Summary

Dr. Gregory Shimizu is an internal medicine physician who earned his medical degree from George Washington University School of Medicine & Health Sciences. He completed his residency training at Kaiser Permanente Medical Center and has been practicing medicine for 38 years. Dr. Shimizu is board-certified in internal medicine and speaks English.

Dr. Shimizu is affiliated with Kaiser Foundation Hospital and practices at locations in Riverside and Fontana, California. He specializes in managing complex conditions such as type 2 diabetes and cardiovascular disease including atherosclerosis. His practice focuses on providing compassionate end-of-life care through hospice services and palliative care programs designed to improve quality of life for patients facing serious illnesses.

Overview based on verified provider data

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. Adama Diarra, DOEric HarkerKarthikeyan Viswanathan, DO
Internal MedicineInternal MedicineInternal MedicineInternal Medicine
Accepts New Patients Accepts New Patients Accepts New Patients
38 Years of Experience 14 Years of Experience 25 Years of Experience 12 Years of Experience
No Virtual Visit Option Virtual Visit Available Virtual Visit Available Virtual Visit Available
Speaks English Speaks English, French, Bambara Speaks English Speaks English, Tamil
Riverside , CATIGARD , ORLyons , COPalo Alto , CA
Med School: George Washington University School Of Medicine & Health Sciences Med School: Arizona College of Osteopathic Medicine Med School: Duke University School Of Medicine 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

Dr. Gregory Hisashi Shimizu holds an active medical license in the state of California.

Medical License

Medical Doctor with an active medical license in the state of California that expires in 2027.

Education & Training

Residency

Completed their residency at Kaiser Permanente Medical Center.

Medical School

Graduated from George Washington University School Of Medicine & Health Sciences in 1988.

NPI Number

Dr. Shimizu's NPI number is 1154492130.

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Frequently Asked Questions

Where is Dr. Gregory Hisashi Shimizu's office located?
Dr. Gregory Hisashi Shimizu's office is located at 4445 Magnolia Ave, Riverside, CA, 92501.
Which hospitals is Dr. Gregory Hisashi Shimizu affiliated with?
Dr. Gregory Hisashi Shimizu is affiliated with Kaiser Foundation Hospital.
Does Dr. Gregory Hisashi Shimizu accept virtual/telehealth appointments?
Dr. Gregory Hisashi Shimizu has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Does Dr. Gregory Hisashi Shimizu accept my insurance?
You can see the insurance plans that Dr. Gregory Hisashi Shimizu accepts on their Vitals profile.
How can I make an appointment with Dr. Gregory Hisashi Shimizu?
You can find contact information for Dr. Gregory Hisashi Shimizu here on Vitals.

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