WILLY TREJO GAN MD
NPI 1568101145
Psychiatry & Neurology - Neurology in Seattle, WA

Q: 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.

Q: What is Willy Gan's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.

Q: 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 2 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.

Active since June 01, 2022PECOS Enrolled

1959 NE PACIFIC ST, SEATTLE, WA 98195(206) 520-5000 Get Directions Write a Review

NPPES record last updated: June 23, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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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

NPI1568101145

Entity TypeIndividualMale

Primary Taxonomy2084N0400X

Provider Legal NameWILLY TREJO GANCredential: MD

Location Address1959 NE PACIFIC STSeattle, WA 98195-0001

Mailing AddressPo Box 50095Seattle, WA 98145-5095

Phone(206) 520-5000

Sole ProprietorNo

Medical School CMSOtherGraduated 2022

Enumeration DateJune 1, 2022

Last NPPES UpdateJune 23, 2026

NPPES CertifiedJune 23, 2026

✔ NPI 1568101145 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · NeurologyAllopathic & Osteopathic Physicians

Taxonomy Code2084N0400X

License✔ Licensed in WA · MD.MD.70123807

Definition

A Neurologist specializes in the diagnosis and treatment of diseases or impaired function of the brain, spinal cord, peripheral nerves, muscles, autonomic nervous system, and blood vessels that relate to these structures.

1959 NE PACIFIC ST, Seattle, WA 98195

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Willy Trejo Gan Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3476027871

PECOS Enrollment IDI20260707003520

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

New Patient

$143.76 typical visit price

range $63.67 – $189.37

Typical copayment $35.94 (range $15.91 – $47.34)

Most-billed visit code 99204

Established Patient

$111.00 typical visit price

range $21.12 – $155.00

Typical copayment $27.75 (range $5.28 – $38.75)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

LEONIE A NEVILLE PHARMD

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)

1959 NE PACIFIC ST
SEATTLE, WA 98195

King County (206) 598-4874

ALISA BETH KACHIKIS M.D.

Obstetrics & Gynecology (Maternal & Fetal Medicine)

1959 NE PACIFIC ST, 3RD FLOOR SW 350
SEATTLE, WA 98195

King County (206) 598-4070

MS. MARY PATRICIA DODGE MS, OTR/L

Occupational Therapist

1959 NE PACIFIC ST, MAILBOX 356490
SEATTLE, WA 98195

King County (206) 598-4830

RIKA SHIRAKAWA M.D.

Ophthalmology

1959 NE PACIFIC ST, BOX 365485
SEATTLE, WA 98195

King County (206) 558-9616

VEDA TSOI M.D.

Anesthesiology

1959 NE PACIFIC ST
SEATTLE, WA 98195

King County (801) 556-7628

KATHRYN TAMURA PHARM.D.

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)

1959 NE PACIFIC ST, BOX 356015
SEATTLE, WA 98195

King County (206) 598-6060

DR. MARK ROBERT, MICHAEL KILGORE M.D.

Pathology (Anatomic Pathology & Clinical Pathology)

1959 NE PACIFIC ST, BOX 356100
SEATTLE, WA 98195

King County (206) 598-1821

DR. SERKAN MEHMET SAHIN M.D.

Hospitalist

1959 NE PACIFIC ST
SEATTLE, WA 98195

King County (206) 543-6420

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.

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 2 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.