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

MR. MARKHAM SCOTT GIBLIN PHD
NPI 1013971167
Psychologist in Corvallis, OR

Active since April 14, 2006PECOS Enrolled
1300 NW HARRISON BLVD, STE # 140, CORVALLIS, OR 97330(541) 738-6516(541) 738-6517 Get Directions Write a Review

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

About Mr. Markham Scott Giblin Phd NPPES

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

MR. MARKHAM SCOTT GIBLIN PHD (NPI 1013971167) is an individual psychologist in Corvallis, Oregon, licensed in Oregon (925) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1013971167
Entity TypeIndividualMale
Primary Taxonomy103T00000X
Provider Legal NameMR. MARKHAM SCOTT GIBLINCredential: PHD
Location Address1300 NW HARRISON BLVD, STE # 140Corvallis, OR 97330-5916
Mailing Address1300 Nw Harrison Blvd, Ste # 140Corvallis, OR 97330-5916 · (541) 738-6516 · Fax (541) 738-6517
Fax(541) 738-6517
Sole ProprietorNo
Enumeration DateApril 14, 2006
Last NPPES UpdateJuly 13, 2026
NPI 1013971167 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License Licensed in OR · 925
Definition
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.
1300 NW HARRISON BLVD, Corvallis, OR 97330

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Mr. Markham Scott Giblin Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

Counselor (Professional)
1300 NW HARRISON BLVD
CORVALLIS, OR 97330
Counselor (Professional)
1300 NW HARRISON BLVD
CORVALLIS, OR 97330
Counselor (Mental Health)
1300 NW HARRISON BLVD
CORVALLIS, OR 97330
Counselor (Professional)
1300 NW HARRISON BLVD
CORVALLIS, OR 97330
Counselor (Professional)
1300 NW HARRISON BLVD
CORVALLIS, OR 97330
Counselor (Professional)
1300 NW HARRISON BLVD
CORVALLIS, OR 97330
Counselor (Mental Health)
1300 NW HARRISON BLVD
CORVALLIS, OR 97330
Counselor (Mental Health)
1300 NW HARRISON BLVD
CORVALLIS, OR 97330

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 Markham Giblin's NPI number?

The NPI number for Markham Giblin is 1013971167. It was assigned to this individual provider in the NPPES registry on April 14, 2006.

Where is Markham Giblin located?

Markham Giblin practices at 1300 NW Harrison Blvd Ste # 140, Corvallis, OR 97330. The listed phone number is (541) 738-6516.

What is Markham Giblin's specialty?

The primary specialty registered for this NPI is Psychologist with taxonomy code 103T00000X.

Is Markham Giblin enrolled in Medicare?

Yes. Markham Giblin is registered in the Medicare PECOS enrollment system.

What insurance does Markham Giblin accept?

Health plans from BridgeSpan Health Company, Moda Health Plan, Inc., PacificSource Health Plans, Providence Health Plan and Regence BlueCross BlueShield of Oregon list Markham Giblin as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Markham Giblin 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 25 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.