Colonoscopy clinicians in La Jolla, California

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 La Jolla, California (details below).

Colonoscopy volume

Clinician	Colonoscopies billed	Percentile rank
Robert Goldklang, MD	415	98%
Sajiv Chandradas, MD	277	95%
Edward Paredez, MD	266	95%
Wilson Kwong, MD	243	93%
Andrew Mayer, MD	197	88%
Karen Simon, MD	189	87%
Walter Coyle, MD	183	87%
John Chang	179	86%
Syed Fehmi, MD	179	86%
Matthew Skinner, MD	163	83%
Behnam Moein Jahromi, MD	152	80%
John Kasher, MD	139	77%
John Kuldau, MD	138	77%
Waleed Shindy, MD	131	75%
Gordon Kim, MD	127	74%
Sushrut Sujan Thiruvengadam, MD	115	70%
Douglas Hunt, MD	113	69%
Derek Patel, MD	106	66%
Franklin Tsai, MD	102	65%
Frank Mayer, MD	92	61%
Ahmad Mansour, MD	91	60%
Ali Fakhreddine, MD	85	58%
Mark Kowalczyk, MD	84	57%
Faizi Hai, MD	80	55%
Fouad Moawad, MD	79	54%
John Zeroogian, MD	79	54%
Nedret Copur, MD	71	50%
Gauree Konijeti, MD	63	46%
Preetika Sinh, MD	62	45%
Gobind Anand, MD	56	42%
Lisa Hertz, MD	46	36%
Han Zhang, MD	46	36%
Jill Lane, MD	37	30%
Joy-Marie Hermes, MD	31	26%
Mohammad Phillip Fejleh, MD	30	25%
Paul Pockros, MD	30	25%
Quan Nhu, MD	26	23%
Raymond Lee, MD	22	20%
Joseph Cheatham, MD	16	16%
Selena Kuo, MD	15	16%
Andres Gottfried Blackmore, MD	1-10	13% or below
Julio Gutierrez, MD	1-10	13% or below
Ravinder Mittal, MD	1-10	13% or below
Irine Vodkin, 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).