Summary

Dr. William Loui specializes in oncology and internal medicine, focusing on comprehensive cancer care and general medical treatment. He earned his medical degree from the University of Hawaii at Manoa and brings 37 years of clinical experience to his practice. Dr. Loui is fluent in both English and Tagalog.

Dr. Loui maintains affiliations with Pali Momi Medical Center, Adventist Health Castle, and The Queens Medical Center West Oahu, with his practice locations in Kailua, Hawaii. His expertise includes treating breast cancer, including advanced and recurring cases, as well as specialized conditions like Paget disease of the breast. He performs diagnostic procedures such as CT scans of the chest and complete blood count testing. Patients have given him an average rating of 2.9 on Vitals.

Overview based on verified provider data

Quick Facts

  • 2.9
  • 37 years of experience
  • speaks English, Tagalog
  • University Of Hawaii At Manoa
  • 3 written reviews
  • 2 specialties
  • 18 areas of expertise
  • 2 board certifications
  • 3 hospital affiliations
  • 3 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. William S Loui has 3 locations

Adventist Health Castle

640 Ulukahiki StKailua, HI 96734

Adventist Health Castle Oncology Care

642 Ulukahiki St Ste 300Kailua, HI 96734
Mon8:00 am - 4:30 pm
Tue8:00 am - 4:30 pm
Wed8:00 am - 4:30 pm
Thu8:00 am - 4:30 pm
Fri8:00 am - 4:30 pm
SatClosed
SunClosed

Adventist Health Castle

642 Ulukahiki St Ste 103Kailua, HI 96734
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

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Dr. William S Loui, MD
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Dr. William S Loui, MDDr. Taro Shimizu, MDDr. Hajime ToyoshimaDr. Christie Goeggel Lamping, MD
OncologyInternal MedicineGeriatric MedicineInternal Medicine
2.9 
37 Years of Experience 21 Years of Experience 48 Years of Experience 56 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks English, Tagalog
Kailua , HIHonolulu , HIHonolulu , HIPearl Harbor , HI
Med School: University Of Hawaii At Manoa Med School: Ehime University School Of Medicine Med School: Kyushu University Faculty Of Medicine Med School: Sidney Kimmel Medical College At Thomas Jefferson University
Current Profile
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Insurance Plans Accepted by Dr. William S Loui

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Medical Specialties

Dr. William S Loui has the following 2 specialties

Specialty Expertise

Dr. William S Loui has the following 18 areas of expertise

  • Acute Myeloid Leukemia
  • Adult T-Cell Leukemia-Lymphoma
  • Blood Cancer
  • Bone Marrow Transplant
  • Cancer
  • Chemotherapy
  • Chronic B-Cell Lymphocytic Leukemia
  • Chronic Myeloid Leukemia
  • Clinical Research
  • Deep Vein Thrombosis
  • Epidemiology
  • Hepatitis C
  • Hodgkin's Lymphoma
  • Internal Medicine
  • Leukemia
  • Lymphoma
  • Myelofibrosis
  • Myeloma

Certifications, License, & Education

37 Years Experience

Dr. William S Loui holds an expired medical license in the state of Hawaii.

Medical License

Medical Doctor with an expired medical license in the state of Hawaii that expired in 2026.

Education & Training

Medical School

Graduated from University Of Hawaii At Manoa in 1989.

NPI Number

Dr. Loui's NPI number is 1346217718.

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Frequently Asked Questions

Does Dr. William Loui accept my insurance?
You can see the insurance plans that Dr. William Loui accepts on their Vitals profile.
Does Dr. William Loui accept virtual/telehealth appointments?
Dr. William Loui has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Where is Dr. William Loui's office located?
Dr. William Loui's office is located at 640 Ulukahiki St, Kailua, HI, 96734.
Which hospitals is Dr. William Loui affiliated with?
Dr. William Loui is affiliated with Pali Momi Medical Center, Adventist Health Castle, and The Queens Medical Center West Oahu.
How can I make an appointment with Dr. William Loui?
You can find contact information for Dr. William Loui here on Vitals.

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