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Dr. Gregory Shimizu, MD

Dr. Gregory Shimizu, MD

Internal Medicine*
35+ years of experience

Dr. Gregory Shimizu, MD is an internist in Riverside, CA and has over 35 years of experience in the medical field. He graduated from George Washington University School of Medicine & Health Sciences in 1988. He is affiliated with Riverside Community Hospital. He is accepting new patients.

1 Star Rating
Based on 1 review 1 Star Rating (1 review)

Practice

4445 Magnolia Ave Riverside, CA 92501
(951) 788-3000

At a Glance

  • Area of Expertise
    Dr. Shimizu specializes in the area of Internal Medicine. • See board certifications
  • Practices at Top Hospital
    America’s 50 Best Hospitals for Surgical Excellence Award™ • See hospitals
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Dr. Shimizu's Reviews

Likelihood to recommend Dr. Shimizu

1.0

1 rating
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About Me

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Health care leader whose mission is to keep you healthy. Under-one-roof convenience, 24-hour advice nurse, and online access to manage your health - anytime.

  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • George Washington University School Of Medicine & Health Sciences

    Medical School, 1988
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Internal Medicine
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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Locations

Practice

Riverside Community Hospital4445 Magnolia Ave Riverside, CA 92501
1

Practice

Kaiser Permanente Fontana Medical Center9961 Sierra Ave Fontana, CA 92335
2

Affiliated Hospitals

  • Riverside Community Hospital

    4445 Magnolia Ave
    Riverside, CA 92501
    Recipient of 29
    hospital awards

    America’s 50 Best Hospitals for Surgical Excellence Award™ (2025)

    Top 5% in the nation for consistently delivering clinical quality

    America's 250 Best Hospitals Award™ (2025, 2024, 2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

    How patients felt about the care they received at this hospital.

    79%
    Patients said they were given information about recovering at home

    5% lower than the national average

    70%
    Patients said that doctors always listened to them and explained things well

    6% lower than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality