Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Ruby Ann Hayasaka, RDN

Individual provider Registered Dietitian · NPI 1831723071

Ruby Ann Hayasaka, RDN is registered under Registered Dietitian OR Nutrition Professional in Honolulu, Hawaii. Qualified in 1971, 55 years ago. Practices with Malama Kidney Center, LLC, a 2-clinician group, accepts Medicare assignment and offers telehealth.

Years since qualifying
55
In the registry since
2020
What do these letters mean?
RDN — Registered Dietitian Nutritionist
The current title for a registered dietitian.

See every abbreviation used in this directory →

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Practice location Address checks out

1357 Kapiolani Blvd Ste 1460
Honolulu, HI 96814-4509
Phone: (808) 942-1852
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X

Record details

NPI number1831723071
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDN
Sole proprietorYes
NPI enumeratedFebruary 26, 2020
Last updated in NPPESFebruary 26, 2020
Certification dateFebruary 26, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyREGISTERED DIETITIAN OR NUTRITION PROFESSIONAL
Medical schoolOTHER
Graduated 1971 (55 years in practice)
Group practice Malama Kidney Center, Llc. — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients44
Services billed 259 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Malama Kidney Center, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in Honolulu