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CLAYTON DANE MATHEWSON PH.D.
NPI 1801126065
Counselor in Portland, OR

Active since January 10, 2010
1215 SW 18TH AVE, PORTLAND, OR 97205(503) 224-1223 Get Directions Write a Review

NPPES record last updated: January 10, 2010. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Clayton Dane Mathewson Ph.d. NPPES

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

CLAYTON DANE MATHEWSON PH.D. (NPI 1801126065) is an individual counselor in Portland, Oregon and active in the NPI registry since January 2010.

NPPES Registry Identity

NPI1801126065
Entity TypeIndividualMale
Primary Taxonomy101Y00000X
Provider Legal NameCLAYTON DANE MATHEWSONCredential: PH.D.
Location Address1215 SW 18TH AVEPortland, OR 97205-1711
Mailing Address1215 Sw 18th AvePortland, OR 97205-1711 · (503) 224-1223
Phone(503) 224-1223
Sole ProprietorYes
Enumeration DateJanuary 10, 2010
✔ NPI 1801126065 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselorBehavioral Health & Social Service Providers
Taxonomy Code101Y00000X
Definition
A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.
1215 SW 18TH AVE, Portland, OR 97205
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Other Providers at the Same Location NPPES 17

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

LEAH SOBIECK
Counselor (Mental Health)
1215 SW 18TH AVE
PORTLAND, OR 97205
Multnomah County (503) 893-9532
ASHLEY SHARAYAH HINKLE LMT
Massage Therapist
1215 SW 18TH AVE
PORTLAND, OR 97205
Multnomah County (804) 402-4643
ROSEMARY ELLIOTT
Counselor
1215 SW 18TH AVE
PORTLAND, OR 97205
Multnomah County (971) 238-4789
MUIREALL BROWN LMT
Massage Therapist
1215 SW 18TH AVE
PORTLAND, OR 97205
Multnomah County (503) 447-6593
BYRD WILLIAM MCDONALD
Counselor (Mental Health)
1215 SW 18TH AVE
PORTLAND, OR 97205
Multnomah County (503) 893-9532
MARTIN BRIAN FISHER JR. PSYD
Psychologist (Clinical)
1215 SW 18TH AVE, SUITE 4
PORTLAND, OR 97205
Multnomah County (503) 318-3236
KELLAN BECKHAM
Social Worker (Clinical)
1215 SW 18TH AVE
PORTLAND, OR 97205
Multnomah County (503) 841-6401
NAVYA JANAPATI
Counselor (Mental Health)
1215 SW 18TH AVE
PORTLAND, OR 97205
Multnomah County (503) 893-9532

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 Clayton Mathewson's NPI number?

The NPI number for Clayton Mathewson is 1801126065. It was assigned to this individual provider in the NPPES registry on January 10, 2010.

Where is Clayton Mathewson located?

Clayton Mathewson practices at 1215 SW 18th Ave, Portland, OR 97205. The listed phone number is (503) 224-1223.

What is Clayton Mathewson's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

When was this NPI record last updated?

The NPPES record for Clayton Mathewson was last updated on January 10, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 years 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.