Summary

Dr. Gregory Shimizu is an internal medicine physician with nearly four decades of medical experience. He earned his medical degree from George Washington University School of Medicine & Health Sciences and completed his residency training at Kaiser Permanente Medical Center. With 38 years in practice, Dr. Shimizu has developed extensive expertise in managing complex internal medicine cases. He provides care to patients in English.

Dr. Shimizu practices at Kaiser Foundation Hospital and sees patients in Riverside and Fontana, California. He specializes in treating diabetes, particularly Type 2 diabetes, and cardiovascular conditions including atherosclerosis. His practice also encompasses end-of-life care, offering hospice services and palliative care to patients and families during challenging times. Dr. Shimizu focuses on life-prolonging treatments when appropriate for his patients' individual circumstances.

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, MDDr. Tooba Rehman, MDDr. Shilpa Sayana, MDKarthikeyan Viswanathan, DO
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
4.7 
38 Years of Experience 16 Years of Experience 22 Years of Experience 12 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English Speaks English, Tamil
Riverside , CAKaty , TXSHERMAN OAKS , CALos Altos , CA
Med School: George Washington University School Of Medicine & Health Sciences Med School: CHICAGO MEDICAL SCHOOL AT ROSALIND FRANKLIN UNIVERSITY OF MEDICINE & SCIENCE Med School: The Robert Larner Md College Of Medicine At The University Of Vermont Med School: Bassett Medical Center - Cooperstown, New York
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

Where is Dr. Gregory Shimizu's office located?
Dr. Gregory Shimizu's office is located at 4445 Magnolia Ave, Riverside, CA, 92501.
What languages does Dr. Gregory Shimizu speak?
Dr. Gregory Shimizu speaks English.
Which hospitals is Dr. Gregory Shimizu affiliated with?
Dr. Gregory Shimizu is affiliated with Kaiser Foundation Hospital.
Does Dr. Gregory Shimizu accept my insurance?
You can see the insurance plans that Dr. Gregory Shimizu accepts on their Vitals profile.
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.

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