Gastroenterologist Office

office building

Office-Effective June 1, 2023 office is permanently CLOSED-please send mail to our PO box below

Comfort and convenience are the hallmarks of Glenn D Madokoro, M.D.'s office operations. To ensure your convenience below is the information you need about our hours, location, appointment scheduling, insurance acceptance, and billing.

Newport Beach, CA Gastroenterologist
Glenn D Madokoro, M.D., FACG, Inc.
PO Box 1303
Newport Beach, CA 92659-0303

Tel: (949) 548-8800
Gastroenterologist in Newport Beach, CA Call For Pricing Options

**Due to COVID-19 outbreak our hours have been shortened**

- If you need to leave a message please email us at: [email protected] or fax us at (855) 324-3537. We only answer email or phone calls during our business hours. If you need to reach Dr. Madokoro for an emergency call 949-548-8800 or go to the nearest emergency room.

-Please note due to Covid-19 access to our office is by appointment ONLY currently, sorry for this inconvenience.

Appointments- Effective June 1 2023 Dr Madokoro is retiring we are no longer arranging new visits

We know you have many choices when choosing a Gastroenterologist in Newport Beach, if you would like to arrange an appointment to see Dr. Madokoro please call our office at (949) 548-8800.

Insurance and Billing

Please contact our office to verify acceptance of your insurance plan. Qualifications for insurance coverage may differ due to the uniqueness of each procedure. We are happy to file insurance for your reimbursement as long as you are free to choose your own gastroenterologist. Please note Dr Madokoro is non-participating for MEDICARE, therefore by law we are NOT allowed to bill Medicare or secondary insurance.

Payment Options

We accept VISA, MasterCard, American Express check or CASH.

Contact Us

Send us an email if you have any interests or concerns

Our Location

PERMANENTLY CLOSED 2901 W Cst Hwy ste 200, Newp Bch, CA 92663

Office Hours


8:30 am-12:30 pm


8:30 am-3:00 pm




8:30 am-12:00 pm


8:30 am-12:00 pm