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

DR. DIANE B. HOWIESON PH.D.
NPI 1144222381
Clinical Neuropsychologist in Portland, OR

Q: What is Diane Howieson's NPI number?

The NPI number for Diane Howieson is 1144222381. It was assigned to this individual provider in the NPPES registry on June 1, 2005.

Q: What is Diane Howieson's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

Q: When was this NPI record last updated?

The NPPES record for Diane Howieson 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 26 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 June 01, 2005

1020 SW TAYLOR ST, STE 720, PORTLAND, OR 97205(503) 827-5135(503) 636-8190 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Diane B. Howieson Ph.d. NPPES

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

DR. DIANE B. HOWIESON PH.D. (NPI 1144222381) is an individual clinical neuropsychologist in Portland, Oregon, licensed in Oregon (397) and active in the NPI registry since June 2005.

NPPES Registry Identity

NPI1144222381

Entity TypeIndividualFemale

Primary Taxonomy103G00000X

Provider Legal NameDR. DIANE B. HOWIESONCredential: PH.D.

Location Address1020 SW TAYLOR ST, STE 720Portland, OR 97205-2512

Mailing Address11322 Sw Riverwood RdPortland, OR 97219-8447 · (503) 636-0836

Phone(503) 827-5135

Fax(503) 636-8190

Sole ProprietorNo

Enumeration DateJune 1, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1144222381 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers

Taxonomy Code103G00000X

License✔ Licensed in OR · 397

Definition

A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.

1020 SW TAYLOR ST, Portland, OR 97205

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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.

DANIELLE ELLEN LIEB-FOLEY MA, MFT, ATR

Marriage & Family Therapist

1020 SW TAYLOR ST, SUITE 345
PORTLAND, OR 97205

Multnomah County (503) 704-6101

MYERS-RICHARDS, INC

Counselor (Mental Health)

1020 SW TAYLOR ST, #370
PORTLAND, OR 97205

Multnomah County (503) 222-2420

KATE MCNULTY LCSW

Social Worker (Clinical)

1020 SW TAYLOR ST, SUITE 366
PORTLAND, OR 97205

Multnomah County (503) 295-6265

ALEXANDER FREEMAN

Nurse Practitioner (Psychiatric/Mental Health)

1020 SW TAYLOR ST
PORTLAND, OR 97205

Multnomah County (833) 931-1716

DR. ARTHUR ANDRE SWANSON N.D., L.AC.

Naturopath

1020 SW TAYLOR ST, SUITE 330
PORTLAND, OR 97205

Multnomah County (503) 287-4970

DR. CAROL ARLAND PSY.D.

Psychologist (Clinical)

1020 SW TAYLOR ST, SUITE 670
PORTLAND, OR 97205

Multnomah County (503) 274-7110

ELIZABETH BIRECREE MD

Psychiatry & Neurology (Psychiatry)

1020 SW TAYLOR ST, STE 750
PORTLAND, OR 97205

Multnomah County (503) 288-5261

NATURE CURES CLINIC, LLC

Acupuncturist

1020 SW TAYLOR ST, SUITE 330
PORTLAND, OR 97205

Multnomah County (503) 287-4970

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 Diane Howieson's NPI number?

The NPI number for Diane Howieson is 1144222381. It was assigned to this individual provider in the NPPES registry on June 1, 2005.

Where is Diane Howieson located?

Diane Howieson practices at 1020 SW Taylor St Ste 720, Portland, OR 97205. The listed phone number is (503) 827-5135.

What is Diane Howieson's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

When was this NPI record last updated?

The NPPES record for Diane Howieson 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 26 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.