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MRS. ROBYN MAHANA SANDEFUR PSY D
NPI 1235421926
Psychologist - Clinical in Honolulu, HI

Active since May 12, 2011PECOS EnrolledAccepts Medicare Assignment
401 KAMAKEE STREET, SUITE 409, HONOLULU, HI 96814(808) 729-7698(866) 313-3630 Get Directions Write a Review

NPPES record last updated: June 28, 2018. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 28, 2018, Jan 23, 2017 (2 updates tracked since 2017).

About Mrs. Robyn Mahana Sandefur Psy D NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. ROBYN MAHANA SANDEFUR PSY D (NPI 1235421926) is an individual clinical provider in Honolulu, Hawaii, licensed in Hawaii (PSY-1255) and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS and is a graduate of Other (2010).

NPPES Registry Identity

NPI1235421926
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameMRS. ROBYN MAHANA SANDEFURCredential: PSY D
Location Address401 KAMAKEE STREET, SUITE 409Honolulu, HI 96814
Mailing Address401 Kamake'e Street, Suite 409Honolulu, HI 96814 · (808) 729-7698 · Fax (866) 313-3630
Phone(808) 729-7698
Fax(866) 313-3630
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateMay 12, 2011
Last NPPES UpdateJune 28, 20182 updates tracked since enumeration
✔ NPI 1235421926 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in HI · PSY-1255
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
401 KAMAKEE STREET, Honolulu, HI 96814
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Other Names 1

Former Name (1)Ms. Robyn Mahana Chang Psy D

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include HMSA.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mrs. Robyn Mahana Sandefur Psy D is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID3274702105
PECOS Enrollment IDI20110811000200
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Robyn Sandefur reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

I Ola Lahui Inc
0.7 mi
Clinical
677 ALA MOANA BLVD, SUITE 904
Honolulu, HI 96813
  • Reassigned Medicare billing, Hawaii enrollment
  • 14 clinicians in this Medicare group
NPI 1194967224 (808) 525-6255

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96814 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$180.05 typical visit price
range $60.53 – $180.05
Typical copayment $45.01 (range $15.13 – $45.01)
Most-billed visit code 99205
Established Patient
$105.65 typical visit price
range $20.09 – $147.56
Typical copayment $26.41 (range $5.02 – $36.89)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Robyn Sandefur's NPI number?

The NPI number for Robyn Sandefur is 1235421926. It was assigned to this individual provider in the NPPES registry on May 12, 2011. The provider is also known as Ms. Robyn Mahana Chang Psy D.

Where is Robyn Sandefur located?

Robyn Sandefur practices at 401 Kamakee Street Suite 409, Honolulu, HI 96814. The listed phone number is (808) 729-7698.

What is Robyn Sandefur's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Robyn Sandefur enrolled in Medicare?

Yes. Robyn Sandefur is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Robyn Sandefur's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Robyn Sandefur reassigns Medicare benefits to I Ola Lahui Inc (Honolulu, HI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Robyn Sandefur's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Robyn Sandefur accept?

Health plans from HMSA list Robyn Sandefur as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Robyn Sandefur was last updated on June 28, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.