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Radiology - Radiation Oncology Specialists in Orange, CA

Browse 19 Radiology - Radiation Oncology providers listed in NPPES with a practice address in Orange, California.

19 Healthcare Providers

How Orange compares with the U.S.

Orange has 14 clinicians in Radiology - Radiation Oncology per 100,000 residents, 6.6 times the U.S. rate of 2.1.

That is 19 active clinicians in Radiology - Radiation Oncology with a practice address in Orange, for a population of 138,266.

The California rate is 1.9 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. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

100% of clinicians in Radiology - Radiation Oncology in Orange listed in the CMS Medicare file (14 of 14) accept Medicare assignment. That is similar to the California share of 98%.

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.

64% of clinicians in Radiology - Radiation Oncology in Orange listed in the CMS Medicare file (9 of 14) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is higher than the California share of 58%.

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@t-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of November 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).

Radiology - Radiation Oncology Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Radiology - Radiation Oncology practitioners in Orange, CA

Source: CMS PECOS
PECOS Enrolled Specialists 16 In Orange, CA
Part B Lab & Imaging Eligible 16 Diagnostic Referrals
DME Ordering Eligible 16 Durable Medical Equipment
Home Health Agency Referrals 16 HHA Ordering Eligible
Showing 1โ€“19 of 19 providers
With recent CMS data first, then Aโ€“Z

Christina Marie Abel , NURSE PRACTITIONER

Radiology - Radiation Oncology

Active NPI Status
1000 W La Veta Ave, Orange, CA 928684304
Phone: 7147346256
NPI Identifier 1033638911
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Dr. Robert Blair Ash , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment
1000 W. Laveta Ave., Orange, CA 92868
Phone: 7147346250
NPI Identifier 1326238650
View Full Profile

Dr. Tanuja A Bhandari , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment
1000 W. Laveta Ave., Orange, CA 92868
Phone: 7147346250
NPI Identifier 1518147610
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Dr. Allen M Chen , MD

Radiology - Radiation Oncology

Active NPI Status
101 The City Dr S, Orange, CA 928683201
Phone: 7148807812
NPI Identifier 1518992981
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Dr. Eric Chen , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 6575793129
NPI Identifier 1578126124
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Dr. Megan Eileen Daly , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 7144568888
NPI Identifier 1780863340
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Dr. Steven Warren Davis , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 7148807812
NPI Identifier 1558463653
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Dr. Shera Feinstein , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 7144568888
NPI Identifier 1437600194
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Dr. Jeremy Phillip Harris , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S Bldg 23, Orange, CA 92868
Phone: 7144568095
NPI Identifier 1922427053
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Dr. Erin Healy , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 7148807812
NPI Identifier 1437407863
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Dr. Robert D Hesselgesser , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment
101 The City Dr S, Orange, CA 928683201
Phone: 7148807812
NPI Identifier 1710979687
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Dr. Caressa Hui , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S, Orange, CA 928683201
Phone: 7144568888
NPI Identifier 1891254165
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Dr. Jeffrey V Kuo , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment
Uci Medical Center, 101 The City Drive South, Orange, CA 92868
Phone: 7144568978
NPI Identifier 1063592194
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Dr. Aaron Benjamin Simon , MD, PhD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S Rm 139, Orange, CA 928683201
Phone: 7144568074
NPI Identifier 1801250550
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Dr. Venita Lai Williams , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment
1000 W. Laveta Ave., Orange, CA 92868
Phone: 7147346250
NPI Identifier 1659581775
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Dr. Krishna S Hanubal , MD

Radiology - Radiation Oncology

Active NPI Status
101 The City Dr S Bldg 23, Orange, CA 928683201
Phone: 7144568000
NPI Identifier 1568154458
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Dr. Garrett Harada , MD

Radiology - Radiation Oncology

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
101 The City Dr S Bldg 23, Orange, CA 928683201
Phone: 7144568000
NPI Identifier 1831726330
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Dr. Jino Park , MD

Radiology - Radiation Oncology

Active NPI Status
101 The City Dr S Bldg 23, Orange, CA 928683201
Phone: 7144565651
NPI Identifier 1164161907
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Dr. Jason Chun Hang Wong , MD

Radiology - Radiation Oncology

Active NPI Status
101 The City Dr S, B-23 Rm129, Rt-26, Orange, CA 928683201
Phone: 7144565651
NPI Identifier 1548426018
View Full Profile

Frequently Asked Questions about Radiology - Radiation Oncology in Orange

How do I check a Radiology - Radiation Oncology practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.