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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 30 days.

MRS. DIANE DUNCAN COUNSELING ASSOCIATE
NPI 1790605590
Counselor - Mental Health in Portland, OR

Active since July 20, 2026
5441 S MACADAM AVE STE N, PORTLAND, OR 97239(503) 415-1055 Get Directions Write a Review

NPPES record added: July 20, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Mrs. Diane Duncan Counseling Associate NPPES

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

MRS. DIANE DUNCAN COUNSELING ASSOCIATE (NPI 1790605590) is an individual mental health provider in Portland, Oregon, licensed in Oregon (R9788) and active in the NPI registry since July 2026.

NPPES Registry Identity

NPI1790605590
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameMRS. DIANE DUNCANCredential: COUNSELING ASSOCIATE
Location Address5441 S MACADAM AVE STE NPortland, OR 97239-3822
Mailing Address5441 S Macadam Ave Ste NPortland, OR 97239-3822 · (503) 415-1055
Phone(503) 415-1055
Sole ProprietorYes
Enumeration DateJuly 20, 2026
NPPES CertifiedJuly 20, 2026
✔ NPI 1790605590 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in OR · R9788
5441 S MACADAM AVE STE N, Portland, OR 97239
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

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.

APRIL CHAREE JACKSON LCSW
Social Worker (Clinical)
5441 S MACADAM AVE STE N
PORTLAND, OR 97239
Multnomah County (503) 389-6928
RACHEL ELIZABETH SELTZER SONNE MD MPH
Preventive Medicine (Public Health & General Preventive Medicine)
5441 S MACADAM AVE STE N
PORTLAND, OR 97239
Multnomah County (503) 810-0416
JEREMY RUSSELL JOHNSON LPCA
Counselor (Mental Health)
5441 S MACADAM AVE STE N
PORTLAND, OR 97239
Multnomah County (909) 360-9341
BLACK SWAN HEALING LLC
Counselor (Mental Health)
5441 S MACADAM AVE STE N
PORTLAND, OR 97239
Multnomah County (971) 268-7462
CORVALLIS PSYCHIATRY LLC
Psychiatry & Neurology (Psychiatry)
5441 S MACADAM AVE STE N
PORTLAND, OR 97239
Multnomah County (541) 351-7116
FREEDOM RISING COUNSELING LLC
Counselor
5441 S MACADAM AVE STE N, SUITE N
PORTLAND, OR 97239
Multnomah County (541) 714-3282
REBECCA DANILENKO CRC NCC
Counselor (Mental Health)
5441 S MACADAM AVE STE N
PORTLAND, OR 97239
Multnomah County (503) 208-4252
ANDREA LYNN LARSEN MA, LPC
Counselor (Professional)
5441 S MACADAM AVE STE N
PORTLAND, OR 97239
Multnomah County (503) 583-4048

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 Duncan's NPI number?

The NPI number for Diane Duncan is 1790605590. It was assigned to this individual provider in the NPPES registry on July 20, 2026.

Where is Diane Duncan located?

Diane Duncan practices at 5441 S Macadam Ave Ste N, Portland, OR 97239. The listed phone number is (503) 415-1055.

What is Diane Duncan's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

When was this NPI record last updated?

The NPPES record for Diane Duncan was last updated on July 20, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.