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DR. MATTHEW J GADBAW MD
NPI 1558392969
Hospitalist in Honolulu, HI

Active since July 05, 2006PECOS EnrolledAccepts Medicare Assignment
888 S KING ST, HONOLULU, HI 96813(808) 522-4000(808) 522-4769 Get Directions Write a Review

NPPES record last updated: September 9, 2025. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Sep 9, 2025, Nov 29, 2021, Mar 9, 2021 and 1 more (4 updates tracked since 2017).

About Dr. Matthew J Gadbaw Md NPPES

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

DR. MATTHEW J GADBAW MD (NPI 1558392969) is an individual hospitalist provider in Honolulu, Hawaii, licensed in Hawaii (MD-25651) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Wilcox Memorial Hospital, and is a graduate of University Of Washington School Of Medicine (2000).

NPPES Registry Identity

NPI1558392969
Entity TypeIndividualMale
Primary Taxonomy208M00000X
Provider Legal NameDR. MATTHEW J GADBAWCredential: MD
Location Address888 S KING STHonolulu, HI 96813-3097
Mailing Address888 S King StHonolulu, HI 96813-3097 · (808) 522-4000 · Fax (808) 522-4769
Phone(808) 522-4000
Fax(808) 522-4769
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 2000
Enumeration DateJuly 5, 2006
Last NPPES UpdateSeptember 9, 20254 updates tracked since enumeration
NPPES CertifiedSeptember 9, 2025
✔ NPI 1558392969 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
License✔ Licensed in HI · MD-25651
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
888 S KING ST, Honolulu, HI 96813
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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

Dr. Matthew J Gadbaw Md 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 ID8224001599
PECOS Enrollment IDI20251007001868
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 Reassignments

5

Medicare enrollment records show Matthew Gadbaw reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Straub Clinic & Hospital
Same address
Multi-Specialty
888 S KING ST
Honolulu, HI 96813
  • Reassigned Medicare billing, Hawaii enrollment
  • 664 clinicians in this Medicare group
NPI 1457306508 (808) 522-4000
Kauai Medical Clinic
108 mi
Multi-Specialty
3-3420 KUHIO HWY, SUITE B
Lihue, HI 96766
  • Reassigned Medicare billing, Hawaii enrollment
  • 298 clinicians in this Medicare group
NPI 1376596643 (808) 245-1500
Providence Health & Services - Oregon
2,534 mi
Clinic/Center
960 N 16TH ST, SUITE 304
Springfield, OR 97477
  • Reassigned Medicare billing, Oregon enrollment
  • 1,501 clinicians in this Medicare group
NPI 1336459460 (541) 744-6172
Providence Health & Services Oregon
2,554 mi
Rural Health
171 N LARCH ST STE 16
Cannon Beach, OR 97110
  • Reassigned Medicare billing, Oregon enrollment
  • 301 clinicians in this Medicare group
NPI 1841756764 (503) 717-7400
Providence Hood River Memorial Hospital
2,633 mi
Urgent Care
14040 HIGHWAY 35
Mt Hood, OR 97041
  • Reassigned Medicare billing, Oregon enrollment
  • Medicare enrollment name: Providence Health & Services Oregon
  • 267 clinicians in this Medicare group
NPI 1437355955 (503) 337-2292

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

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Wilcox Memorial Hospital

Acute Care Hospitals · Lihue, HI
2/5 CMS rating
OwnershipGovernment - Federal
CMS Certification Number120014
Location3-3420 Kuhio HighwayLihue, HI 96766 · Kauai County
Emergency services Birthing friendly

Straub Clinic And Hospital

Acute Care Hospitals · Honolulu, HI
4/5 CMS rating
OwnershipProprietary
CMS Certification Number120022
Location888 S King StreetHonolulu, HI 96813 · Honolulu County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 96813 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
$136.68 typical visit price
range $60.53 – $180.05
Typical copayment $34.17 (range $15.13 – $45.01)
Most-billed visit code 99204
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.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. SYLVIA Y. TERADA NP
Nurse Practitioner
888 S KING ST, DERMATOLOGY DEPARTMENT
HONOLULU, HI 96813
Honolulu County (808) 522-4360
DR. JOSEPH R. VIERRA M.D.
Internal Medicine (Critical Care Medicine)
888 S KING ST
HONOLULU, HI 96813
Honolulu County (808) 522-4000
DR. BEAU K. NAKAMOTO M.D.
Psychiatry & Neurology (Neurology)
888 S KING ST
HONOLULU, HI 96813
Honolulu County (808) 522-4000
DR. JAY L. GREKIN M.D.
Dermatology
888 S KING ST
HONOLULU, HI 96813
Honolulu County (808) 522-4360
DR. TIMOTHY CHRISTOPHER LAEGER M.D.
Emergency Medicine
888 S KING ST
HONOLULU, HI 96813
Honolulu County (808) 522-3714
SCOTT T YOKOTA
Physical Therapist
888 S KING ST
HONOLULU, HI 96813
Honolulu County (808) 522-3496
JESSICA GREEN
Surgery (Vascular Surgery)
888 S KING ST
HONOLULU, HI 96813
Honolulu County (808) 522-4469
TAMMY YAGUCHI MPT
Physical Therapist
888 S KING ST
HONOLULU, HI 96813
Honolulu County (808) 522-4602

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 Matthew Gadbaw's NPI number?

The NPI number for Matthew Gadbaw is 1558392969. It was assigned to this individual provider in the NPPES registry on July 5, 2006.

Where is Matthew Gadbaw located?

Matthew Gadbaw practices at 888 S King St, Honolulu, HI 96813. The listed phone number is (808) 522-4000.

What is Matthew Gadbaw's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Matthew Gadbaw enrolled in Medicare?

Yes. Matthew Gadbaw 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 organizations bill Medicare for Matthew Gadbaw's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Gadbaw reassigns Medicare benefits to 5 organizations: Straub Clinic & Hospital (Honolulu, HI), Kauai Medical Clinic (Lihue, HI), Providence Health & Services - Oregon (Springfield, OR), Providence Health & Services Oregon (Cannon Beach, OR) and Providence Hood River Memorial Hospital (Mt Hood, OR). Each 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 Matthew Gadbaw's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Matthew Gadbaw affiliated with any hospitals?

According to CMS data, Matthew Gadbaw is affiliated with Wilcox Memorial Hospital and Straub Clinic And Hospital.

When was this NPI record last updated?

The NPPES record for Matthew Gadbaw was last updated on September 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 months 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.