Oncology

Susan O'Brien, M.D.

Orange, CA

Dr. Susan O'Brien, MD is an Internist who practices in Orange, CA. She is 72 years old and has been practicing for 46 years.

Concierge Match Report

Is Dr. O'Brien right for you?

We'll build a personalized evaluation of Dr. O'Brien for your case, side-by-side against the top alternatives in their subspecialty.

In-depth evaluation of Dr. O'Brien for your specific case
Side-by-side comparison vs. the top alternatives

Fully credited toward membership if you join within 30 days

$25

Start my Match Report — $25

Credentials

Years in Practice

45+ years

Peer Recognition

Castle Connolly — Top Doctor
2002-2026 (25 years)
Healthgrades — Healthgrades Honor Roll

Clinical Focus

Subspecialties

Medical Oncology

Conditions & Treatments

Cancer SurvivorshipChemotherapy

Insurance(s) Accepted

Please verify your coverage with the provider — plan participation can change.

Practice Details

Hospital Affiliations

Uci Health-orange

Conditions Dr. O'Brien treats

Insurance accepted

Frequently asked

Does Dr. O'Brien accept Anthem Blue Cross Blue Shield insurance?

Susan O'Brien's public profile lists Anthem Blue Cross Blue Shield, Blue Cross Blue Shield, and Blue Shield of California plus 6 more health plans as accepted plans. Plan participation can change — confirm directly with the practice before your visit.

Where does Dr. O'Brien practice?

Susan O'Brien practices in Orange, CA with hospital affiliations including Uci Health-orange.

What does Dr. O'Brien specialize in?

Susan O'Brien is a board-certified oncology specialist with focus areas in Medical Oncology.

How long has Dr. O'Brien been practicing?

Susan O'Brien has 46+ years of clinical experience in oncology.