, MD 165 83%
Fayez Seif 162 83%
Perry Lewis, MD 159 82%
John Cluley, MD 158 82%
Kai Xia, MD 152 80%
Angelica Belo, MD 151 80%
Shannon Marek, MD 151 80%
Ali Harb, MD 148 79%
Robert Anderson, MD 140 77%
Thuc Quyen Nguyen, MD 140 77%
Rafael Amaro, MD 139 77%
Harry Ojeas, MD 138 77%
Bilal Khan, MD 136 76%
Junaid Siddiqui, MD 135 76%
Thomas Van Dinter, MD 135 76%
Steven Pearce, MD 130 75%
David Levitan, MD 129 74%
Elizabeth Odstrcil, MD 129 74%
Abrar Ahmed, MD 128 74%
Dean Ehrlich, MD 128 74%
Sami Arslanlar, MD 127 74%
William Deschner, MD 126 73%
Osvaldo Fajardo, MD 126 73%
Viralkumar Patel, MD 126 73%
Jignesh Shah, MD 126 73%
Louie Freeman, MD 124 73%
Eddie Flores, MD 123 72%
Gowrappala Ramesh, MD 123 72%
Donna McMyler, MD 119 71%
Josh George, MD 118 71%
Carol Mallette, MD 118 71%
Armond Schwartz, MD 115 70%
Rassa Shahidzadeh, MD 114 69%
Jeffrey Smith, MD 114 69%
Neville Fernandes, MD 113 69%
Jachi Sun, MD 112 69%
Jessica Garner, DO 109 67%
Syed Sadiq, MD 109 67%
Jermaine Clarke, DO 108 67%
Nabeel Koro, MD 108 67%
Imran Sheikh, MD 107 67%
Arthi Kumaravel, MD 104 66%
Sudhir Alampur, MD 103 65%
Esmail Elwazir, MD 103 65%
Virat Dave, MD 102 65%
Matthew Eidem, MD 102 65%
Michael Nunez, MD 102 65%
Damien Mallat, MD 100 64%
Shahid Ali, MD 99 64%
Gurkarminder Sandhu, MD 99 64%
Kimberly Persley, MD 97 63%
Sumanth Daram, MD 95 62%
Conway Huang, MD 95 62%
Aris Tsiakos, MD 94 62%
Shibu Oommen, MD 93 61%
Ali Akbar, MD 90 60%
Dustin Kiker, MD 90 60%
Xiaotuan Zhao, MD 89 59%
John Alvarez, MD 87 59%
Lisa Alvarez 86 58%
Kumar Gutta, MD 86 58%
Katrina Bassel, MD 85 58%
Ravi Chittajallu, MD 85 58%
Joseph Shelton, MD 85 58%
Kim Gentry, MD 84 57%
Joseph Kim, MD 84 57%
Nandini Nagaraj, MD 81 55%
Melvin Lau, MD 78 54%
Praveen Srungaram, MD 77 53%
Sajneet Khangura, MD 76 53%
Sarita Gayle, MD 75 52%
Joseph Krill, MD 75 52%
Randal Macurak, MD 74 52%
Rajesh Putcha, MD 74 52%
Sindhu Abraham, MD 73 51%
Clyde Collins, MD 73 51%
Amit Goyal, MD 73 51%
Jason Martin, MD 73 51%
Anu Lamba, MD 72 51%
Noel Snowberger, MD 72 51%
Kenneth Brown, MD 71 50%
Angela Carollo, MD 71 50%
Vincent Chan, MD 70 50%
Shehriyar Mehershahi, MD 70 50%
Mark Prince, MD 69 49%
Son Do, MD 68 49%
Vincent Kuo, MD 68 49%
Neha Patel, MD 68 49%
James Hakert, MD 67 48%
Paul Tarnasky, MD 66 47%
Adnan Badr, MD 65 47%
Jan Prazak, MD 64 46%
Jeffrey Krieger, MD 62 45%
Raghujit Singh, MD 61 45%
Savreet Sarkaria, MD 60 44%
Cristian Dominguez, MD 59 44%
Magdalena Espinoza, MD 59 44%
Amy Lo, MD 58 43%
Rozina Mithani-Kukreja, MD 56 42%
Christopher Vesy, MD 56 42%
Sangeethapriya Duraiswamy, MD 55 41%
Ben Kahn, MD 55 41%
Bradley Kapten, MD 54 41%
David Lee, MD 53 40%
Meher Sindhoora Mavuram, MD 53 40%
Andrea Betesh, MD 52 40%
Ioana Smith, MD 52 40%
Greta Szabo, MD 50 38%
Samar Harris, MD 49 38%
Alexander Lee, MD 49 38%
Chinemerem Okwara, MD 48 37%
Sumana Reddy, MD 48 37%
Mohammad Taheri, MD 48 37%
Ahmed Chatila, MD 47 36%
Rathan Reddy, MD 47 36%
Mingjun Song, MD 47 36%
Venessa Beckman, DO 46 36%
Balu Chandra, MD 46 36%
Sravanya Gavini, MD 45 35%
Sowjanya Kanna, MD 45 35%
Farbod Masrour, DO 45 35%
Amisha Ahuja, MD 44 34%
