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TRACY A WILLIAMSON
NPI 1285834424
Psychologist - Clinical in Irvine, CA

Active since July 24, 2007PECOS Enrolled
300 SPECTRUM DR., IRVINE, CA 92618(949) 201-9147 Get Directions Write a Review

NPPES record last updated: March 17, 2018. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Mar 17, 2018, Nov 14, 2017 (2 updates tracked since 2017).

About Tracy A Williamson NPPES

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

TRACY A WILLIAMSON (NPI 1285834424) is an individual clinical provider in Irvine, California, licensed in California (PSY18060) and active in the NPI registry since July 2007. She is enrolled in Medicare PECOS and maintains a secondary practice location in Irvine.

NPPES Registry Identity

NPI1285834424
Entity TypeIndividualFemale
Primary Taxonomy103TC0700X
Provider Legal NameTRACY A WILLIAMSON
Location Address300 SPECTRUM DR.Irvine, CA 92618
Mailing Address5901 Victory CtFairfield, CA 94533-9747 · (949) 201-9147
Phone(949) 201-9147
Sole ProprietorYes
Enumeration DateJuly 24, 2007
Last NPPES UpdateMarch 17, 20182 updates tracked since enumeration
✔ NPI 1285834424 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code103TC0700X
License✔ Licensed in CA · PSY18060
Definition
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.
300 SPECTRUM DR., Irvine, CA 92618
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Secondary Practice Location 1

Location 14199 Campus Dr, Ste. 200Irvine, CA 92612-4684 · Phone (949) 510-9014

Other Identifiers 1

Other1285834424CA · Npi

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Tracy A Williamson 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 92618 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$187.60 typical visit price
range $62.96 – $187.60
Typical copayment $46.90 (range $15.74 – $46.90)
Most-billed visit code 99205
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Tracy Williamson's NPI number?

The NPI number for Tracy Williamson is 1285834424. It was assigned to this individual provider in the NPPES registry on July 24, 2007.

Where is Tracy Williamson located?

Tracy Williamson practices at 300 Spectrum Dr., Irvine, CA 92618. The listed phone number is (949) 201-9147.

What is Tracy Williamson's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Tracy Williamson enrolled in Medicare?

Yes. Tracy Williamson is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Tracy Williamson was last updated on March 17, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.