Medical Specialty Listing

Colon & Rectal Surgery Specialists in Los Angeles, CA

Browse 20 Colon & Rectal Surgery providers listed in NPPES with a practice address in Los Angeles, California.

20 Healthcare Providers

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How Los Angeles compares with the U.S.

Los Angeles has 0.5 clinicians in Colon & Rectal Surgery per 100,000 residents, about 73% of the U.S. rate of 0.7.

That is 20 active clinicians in Colon & Rectal Surgery with a practice address in Los Angeles, for a population of 3,857,263.

That is close to the California rate of 0.5.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places.

100% of clinicians in Colon & Rectal Surgery in Los Angeles listed in the CMS Medicare file (13 of 13) accept Medicare assignment. That is similar to the California share of 96%.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

62% of clinicians in Colon & Rectal Surgery in Los Angeles listed in the CMS Medicare file (8 of 13) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the California share of 50%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com · Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Colon & Rectal Surgery Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Colon & Rectal Surgery practitioners in Los Angeles, CA

Source: CMS PECOS

PECOS Enrolled Specialists 15 In Los Angeles, CA

Part B Lab & Imaging Eligible 17 Diagnostic Referrals

DME Ordering Eligible 18 Durable Medical Equipment

Home Health Agency Referrals 17 HHA Ordering Eligible

Showing 1–20 of 20 providers

With recent CMS data first, then A–Z

Dr. Jc Chen , MD

Colon & Rectal Surgery

Active NPI Status

1500 San Pablo St, Los Angeles, CA 900335313

Phone: 8008722273

NPI Identifier 1710446760

Colon & Rectal Surgery Specialists in Los Angeles, CA

How Los Angeles compares with the U.S.

Colon & Rectal Surgery Medicare (PECOS) Enrollment & Ordering Eligibility

Dr. Jc Chen , MD

Dr. Sarah Choi , MD

Dr. Kyle G Cologne , MD

Dr. Marjun Philip Narciso Duldulao , MD

Dr. Adil Farooqui , MD

Dr. Phillip Robert Fleshner , MD

Dr. Christine Hsieh , MD

Dr. Kevork Kazanjian , MD

Dr. Sarah Elizabeth Koller , MD

Dr. Mary R Kwaan , MD, MPH

Dr. Sang Won Lee , MD

Dr. Anne Yi-Jiun Lin , MD

Dr. Alessio Pigazzi , MD

Dr. Marcia Mcgory Russell , MD

Dr. Joongho Shin , MD

Dr. Glenn Thomas Ault , MD

Dr. Bobby June Harris , MD

Dr. Clifford Y. Ko , MD

Dr. Adrian E. Ortega , MD

Dr. David B Rosenfeld , MD

Frequently Asked Questions about Colon & Rectal Surgery in Los Angeles

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