WILLY TREJO GAN MD
NPI 1568101145
Psychiatry & Neurology - Neurology in Seattle, WA
About Willy Trejo Gan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLY TREJO GAN MD (NPI 1568101145) is an individual neurology provider in Seattle, Washington, licensed in Washington (MD.MD.70123807) and active in the NPI registry since June 2022. He is enrolled in Medicare PECOS and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Willy Trejo Gan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Willy Gan 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.
Physician 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 Willy Gan's NPI number?
The NPI number for Willy Gan is 1568101145. It was assigned to this individual provider in the NPPES registry on June 1, 2022.
Where is Willy Gan located?
Willy Gan practices at 1959 NE Pacific St, Seattle, WA 98195. The listed phone number is (206) 520-5000.
What is Willy Gan's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Willy Gan enrolled in Medicare?
Yes. Willy Gan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Willy Gan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Willy Gan 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 Willy Gan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Willy Gan was last updated on June 23, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Willy Trejo Gan, MD · NPI 1568101145
Neurology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since June 1, 2022.
## Identity
- **NPI:** 1568101145 (Entity type: Individual)
- **Enumerated:** June 1, 2022
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** MD.MD.70123807 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1959 NE PACIFIC ST, Seattle, WA 98195-0001
- **Phone:** (206) 520-5000
## 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:** 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 2022
## Record status
- **NPPES last updated:** June 23, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1568101145) · Data from the CMS NPPES public registry.