PEI-YING LO
NPI 1497364392
Psychologist in Shoreline, WA

Active since July 27, 2020PECOS Enrolled
1201 N 175TH ST, SHORELINE, WA 98133(425) 339-5453 Get Directions Write a Review

NPPES record last updated: January 21, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 21, 2026, Jul 27, 2020 (2 updates tracked since 2020).

About Pei-ying Lo NPPES

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

PEI-YING LO (NPI 1497364392) is an individual psychologist in Shoreline, Washington, licensed in Washington (PY61691411) and active in the NPI registry since July 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1497364392
Entity TypeIndividualFemale
Primary Taxonomy103T00000X
Provider Legal NamePEI-YING LO
Location Address1201 N 175TH STShoreline, WA 98133-5064
Mailing AddressPo Box 5127Everett, WA 98206-5127 · (206) 860-5414
Sole ProprietorNo
Enumeration DateJuly 27, 2020
Last NPPES UpdateJanuary 21, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 21, 2026
✔ NPI 1497364392 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 WA · PY61691411
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.
1201 N 175TH ST, Shoreline, WA 98133

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)

Pei-ying Lo 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.

Medicare Billing Reassignments

2

Medicare enrollment records show Pei-ying Lo reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Audiologist
1145 BROADWAY
Seattle, WA 98122
  • Reassigned Medicare billing, Washington enrollment
  • 911 clinicians in this Medicare group
Multi-Specialty
3901 HOYT AVE
Everett, WA 98201
  • Reassigned Medicare billing, Washington enrollment
  • 1,285 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.

Preventive Medicine (Occupational Medicine)
1201 N 175TH ST
SHORELINE, WA 98133
Pediatrics
1201 N 175TH ST
SHORELINE, WA 98133
Internal Medicine
1201 N 175TH ST
SHORELINE, WA 98133
Physician Assistant
1201 N 175TH ST
SHORELINE, WA 98133
Family Medicine
1201 N 175TH ST
SHORELINE, WA 98133
Nurse Practitioner
1201 N 175TH ST
SHORELINE, WA 98133
Psychologist (Clinical)
1201 N 175TH ST
SHORELINE, WA 98133
Podiatrist (Foot & Ankle Surgery)
1201 N 175TH ST
SHORELINE, WA 98133

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 Pei-ying Lo's NPI number?

The NPI number for Pei-ying Lo is 1497364392. It was assigned to this individual provider in the NPPES registry on July 27, 2020.

Where is Pei-ying Lo located?

Pei-ying Lo practices at 1201 N 175th St, Shoreline, WA 98133. The listed phone number is (425) 339-5453.

What is Pei-ying Lo's specialty?

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

Is Pei-ying Lo enrolled in Medicare?

Yes. Pei-ying Lo is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Pei-ying Lo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Pei-ying Lo reassigns Medicare benefits to 2 organizations: The Polyclinic PLLC (Seattle, WA) and Optum Care Washington PLLC (Everett, WA). Each 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 Pei-ying Lo's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Pei-ying Lo accept?

Health plans from Premera Blue Cross Blue Shield of Alaska list Pei-ying Lo 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 Pei-ying Lo was last updated on January 21, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.