GIANNOULA TANSARLI MD, PHD
NPI 1255918447
Pathology - Clinical Pathology/Laboratory Medicine in Seattle, WA
About Giannoula Tansarli Md, Phd NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GIANNOULA TANSARLI MD, PHD (NPI 1255918447) is an individual clinical pathology/laboratory medicine provider in Seattle, Washington, licensed in Washington (MD61488975) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS, is affiliated with University Of Washington Medical Ctr, and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses 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
Giannoula Tansarli Md, Phd 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 Reassignment
Medicare enrollment records show Giannoula Tansarli reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- 4,364 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
University Of Washington Medical Ctr
Acute Care Hospitals · Seattle, WAHarborview Medical Center
Acute Care Hospitals · Seattle, WAValley Medical Center
Acute Care Hospitals · Renton, WAEvergreenhealth Medical Center
Acute Care Hospitals · Kirkland, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98195 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.
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
SEATTLE, WA 98195
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 Giannoula Tansarli's NPI number?
The NPI number for Giannoula Tansarli is 1255918447. It was assigned to this individual provider in the NPPES registry on March 25, 2021.
Where is Giannoula Tansarli located?
Giannoula Tansarli practices at 1959 NE Pacific St, Seattle, WA 98195. The listed phone number is (401) 400-9118.
What is Giannoula Tansarli's specialty?
The primary specialty registered for this NPI is Pathology, specializing in Clinical Pathology/Laboratory Medicine, with taxonomy code 207ZP0105X.
Is Giannoula Tansarli enrolled in Medicare?
Yes. Giannoula Tansarli 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 organization bills Medicare for Giannoula Tansarli's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Giannoula Tansarli reassigns Medicare benefits to The Association Of University Physicians (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 Giannoula Tansarli's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Giannoula Tansarli accept?
Health plans from Premera Blue Cross Blue Shield of Alaska list Giannoula Tansarli 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 Giannoula Tansarli affiliated with any hospitals?
According to CMS data, Giannoula Tansarli is affiliated with University Of Washington Medical Ctr, Harborview Medical Center, Valley Medical Center and Evergreenhealth Medical Center.
When was this NPI record last updated?
The NPPES record for Giannoula Tansarli was last updated on April 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Giannoula Tansarli, MD, PHD · NPI 1255918447
Clinical Pathology/Laboratory Medicine physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since March 25, 2021.
## Identity
- **NPI:** 1255918447 (Entity type: Individual)
- **Enumerated:** March 25, 2021
- **Primary specialty:** Pathology - Clinical Pathology/Laboratory Medicine · taxonomy 207ZP0105X
- **State license:** MD61488975 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1959 NE PACIFIC ST, Seattle, WA 98195-2855
- **Phone:** (401) 400-9118
## 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:** The Association Of University Physicians (NPI 1023041159, Seattle, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** April 28, 2026
---
Source: [NPI Profile](https://npiprofile.com/npi/1255918447) · Data from the CMS NPPES public registry.