Summary

Dr. Gregory Shimizu is a board-certified internal medicine physician who has dedicated 38 years to providing comprehensive medical care for adult patients. He earned his medical degree from George Washington University School of Medicine & Health Sciences and completed his residency training at Kaiser Permanente Medical Center. Throughout his extensive career, Dr. Shimizu has developed expertise in managing complex internal medicine conditions. He provides care in English to serve his diverse patient community.

Dr. Shimizu practices at Kaiser Foundation Hospital and maintains locations in Riverside and Fontana, California. He specializes in treating patients with Type 2 diabetes and helps manage cardiovascular conditions like atherosclerosis. His practice focuses on compassionate end-of-life care, including hospice services and palliative care to ensure patient comfort and dignity during challenging times.

AI-generated from data on this provider profile.

Quick Facts

  • 1
  • 38 years of experience
  • 52 insurance plans accepted
  • speaks English
  • Kaiser Permanente Medical Center
  • 1 written review
  • 1 specialty
  • 12 areas of expertise
  • 1 board certification
  • 1 hospital affiliation
  • 2 office locations
  • Male

Office Locations

Dr. Gregory Hisashi Shimizu has 2 locations

Riverside Community Hospital

4445 Magnolia AveRiverside, CA 92501

Kaiser Foundation Hospital

9961 Sierra AveFontana, CA 92335
Mon12:00 am - 12:00 pm
Tue12:00 am - 12:00 pm
Wed12:00 am - 12:00 pm
Thu12:00 am - 12:00 pm
Fri12:00 am - 12:00 pm
Sat12:00 am - 12:00 pm
Sun12:00 am - 12:00 pm

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Dr. Gregory Hisashi Shimizu, MDKarthikeyan Viswanathan, DODr. Nima Ghadimi, MDDr. Shilpa Sayana, MD
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
3.8 
4.7 
38 Years of Experience 12 Years of Experience 29 Years of Experience 22 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English, Tamil Speaks English, Spanish Speaks English
Riverside , CALos Altos , CAScottsdale , AZSHERMAN OAKS , CA
Med School: George Washington University School Of Medicine & Health Sciences Med School: Bassett Medical Center - Cooperstown, New York Med School: Univ Iberoamericana Unibe Santo Domingo Med School: The Robert Larner Md College Of Medicine At The University Of Vermont
Current Profile
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Insurance Plans Accepted by Dr. Gregory Hisashi Shimizu

  • AARP
  • Aetna
  • Aetna - HMO
  • Aetna - POS
  • Aetna - PPO
  • Alameda Alliance for Health - Medicaid (Managed)
  • Alignment Health Plan
  • Alignment Health Plan - HMO
  • AltaMed Senior BuenaCare (PACE)
  • Anthem Blue Cross
  • Blue Cross Blue Shield of New Mexico
  • BLUE CROSS of CALIFORNIA
  • BLUE CROSS of CALIFORNIA - HMO
  • Blue Shield of California
  • Blue Shield of California - HMO
  • Brand New Day
  • CalOptima
  • CareMore
  • CHAMPVA
  • CHAMPVA - HMO
  • Cigna
  • Consolidated Health Plans
  • Contra Costa Health Plan
  • Health Choice Arizona
  • Health Net
  • Health Net - HMO
  • Humana
  • Humana - HMO
  • Imperial Health Plan of California
  • Inland Empire Health Plan
  • Kaiser Permanente
  • Kaiser Permanente - Medicaid (Managed)
  • L.A. Care Health Plan
  • L.A. Care Health Plan - HMO
  • Medicaid - Medicaid
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicaid
  • Medicare - Medicare
  • Mercy Care
  • Molina Healthcare
  • Molina Healthcare - Medicaid (Managed)
  • Molina Healthcare - Medicare (Advantage HMO)
  • Optum Health
  • SCAN Health Plan
  • SCAN Health Plan - HMO
  • SCAN Health Plan - Medicare (Advantage HMO)
  • Tricare
  • Triwest Healthcare Alliance
  • UnitedHealthcare
  • UnitedHealthcare - HMO
  • Wellcare

Medical Specialties

Dr. Gregory Hisashi Shimizu has the following specialty

Specialty Expertise

Dr. Gregory Hisashi Shimizu has the following 12 areas of expertise

  • Check-up
  • Diabetes
  • Diabetes Complications
  • Heart Diseases
  • Heart Failure
  • Heartburn
  • Immunization
  • Physical
  • Stroke
  • Vaccination
  • Weight Loss
  • Weight Loss (non-surgical)

Certifications, License, & Education

38 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2027, Active

EDUCATION & TRAINING

Residency

Kaiser Permanente Medical Center

Medical School

George Washington University School Of Medicine & Health SciencesGraduated in 1988

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Frequently Asked Questions

How can I make an appointment with Dr. Gregory Shimizu?
You can find contact information for Dr. Gregory Shimizu here on Vitals.
Is Dr. Gregory Shimizu accepting new patients?
Dr. Gregory Shimizu has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Does Dr. Gregory Shimizu accept my insurance?
You can see the insurance plans that Dr. Gregory Shimizu accepts on their Vitals profile.
Does Dr. Gregory Shimizu accept virtual/telehealth appointments?
Dr. Gregory Shimizu has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. Gregory Shimizu affiliated with?
Dr. Gregory Shimizu is affiliated with Kaiser Foundation Hospital.

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