MARIAH DIANE COREY PHD
NPI 1942028386
Psychologist in Seatac, WA

Active since October 02, 2024PECOS Enrolled
4040 S 188TH ST STE 201, SEATAC, WA 98188(206) 277-7200(206) 277-7202 Get Directions Write a Review

NPPES record last updated: July 7, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 7, 2026, Apr 14, 2026, Oct 2, 2024 (3 updates tracked since 2024).

About Mariah Diane Corey Phd NPPES

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

MARIAH DIANE COREY PHD (NPI 1942028386) is an individual psychologist in Seatac, Washington, licensed in Washington (PY61663553) and active in the NPI registry since October 2024. She is enrolled in Medicare PECOS, maintains a secondary practice location in Seattle, and is a graduate of Other (2024).

NPPES Registry Identity

NPI1942028386
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NameMARIAH DIANE COREYCredential: PHD
Location Address4040 S 188TH ST STE 201Seatac, WA 98188-5070
Mailing Address955 Powell Ave SwRenton, WA 98057-2908 · (425) 277-1311 · Fax (425) 277-1566
Fax(206) 277-7202
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateOctober 2, 2024
Last NPPES UpdateJuly 7, 20263 updates tracked since enumeration
NPPES CertifiedJuly 7, 2026
✔ NPI 1942028386 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychologistBehavioral Health & Social Service Providers
Taxonomy Code103T00000X
License✔ Licensed in WA · PY61663553
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.
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License PY61663553 (WA)
4040 S 188TH ST STE 201, Seatac, WA 98188

Secondary Practice Location 1

Location 16901 Sand Point Way NE # MS -221Seattle, WA 98115-7869 · Phone (206) 987-2164

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mariah Diane Corey Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1153891627
PECOS Enrollment IDI20260526001787
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.

Medicare Billing Reassignment

Medicare enrollment records show Mariah Corey reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Same address
Federally Qualified Health Center (FQHC)
4040 188TH STREET, SUITE #201
Seatac, WA 98188
  • Reassigned Medicare billing, Washington enrollment
  • 403 clinicians in this Medicare group

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

Family Medicine
4040 S 188TH ST STE 201
SEATAC, WA 98188
Pharmacy (Community/Retail Pharmacy)
4040 S 188TH ST STE 201
SEATAC, WA 98188
Family Medicine
4040 S 188TH ST STE 201
SEATAC, WA 98188
Dentist
4040 S 188TH ST STE 201
SEATAC, WA 98188
Dentist
4040 S 188TH ST STE 201
SEATAC, WA 98188
Family Medicine
4040 S 188TH ST STE 201
SEATAC, WA 98188
Naturopath
4040 S 188TH ST STE 201
SEATAC, WA 98188
Counselor
4040 S 188TH ST STE 201
SEATAC, WA 98188

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 Mariah Corey's NPI number?

The NPI number for Mariah Corey is 1942028386. It was assigned to this individual provider in the NPPES registry on October 2, 2024.

Where is Mariah Corey located?

Mariah Corey practices at 4040 S 188th St Ste 201, Seatac, WA 98188. The listed phone number is (206) 277-7200.

What is Mariah Corey's specialty?

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

Is Mariah Corey enrolled in Medicare?

Yes. Mariah Corey is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mariah Corey's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mariah Corey reassigns Medicare benefits to Healthpoint (Seatac, WA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mariah Corey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mariah Corey accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Mariah Corey 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 Mariah Corey was last updated on July 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.