TIEN VIET NGUYEN MD
NPI 1841626546
Dermatology in Seattle, WA

Q: What is Tien Nguyen's NPI number?

The NPI number for Tien Nguyen is 1841626546. It was assigned to this individual provider in the NPPES registry on September 25, 2013.

Q: What is Tien Nguyen's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Q: When was this NPI record last updated?

The NPPES record for Tien Nguyen was last updated on March 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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 September 25, 2013PECOS Enrolled

1101 MADISON ST STE 301, SEATTLE, WA 98104(206) 505-1300 Get Directions Write a Review

NPPES record last updated: March 27, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Mar 27, 2023, Nov 30, 2020, Sep 28, 2018 and 1 more (4 updates tracked since 2017).

On this page

About Tien Viet Nguyen Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

TIEN VIET NGUYEN MD (NPI 1841626546) is an individual dermatology provider in Seattle, Washington, licensed in Washington (MD60829829) and active in the NPI registry since September 2013. He is enrolled in Medicare PECOS and maintains a secondary practice location in Bellevue.

NPPES Registry Identity

NPI1841626546

Entity TypeIndividualMale

Primary Taxonomy207N00000X

Provider Legal NameTIEN VIET NGUYENCredential: MD

Location Address1101 MADISON ST STE 301Seattle, WA 98104-3599

Mailing Address1101 Madison St Ste 301Seattle, WA 98104-3599 · (206) 505-1300

Phone(206) 505-1300

Sole ProprietorNo

Enumeration DateSeptember 25, 2013

Last NPPES UpdateMarch 27, 20234 updates tracked since enumeration

NPPES CertifiedNovember 30, 2020

✔ NPI 1841626546 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians

Taxonomy Code207N00000X

License✔ Licensed in WA · MD60829829

Definition

A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.

1101 MADISON ST STE 301, Seattle, WA 98104

Open in Google Maps ↗

Secondary Practice Location 1

Location 11810 116th Ave NE Ste 100Bellevue, WA 98004-3043 · Phone (510) 332-4783 · Fax (425) 455-1511

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tien Viet Nguyen Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

Medicare enrollment records show Tien Nguyen reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Clive M Liu MD PLLC

6.6 mi

Dermatology

1810 116TH AVE NE, SUITE 100
Bellevue, WA 98004

Reassigned Medicare billing, Washington enrollment
4 clinicians in this Medicare group

NPI 1598092751 (425) 455-2275

Pacmed Clinics

13 mi

Multi-Specialty

601 S CARR RD, SUITE 100
Renton, WA 98055

Reassigned Medicare billing, Washington enrollment
291 clinicians in this Medicare group

NPI 1720023641 (425) 227-3700

Southern California Permanente Medical Group

919 mi

Health Maintenance Organization

43112 N 15TH ST
Lancaster, CA 93534

Reassigned Medicare billing, California enrollment
13,921 clinicians in this Medicare group

NPI 1982863783 (661) 726-2279

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 98104 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

$97.43 typical visit price

range $63.67 – $189.37

Typical copayment $24.35 (range $15.91 – $47.34)

Most-billed visit code 99203

Established Patient

$78.74 typical visit price

range $21.12 – $155.00

Typical copayment $19.68 (range $5.28 – $38.75)

Most-billed visit code 99213

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.

MS. KIMBERLY ANN MILES MSW LICSW CDP

Social Worker (Clinical)