Expertise in
18
conditions

Dr. James W. O'brien

Gastroenterology
Kaiser Permanente
South San Francisco Medical Center
South San Francisco, CA 
Accepting New Patients
Expertise in
18
conditions
Kaiser Permanente
South San Francisco Medical Center
South San Francisco, CA 

Overview

James O'brien is a Gastroenterologist practicing medicine in South San Francisco, California.

Dr. O'brien is highly rated in 18 conditions, according to our data. His clinical expertise encompasses Barrett Esophagus, Bile Duct Obstruction, Gallstones, Colonoscopy, and Endoscopy.

He is actively involved in clinical research, co-authoring 24 peer reviewed articles. Dr. O'brien is currently accepting new patients.

Specialties

Gastroenterology

Licenses

Internal Medicine in HI

Hospital Affiliations

Wilcox Memorial Hospital
Adventist Health Castle
Straub Clinic And Hospital
Pali Momi Medical Center

Languages Spoken

English

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
AlohaCare
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE SNP
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Cigna
  • EPO
  • HMO
  • PPO
Devoted Health
  • MEDICARE MAPD
  • OTHER MEDICARE
Hawaii Medical Assurance Association
  • PPO
HMSA
  • HMO
  • PPO
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Independent Health
  • EPO
  • POS
  • PPO
Kaiser Permanente
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER MEDICARE
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 10 Less Insurance Carriers -

Locations

South San Francisco Medical Center
South San Francisco, CA 94080

Additional Areas of Focus

Dr. O'brien has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

24 Total Publications

A spike in disguise.
A spike in disguise.
Journal: Heart (British Cardiac Society)
Published: May 12, 2026
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Frequently Asked Questions about Dr. James W. O'brien

How do I make an appointment with Dr. James W. O'brien?

You can book an appointment with Dr. James W. O'brien by calling their office at 650-742-2511. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. James W. O'brien a top-rated expert for Barrett Esophagus?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. James W. O'brien is classified as an Advanced expert for Barrett Esophagus, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. James W. O'brien specialize in?

While Dr. James W. O'brien is a Gastroenterology, they have specific expertise in Barrett Esophagus, Bile Duct Obstruction, and Gallstones. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Gastroenterology.

Does Dr. James W. O'brien participate in research or clinical trials?

Yes. Dr. James W. O'brien has published 24 articles and abstracts on conditions like Barrett Esophagus. You can view a list of Dr. James W. O'brien's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. James W. O'brien accept my insurance?

Dr. James W. O'brien accepts most major insurance plans, including Aetna and AlohaCare. We recommend calling the office directly at 650-742-2511 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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