William S Loui MD
Hematology & Oncology Physician · Oncologist in Honolulu, HI
Provider details
- Specialty
- Hematology & Oncology Physician
- Credentials
- MD
- NPI number
- 1346217718
Checked against the CMS National Provider Identifier registry on October 2, 2026.
Medicare information
- Medical school
- University of Hawaii John A. Burns School of Medicine, graduated 1989
- Also practices
- Internal Medicine
- Also sees patients at
- Castle Medical Center
642 Ulukahiki St, Suite 103, Kailua, HI 96734 · (808) 263-5241
- Castle Medical Center
- Hospital affiliations
- Adventist Health Castle, Kailua, HI · Medicare rating 4 out of 5 stars
- The Queens Medical Center, Honolulu, HI · Medicare rating 3 out of 5 stars
- Kuakini Medical Center, Honolulu, HI · Medicare rating 4 out of 5 stars
- Kahuku Medical Center, Kahuku, HI
- Straub Clinic and Hospital, Honolulu, HI · Medicare rating 4 out of 5 stars
- Medicare
- Accepts Medicare assignment (the Medicare-approved amount as full payment)
- Telehealth
- Offers telehealth visits
From Medicare’s public Care Compare data (Doctors and Clinicians), checked October 3, 2026. Ratings are Medicare’s, not Know Cancer’s. Medicare Care Compare
About
William S Loui MD is a hematology & oncology physician in Honolulu, Hawaii, registered with the federal National Provider Identifier (NPI) registry. They attended University of Hawaii John A. Burns School of Medicine, graduating in 1989. Contact the provider directly to confirm services, hours and accepted insurance.
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