Kevin Garza, MD 44 34%
Hemangi Kale, MD 44 34%
Rushikesh Shah, MD 44 34%
Kanthi Yalamanchili, MD 44 34%
Asha Adams, DO 43 34%
Namisha Thapa, DO 42 33%
Joshua Immergluck, MD 41 32%
Juan Martinez, MD 41 32%
Jianyi Yin, MD 41 32%
Ericka Howard, MD 39 31%
Gerald Isbell, MD 39 31%
Ernesto Llano, MD 39 31%
Jiexin Wang, MD 39 31%
Michael Weisberg, MD 38 30%
Charles Lostak, MD 37 30%
Moheb Boktor, MD 36 29%
Christie Choi, MD 36 29%
Ali Casey Kassem, MD 36 29%
Walter Young, MD 36 29%
Murali Alloju, MD 35 28%
Themistocles Dassopoulos, MD 35 28%
David Fudman, MD 35 28%
Ravi Pavurala, MD 35 28%
Katie Truitt, MD 35 28%
Chenlu Tian, MD 33 27%
Prashant Kedia, MD 32 27%
Rekha Reddy, MD 32 27%
Christopher Ramos 31 26%
Alexander Mantas, MD 29 25%
Hector Nazario, MD 27 23%
Hendrikus Vanderveldt, MD 27 23%
Muhammad Baig, MD 26 23%
Daniel Ellis, MD 26 23%
Azeez Osho, MD 26 23%
Xiaofei Kong, MD 25 22%
Diane Nguyen, MD 24 21%
George Rateb, MD 22 20%
Lafaine Grant, MD 21 20%
Markus Goldschmiedt, MD 20 19%
Dawit Jowhar, MD 19 18%
Tarek Sawas, MD 19 18%
Christian Mayorga, MD 18 18%
Diana Mosquera Aguirre, MD 18 18%
Anh Nguyen, MD 18 18%
Emre Turer, MD 18 18%
Hussien Elsiesy, MD 17 17%
Jay Horton, MD 17 17%
Sumita Mehta, MD 16 16%
Shannan Tujios, MD 16 16%
Vani Konda, MD 15 16%
Marlyn Mayo, MD 15 16%
Josephine Ni, MD 15 16%
Ariel Aday, MD 13 14%
Maddie Kubiliun, MD 13 14%
Chanakyaram Reddy, MD 13 14%
Neema Saraiya, MD 13 14%
Lisa Vanwagner, MD 13 14%
Vibhu Chittajallu, MD 12 14%
Ezra Burstein, MD 11 13%
Srinivas Ramireddy, MD 11 13%
Amin Amin, MD 1-10 13% or below
Mohammad Ashfaq, MD 1-10 13% or below
Sumeet Asrani, MD 1-10 13% or below
Ranjeeta Bahirwani, MD 1-10 13% or below
Maisha Barnes, MD 1-10 13% or below
Indira Bhavsar-Burke, MD 1-10 13% or below
Jeffrey Browning, MD 1-10 13% or below
Lisa Casey, MD 1-10 13% or below
Brooks Cash, MD 1-10 13% or below
Thomas Cotter, MD 1-10 13% or below
Byron Cryer, MD 1-10 13% or below
Steven Dayton, MD 1-10 13% or below
Daniel Demarco, MD 1-10 13% or below
Ashton Ellison, MD 1-10 13% or below
Benjamin Elsbernd, MD 1-10 13% or below
Saleh Elwir, MD 1-10 13% or below
Elisabeth Frei, MD 1-10 13% or below
Manjushree Gautam, MD 1-10 13% or below
Stevan Gonzalez, MD 1-10 13% or below
Connor Griffin, MD 1-10 13% or below
Rodney Infante, MD 1-10 13% or below
Thomas Kerr, MD 1-10 13% or below
Maria Lepe-Suastegui, MD 1-10 13% or below
Sarah Lieber, MD 1-10 13% or below
Jeremy Louissaint, MD 1-10 13% or below
Amar Mahgoub, MD 1-10 13% or below
Parvez Mantry, MD 1-10 13% or below
Ashwini Mehta, DO 1-10 13% or below
Shivang Mehta, MD 1-10 13% or below
Apurva Modi, MD 1-10 13% or below
Suraj Patel, MD 1-10 13% or below
Mark Pedersen, MD 1-10 13% or below
Robert Rahimi, MD 1-10 13% or below
Stuart Spechler, MD 1-10 13% or below
Rashid Syed, MD 1-10 13% or below
Anna Tavakkoli, MD 1-10 13% or below
Thomas Tielleman, MD 1-10 13% or below
Howard Weiner, MD 1-10 13% or below
Jeffrey Weinstein, MD 1-10 13% or below
Jake Wilson, 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.

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).