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

DR. HAROLD THOMAS M.D.
NPI 1639173339
Emergency Medicine in Lake Oswego, OR

Active since June 09, 2005
734 CARRERA LN, LAKE OSWEGO, OR 97034(503) 636-9234 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Harold Thomas M.d. NPPES

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

DR. HAROLD THOMAS M.D. (NPI 1639173339) is an individual emergency medicine provider in Lake Oswego, Oregon, licensed in Washington (MDOOO18720) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1639173339
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameDR. HAROLD THOMASCredential: M.D.
Location Address734 CARRERA LNLake Oswego, OR 97034-1668
Mailing Address734 Carrera LnLake Oswego, OR 97034-1668 · (503) 636-9234
Phone(503) 636-9234
Sole ProprietorNo
Enumeration DateJune 9, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1639173339 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in WA · MDOOO18720
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
734 CARRERA LN, Lake Oswego, OR 97034
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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 Harold Thomas's NPI number?

The NPI number for Harold Thomas is 1639173339. It was assigned to this individual provider in the NPPES registry on June 9, 2005.

Where is Harold Thomas located?

Harold Thomas practices at 734 Carrera Ln, Lake Oswego, OR 97034. The listed phone number is (503) 636-9234.

What is Harold Thomas's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

When was this NPI record last updated?

The NPPES record for Harold Thomas 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 37 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.