Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. JOSEPH W TSEN M.D.
NPI 1770575573
Family Medicine in Seattle, WA

Q: What is Joseph Tsen's NPI number?

The NPI number for Joseph Tsen is 1770575573. It was assigned to this individual provider in the NPPES registry on August 17, 2005.

Q: What is Joseph Tsen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Q: When was this NPI record last updated?

The NPPES record for Joseph Tsen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days 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 August 17, 2005

12510 33RD AVE. N.E., SUITE A, SEATTLE, WA 98125(206) 364-8787(206) 364-8787 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Joseph W Tsen M.d. NPPES

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

DR. JOSEPH W TSEN M.D. (NPI 1770575573) is an individual family medicine provider in Seattle, Washington, licensed in Washington (MD00019279) and active in the NPI registry since August 2005.

NPPES Registry Identity

NPI1770575573

Entity TypeIndividualMale

Primary Taxonomy207Q00000X

Provider Legal NameDR. JOSEPH W TSENCredential: M.D.

Location Address12510 33RD AVE. N.E., SUITE ASeattle, WA 98125-4560

Mailing Address12510 33rd Ave. N.e., Suite ASeattle, WA 98125-4560 · (206) 364-8787 · Fax (206) 364-8787

Phone(206) 364-8787

Fax(206) 364-8787

Sole ProprietorNo

Enumeration DateAugust 17, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1770575573 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207Q00000X

License✔ Licensed in WA · MD00019279

Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

12510 33RD AVE. N.E., Seattle, WA 98125

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Other Identifiers 1

Medicaid1002492WA

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 Joseph Tsen's NPI number?

The NPI number for Joseph Tsen is 1770575573. It was assigned to this individual provider in the NPPES registry on August 17, 2005.

Where is Joseph Tsen located?

Joseph Tsen practices at 12510 33rd Ave. N.E. Suite A, Seattle, WA 98125. The listed phone number is (206) 364-8787.

What is Joseph Tsen's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

When was this NPI record last updated?

The NPPES record for Joseph Tsen was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 days 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.