Medical Specialty Listing

Emergency Medicine Providers in Fullerton, CA

Browse 15 Emergency Medicine providers listed in NPPES with a practice address in Fullerton, California.

15 Healthcare Providers

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How Fullerton compares with the U.S.

Fullerton has 11 clinicians in Emergency Medicine per 100,000 residents, about 50% of the U.S. rate of 21.

That is 15 active clinicians in Emergency Medicine with a practice address in Fullerton, for a population of 140,968.

The California rate is 20 per 100,000 residents.

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.

Too few clinicians in Emergency Medicine in Fullerton are listed in the CMS Medicare file to report Medicare assignment or telehealth shares.

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 Registry addresses can be out of date.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. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Showing 1–15 of 15 providers

With recent CMS data first, then A–Z

Dr. Karl Feng , MD

Emergency Medicine

Active NPI Status

101 E Valencia Mesa Dr, Em Dept, Fullerton, CA 928353809

Phone: 7149923965

NPI Identifier 1306875190

Emergency Medicine Providers in Fullerton, CA

How Fullerton compares with the U.S.

Dr. Karl Feng , MD

Dr. Donald Greco , MD

Dr. Timothy G Greco , MD

Dr. John Jiao , MD

Dr. Iksoo Kang , MD

Dr. Kristine Koh , MD

Dr. Jeremy Joseph Lins , MD

Dr. Matthew Mckay , MD

Baljot Singh

Dr. Erwin K Song , MD

Dr. Mark E Song , MD

Dr. Daniel Abbott , MD

Dr. Scott B Jones , MD

Dr. Dennis L Ross , MD

Dr. Christina Abbott Wainwright , MD

Frequently Asked Questions about Emergency Medicine in Fullerton

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