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PATRICK MATHIASEN MD
NPI 1063342590
Psychiatry & Neurology - Psychiatry in Bellevue, WA

Active since May 19, 2026
10203 NE 29TH PL, BELLEVUE, WA 98004(425) 628-3660 Get Directions Write a Review

NPPES record last updated: May 19, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Patrick Mathiasen Md NPPES

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

PATRICK MATHIASEN MD (NPI 1063342590) is a healthcare organization registered as a psychiatry in Bellevue, Washington and active in the NPI registry since May 2026. The organization lists Patrick Leroy Mathiasen, Owner, as its authorized official.

NPPES Registry Identity

NPI1063342590
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NamePATRICK MATHIASEN MD
Location Address10203 NE 29TH PLBellevue, WA 98004-1935
Mailing Address10203 Ne 29th PlBellevue, WA 98004-1935 · (425) 628-3660
Phone(425) 628-3660
Organization SubpartNo
Authorized OfficialPatrick Leroy MathiasenOwner · (425) 628-3660
Enumeration DateMay 19, 2026
NPPES CertifiedMay 19, 2026
✔ NPI 1063342590 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
10203 NE 29TH PL, Bellevue, WA 98004
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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 Patrick Mathiasen MD's NPI number?

The NPI number for Patrick Mathiasen MD is 1063342590. It was assigned to this organization in the NPPES registry on May 19, 2026.

Where is Patrick Mathiasen MD located?

Patrick Mathiasen MD is located at 10203 NE 29th Pl, Bellevue, WA 98004. The listed phone number is (425) 628-3660.

What is Patrick Mathiasen MD's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for Patrick Mathiasen MD was last updated on May 19, 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.