NANCY SIYANG MANGLALLAN-YANG MD
NPI 1083238406
Obstetrics & Gynecology in Kahului, HI
About Nancy Siyang Manglallan-yang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NANCY SIYANG MANGLALLAN-YANG MD (NPI 1083238406) is an individual obstetrics & gynecology provider in Kahului, Hawaii, licensed in Hawaii (MD-25818) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, maintains a secondary practice location in Wailuku, and is a graduate of University Of Minnesota Medical School (2020).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Secondary Practice Location 1
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
Nancy Siyang Manglallan-yang 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 Nancy Manglallan-yang reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Kamuela, HI 96743
- Reassigned Medicare billing, Hawaii enrollment
- 277 clinicians in this Medicare group
Honolulu, HI 96813
- Reassigned Medicare billing, Hawaii enrollment
- 859 clinicians in this Medicare group
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 129 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 96732 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Nancy Manglallan-yang's NPI number?
The NPI number for Nancy Manglallan-yang is 1083238406. It was assigned to this individual provider in the NPPES registry on June 1, 2020. The provider is also known as Nancy Yang MD.
Where is Nancy Manglallan-yang located?
Nancy Manglallan-yang practices at 100 Hookele St Ste 910, Kahului, HI 96732. The listed phone number is (808) 686-4690.
What is Nancy Manglallan-yang's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is Nancy Manglallan-yang enrolled in Medicare?
Yes. Nancy Manglallan-yang 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 Nancy Manglallan-yang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nancy Manglallan-yang reassigns Medicare benefits to 3 organizations: Queens North Hawaii Community Hospital (Kamuela, HI), Queens University Medical Group (Honolulu, HI) and Obstetrix Medical Group Of Washington Inc Ps (Seattle, WA). 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 Nancy Manglallan-yang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nancy Manglallan-yang accept?
Health plans from HMSA and Premera Blue Cross Blue Shield of Alaska list Nancy Manglallan-yang 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 Nancy Manglallan-yang was last updated on October 2, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Nancy Siyang Manglallan-Yang, MD · NPI 1083238406
Obstetrics & Gynecology physician in Kahului, Hawaii. Individual provider, active in the CMS NPPES registry since June 1, 2020.
## Identity
- **NPI:** 1083238406 (Entity type: Individual)
- **Enumerated:** June 1, 2020
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** MD-25818 (Hawaii)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 HOOKELE ST STE 910, Kahului, HI 96732-3548
- **Phone:** (808) 686-4690 · **Fax:** (808) 686-2127
## 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): Queens North Hawaii Community Hospital (NPI 1124009584, Kamuela, HI); Queens University Medical Group (NPI 1891441382, Honolulu, HI); Obstetrix Medical Group Of Washington Inc Ps (NPI 1861599573, Seattle, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 2020
## Record status
- **NPPES last updated:** October 2, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1083238406) · Data from the CMS NPPES public registry.