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Colonoscopy clinicians in Los Angeles, California

CMS lists 154 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 Los Angeles, California (details below).

Colonoscopy volume

Clinician Colonoscopies billed Percentile rank
Myung Gi Choi, MD 1,015 99%
Benjamin Basseri, MD 561 99%
Ho Bae, MD 433 99%
Pedram Enayati, MD 428 99%
Payman Khorrami, MD 363 98%
Omid Shaye, MD 356 97%
Ariel Malamud, MD 299 96%
Mehrdad Vosoghi, MD 296 96%
Jeffrey Sherman, MD 285 95%
Dae Rheem 246 93%
Marc Makhani, MD 238 93%
Cameron Sikavi, MD 217 91%
James Buxbaum, MD 197 88%
Tien-Chun Chen, MD 195 88%
Hamed Nayeb-Hashemi, MD 181 86%
Nicholas Karyotakis, MD 165 83%
William Katkov, MD 164 83%
Mitchell Spirt, MD 155 81%
Ken Nguyen, MD 151 80%
Rudolph Bedford, MD 134 76%
Danny Issa, MD 127 74%
Jonathan Pourmorady, MD 127 74%
Alireza Sedarat, MD 126 73%
Michael Kim, MD 125 73%
Ara Sahakian, MD 121 72%
Alireza Tabesh, MD 119 71%
Carey Strom, MD 117 70%
Kevin Ghassemi, MD 110 68%
Pilsoo Oh, MD 109 67%
Andrew Chang, MD 108 67%
Benjamin Nulsen, MD 108 67%
Brent Hiramoto, MD 104 66%
Adebambo Ojuri, MD 98 63%
Sohrab Yamini, MD 98 63%
Tarek Hassanein, MD 96 63%
Joel Feinstein, MD 95 62%
Siamak Tabib, MD 93 61%
Mark Ovsiowitz, MD 91 60%
Cynthia Cherfane, MD 89 59%
Kareem Sassi, MD 89 59%
Kevork Khadarian, MD 82 56%
Devin Patel, MD 80 55%
Sarah Sheibani, MD 79 54%
Venkataraman Muthusamy, MD 77 53%
Morris Silver, MD 75 52%
Bing Zhang, MD 75 52%
Marc Kaneshiro, MD 74 52%
Wei-Fang Ko, MD 74 52%
Thomas Wang, MD 74 52%
Arash Zarimani, MD 73 51%
Jeffrey Singerman, MD 70 50%
Neel Mann, MD 69 49%
Florence Damilola Odufalu, MD 67 48%
Stephen Kim, MD 66 47%
Satya Allaparthi, MD 64 46%
Danse Bi, MD 64 46%
Timothy Yen, MD 64 46%
Andrew Kim, MD 61 45%
Andres Yarur, MD 61 45%
Cyril Anyadike, MD 60 44%
Adarsh Thaker, MD 60 44%
Edward Share, MD 59 44%
Terri Getzug 58 43%
Shahrad Hakimian, MD 58 43%
Alexander Kim, DO 58 43%
Priyam Tripathi, MD 58 43%
Rahul Dixit, MD 55 41%
Jing Zhou Wang, MD 55 41%
Robert Fan, MD 54 41%
Maurice Elihu, MD 53 40%
Mary Farid, DO 53 40%
Katherine Hahn, MD 53 40%
Nipaporn Pichetshote, MD 53 40%
Daniel Brelian, MD 52 40%
Mordecai Solomon, DO 52 40%
Guy Weiss, MD 51 39%
Derek Cheng, MD 50 38%
Robert Tamai, MD 50 38%
Ellie Chen, MD 49 38%
Wendy Ho, MD 49 38%
Xin Zheng, DO 49 38%
Jenny Sauk, MD 47 36%
F Otis Stephen, MD 47 36%
Alex Chai, MD 44 34%
Paul Leitner, MD 43 34%
Jennifer Kolb, MD 41 32%
Anthony Myint, MD 35 28%
Uzoamaka Dike, MD 32 27%
Chung-Jyi Tsai, MD 30 25%
Yong Lee, MD 28 24%
Dorian Mendoza, MD 26 23%
Anisa Shaker, MD 26 23%
Raymond Moallemi, MD 23 21%
Gaurav Syal, MD 22 20%
Brian Kim, MD 20 19%
Michael Pimienta, MD 20 19%
Dennis Jensen, MD 19 18%
Mina Rakoski, MD 19 18%
Liyun Yuan, MD 18 18%
Amanda Krause, MD 17 17%
Berkeley Limketkai, MD 17 17%
Hyosun Han, MD 16 16%
Lily Dara, MD 15 16%
Michael Lin, MD 13 14%
Hartley Cohen, MD 12 14%
Amir Ghaffari, MD 12 14%
Michael Albertson, MD 1-10 13% or below
Walid Ayoub, MD 1-10 13% or below
Firas Bahdi, MD 1-10 13% or below
Saroja Bangaru, MD 1-10 13% or below
Michael Block, MD 1-10 13% or below
Nirupama Bonthala, MD 1-10 13% or below
Yin Chan, MD 1-10 13% or below
Jonathan Chang, MD 1-10 13% or below
Kisuk Cho, MD 1-10 13% or below
Gina Choi, MD 1-10 13% or below
Jennifer Choi, MD 1-10 13% or below
Laurie Deleve, MD 1-10 13% or below
Elizabeth Dong, MD 1-10 13% or below
Nasir Halim, MD 1-10 13% or below
Hassan Hamandi, MD 1-10 13% or below
John Iskander, MD 1-10 13% or below
James Jung, MD 1-10 13% or below
Ani Kardashian, MD 1-10 13% or below
Aung Kaung, MD 1-10 13% or below
Saro Khemichian, MD 1-10 13% or below
David Kim, MD 1-10 13% or below
Doeyoung Kim, MD 1-10 13% or below
Hyunseok Kim, MD 1-10 13% or below
Sharon Kim, MD 1-10 13% or below
Karl Kwok, MD 1-10 13% or below
Pei Lim Lee, MD 1-10 13% or below
Xue Jing Li, MD 1-10 13% or below
Martha Meza, MD 1-10 13% or below
Vijayamalini Pampati, DO 1-10 13% or below
Jason Pan, MD 1-10 13% or below
Vijay Pandyarajan, MD 1-10 13% or below
Guadalupe Pedrano, MD 1-10 13% or below
Taaj Raasikh, MD 1-10 13% or below
Shadan Safvati, MD 1-10 13% or below
Takeshi Saito, MD 1-10 13% or below
Arnold Savage 1-10 13% or below
Harprett Sekhon, MD 1-10 13% or below
Manav Sewak Sharma, MD 1-10 13% or below
Akshay Shetty, MD 1-10 13% or below
Jasleen Singh, MD 1-10 13% or below
Blair Smart, MD 1-10 13% or below
Robert Venick, MD 1-10 13% or below
Bechien Wu, MD 1-10 13% or below
Mingming Xu, MD 1-10 13% or below
Timothy Yoo, MD 1-10 13% or below
Christine Yu, MD 1-10 13% or below
Kali Zhou, MD 1-10 13% or below
Thomas Zikos, 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).