DR. GREIGH ISAMU HIRATA MD
NPI 1144378670
Obstetrics & Gynecology - Maternal & Fetal Medicine in Honolulu, HI
About Dr. Greigh Isamu Hirata Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GREIGH ISAMU HIRATA MD (NPI 1144378670) is an individual maternal & fetal medicine provider in Honolulu, Hawaii, licensed in Hawaii (7223) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1987).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted 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
Dr. Greigh Isamu Hirata 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.
Medicare Billing Reassignments
3Medicare enrollment records show Greigh Hirata reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Honolulu, HI 96814
- Reassigned Medicare billing, Hawaii enrollment
- 3 clinicians in this Medicare group
Honolulu, HI 96819
- Reassigned Medicare billing, Hawaii enrollment
- 1,187 clinicians in this Medicare group
Kamuela, HI 96743
- Reassigned Medicare billing, Hawaii enrollment
- 277 clinicians in this Medicare group
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.
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.
HONOLULU, HI 96814
HONOLULU, HI 96814
HONOLULU, HI 96814
HONOLULU, HI 96814
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 Greigh Hirata's NPI number?
The NPI number for Greigh Hirata is 1144378670. It was assigned to this individual provider in the NPPES registry on January 8, 2007.
Where is Greigh Hirata located?
Greigh Hirata practices at 1600 Kapiolani Blvd Suite 1025, Honolulu, HI 96814. The listed phone number is (808) 945-2229.
What is Greigh Hirata's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Maternal & Fetal Medicine, with taxonomy code 207VM0101X.
Is Greigh Hirata enrolled in Medicare?
Yes. Greigh Hirata 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 Greigh Hirata's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Greigh Hirata reassigns Medicare benefits to 3 organizations: Greigh I Hirata MD Inc (Honolulu, HI), Hawaii Permanente Medical Group Inc (Honolulu, HI) and Queens North Hawaii Community Hospital (Kamuela, HI). 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 Greigh Hirata's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Greigh Hirata accept?
Health plans from HMSA list Greigh Hirata 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 Greigh Hirata was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Dr. Greigh Isamu Hirata, MD · NPI 1144378670
Maternal & Fetal Medicine physician in Honolulu, Hawaii. Individual provider, active in the CMS NPPES registry since January 8, 2007.
## Identity
- **NPI:** 1144378670 (Entity type: Individual)
- **Enumerated:** January 8, 2007
- **Primary specialty:** Obstetrics & Gynecology - Maternal & Fetal Medicine · taxonomy 207VM0101X
- **State license:** 7223 (Hawaii)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1600 KAPIOLANI BLVD, SUITE 1025, Honolulu, HI 96814-3801
- **Phone:** (808) 945-2229 · **Fax:** (808) 945-2230
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Greigh I Hirata MD Inc (NPI 1144371378, Honolulu, HI); Hawaii Permanente Medical Group Inc (NPI 1710945969, Honolulu, HI); Queens North Hawaii Community Hospital (NPI 1124009584, Kamuela, HI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1987
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicaid 55974201 (HI); Medicare UPIN E41301 (HI); Medicare ID-Type Unspecified 100201 (HI)
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Source: [NPI Profile](https://npiprofile.com/npi/1144378670) · Data from the CMS NPPES public registry.