Ruby Ann Hayasaka, RDN
Ruby Ann Hayasaka, RDN has been part of the Honolulu medical community since 2020 in independent practice. With 55+ years of experience, she has been practicing in the Honolulu area. Among her Medicare patients, common conditions include hypertension, diabetes, and high cholesterol (per CMS data).
Older · 2261dNPPES updated 2020-02-26 · verify on CMS
Contact & Location
Practice Location
1357 Kapiolani Blvd Ste 1460, Honolulu, HI 96814-4509
How Does This Doctor Compare?
Medicare Patients
45
Unique beneficiaries
Boutique practiceData Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, Diabetes, and High Cholesterol.
High blood pressure — a leading risk factor for heart disease and stroke
A condition where the body cannot properly regulate blood sugar levels
Elevated cholesterol or triglycerides that increase heart disease risk
Gradual loss of kidney function over time, often linked to diabetes or hypertension
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
Joint inflammation causing pain, swelling, and stiffness
The heart cannot pump blood efficiently enough to meet the body's needs
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Feb 25, 2020
CMS-verified certification date
55 years in practice
Senior practitioner
A Registered Dietitian (RD)/Registered Dietitian Nutritionist (RDN) is an individual uniquely trained in the science of nutrition and practice of dietetics to design and provide medical nutrition therapy (MNT) and other evidence-based applications of the Nutrition Care Process (NCP) that exemplify the profession's systematic approach to providing high quality nutrition care. Registered dietitians provide MNT for the purpose of disease prevention or management, or to treat or rehabilitate an illness, injury, or condition, with the use of specific, indicated physical and cognitive nutrition care services comprised of one or more of the following aspects of the NCP: nutrition assessment/reassessment, nutrition diagnosis, nutrition intervention (e.g., nutrition counseling, therapeutic diet ordering, and nutrition education) and nutrition monitoring and evaluation.
Taxonomy: 133V00000X
Mailing address
41-1694 Kalanianaole Hwy, Waimanalo, HI 96795-1142
Differs from practice location
Virtual Dietitian, Registered Care With Ruby Ann Hayasaka
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Ruby Ann Hayasaka for blood pressure monitoring, diabetes check-ins, cholesterol management — no travel to Honolulu required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about Ruby Ann Hayasaka
Dr. Hayasaka is listed as active in the NPI registry with telehealth listed in Honolulu, HI. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (808) 942-1852.
Sourced from CMS NPPES · OIG LEIE · CMS Physician Comparator. See Data Methodology.
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Contact Ruby Ann Hayasaka
Practice Location
1357 Kapiolani Blvd Ste 1460, Honolulu, HI 96814-4509
Mailing Address
41-1694 Kalanianaole Hwy, Waimanalo, HI 96795-1142
This is a provider directory. Contact the office directly to schedule appointments.
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