NGHI HOANG DINH MAI D.O
NPI 1487338224
Internal Medicine in Federal Way, WA
About Nghi Hoang Dinh Mai D.o NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
NGHI HOANG DINH MAI D.O (NPI 1487338224) is an individual internal medicine provider in Federal Way, Washington, licensed in Washington (OP61559573) and active in the NPI registry since June 2023. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Nghi Hoang Dinh Mai D.o is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Nghi Mai reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Seattle, WA 98101
- Reassigned Medicare billing, Washington enrollment
- 1,021 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 98003 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.
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 Nghi Mai's NPI number?
The NPI number for Nghi Mai is 1487338224. It was assigned to this individual provider in the NPPES registry on June 12, 2023.
Where is Nghi Mai located?
Nghi Mai practices at 33501 1st Way S, Federal Way, WA 98003. The listed phone number is (253) 838-2400.
What is Nghi Mai's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Nghi Mai enrolled in Medicare?
Yes. Nghi Mai is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Nghi Mai's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Nghi Mai reassigns Medicare benefits to Virginia Mason Medical Center (Seattle, WA). 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 Nghi Mai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Nghi Mai accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Nghi Mai 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 Nghi Mai was last updated on September 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 41 days 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.
# Nghi Hoang Dinh Mai, D.O · NPI 1487338224
Internal Medicine physician in Federal Way, Washington. Individual provider, active in the CMS NPPES registry since June 12, 2023.
## Identity
- **NPI:** 1487338224 (Entity type: Individual)
- **Enumerated:** June 12, 2023
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** OP61559573 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 33501 1ST WAY S, Federal Way, WA 98003-6208
- **Phone:** (253) 838-2400 · **Fax:** (253) 874-1637
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Virginia Mason Medical Center (NPI 1003970989, Seattle, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 25, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1487338224) · Data from the CMS NPPES public registry.