DR. TIANA ANJALI MASTERSON DO
NPI 1851087464
Emergency Medicine in Gig Harbor, WA
About Dr. Tiana Anjali Masterson Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. TIANA ANJALI MASTERSON DO (NPI 1851087464) is an individual emergency medicine provider in Gig Harbor, Washington, licensed in Washington (DO.OP.70087833) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS, is affiliated with St Clare Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Secondary Practice Locations 2
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. Tiana Anjali Masterson Do 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 Tiana Masterson reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tacoma, WA 98402
- Reassigned Medicare billing, Washington enrollment
- 1,526 clinicians in this Medicare group
Federal Way, WA 98003
- Reassigned Medicare billing, Washington enrollment
- 190 clinicians in this Medicare group
Arlington, WA 98223
- Reassigned Medicare billing, Washington enrollment
- 519 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Clare Hospital
Acute Care Hospitals · Lakewood, WASt Anthony Hospital
Acute Care Hospitals · Gig Harbor, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98332 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.
GIG HARBOR, WA 98332
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 Tiana Masterson's NPI number?
The NPI number for Tiana Masterson is 1851087464. It was assigned to this individual provider in the NPPES registry on April 17, 2023. The provider is also known as Tiana Anjali Jayanathan.
Where is Tiana Masterson located?
Tiana Masterson practices at 11567 Canterwood Blvd, Gig Harbor, WA 98332. The listed phone number is (253) 733-3969.
What is Tiana Masterson's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Tiana Masterson enrolled in Medicare?
Yes. Tiana Masterson 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 Tiana Masterson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Tiana Masterson reassigns Medicare benefits to 3 organizations: Franciscan Medical Group (Tacoma, WA), Northwest Observation Associates PC (Federal Way, WA) and Northwest Emergency Physicians LLC (Arlington, 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 Tiana Masterson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Tiana Masterson accept?
Health plans from Ambetter Health, Moda Health Plan, Inc. and Premera Blue Cross Blue Shield of Alaska list Tiana Masterson 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.
Is Tiana Masterson affiliated with any hospitals?
According to CMS data, Tiana Masterson is affiliated with St Clare Hospital and St Anthony Hospital.
When was this NPI record last updated?
The NPPES record for Tiana Masterson was last updated on June 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Tiana Anjali Masterson, DO · NPI 1851087464
Emergency Medicine physician in Gig Harbor, Washington. Individual provider, active in the CMS NPPES registry since April 17, 2023.
## Identity
- **NPI:** 1851087464 (Entity type: Individual)
- **Enumerated:** April 17, 2023
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** DO.OP.70087833 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 11567 CANTERWOOD BLVD, Gig Harbor, WA 98332-5812
- **Phone:** (253) 733-3969 · **Fax:** (253) 838-6285
## 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): Franciscan Medical Group (NPI 1831358282, Tacoma, WA); Northwest Observation Associates PC (NPI 1023539376, Federal Way, WA); Northwest Emergency Physicians LLC (NPI 1235172370, Arlington, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of New England, College Of Osteo Medicine, class of 2023
## Record status
- **NPPES last updated:** June 3, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1851087464) · Data from the CMS NPPES public registry.