DR. JOSHUA J WILLIAMS PSY.D.
NPI 1285863613
Psychologist - Clinical in Westlake Village, CA

Q: What is Joshua Williams's NPI number?

The NPI number for Joshua Williams is 1285863613. It was assigned to this individual provider in the NPPES registry on July 7, 2009.

Q: What is Joshua Williams's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Joshua Williams was last updated on January 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since July 07, 2009PECOS EnrolledAccepts Medicare Assignment

31194 LA BAYA DR STE 100, WESTLAKE VILLAGE, CA 91362(805) 242-2429(310) 870-7197 Get Directions Write a Review

NPPES record last updated: January 9, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 9, 2025, Oct 6, 2023, Jun 13, 2016 and 1 more (4 updates tracked since 2016).

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About Dr. Joshua J Williams Psy.d. NPPES

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

DR. JOSHUA J WILLIAMS PSY.D. (NPI 1285863613) is an individual clinical provider in Westlake Village, California, licensed in California (PSY25169) and active in the NPI registry since July 2009. He is enrolled in Medicare PECOS and is a graduate of Other (2011).

NPPES Registry Identity

NPI1285863613

Entity TypeIndividualMale

Primary Taxonomy103TC0700X

Provider Legal NameDR. JOSHUA J WILLIAMSCredential: PSY.D.

Location Address31194 LA BAYA DR STE 100Westlake Village, CA 91362-6420

Mailing Address31194 La Baya Dr Ste 100Westlake Village, CA 91362-6420 · (805) 242-2429 · Fax (310) 870-7197

Phone(805) 242-2429

Fax(310) 870-7197

Sole ProprietorNo

Medical School CMSOtherGraduated 2011

Enumeration DateJuly 7, 2009

Last NPPES UpdateJanuary 9, 20254 updates tracked since enumeration

NPPES CertifiedJanuary 9, 2025

✔ NPI 1285863613 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 · PSY25169

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.

31194 LA BAYA DR STE 100, Westlake Village, CA 91362

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Joshua J Williams Psy.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID8820248271

PECOS Enrollment IDI20121022000421

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.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Psychiatric services complicated by communication factor 90785

Psychiatric services complicated by communication factors involve mental health care for individuals who have challenges with communication. This can include language barriers, speech disorders, or cognitive impairments. The process involves tailored strategies to ensure effective communication and appropriate mental health care.

63 services49 patients

Psychotherapy, 30 minutes 90832

Psychotherapy is a therapeutic interaction or treatment between a trained professional and a patient. In a 30-minute session, the therapist helps you explore feelings, thoughts, and behaviors to better understand yourself and manage life's challenges.

61 services61 patients

Psychiatric diagnostic evaluation 90791

A psychiatric diagnostic evaluation is a thorough assessment used to identify any mental health conditions you may have. It involves a detailed discussion about your symptoms, thoughts, feelings and behavior patterns. Your medical history and family's mental health history are also considered.

25 services25 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 91362 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

$185.36 typical visit price

range $62.32 – $185.36

Typical copayment $46.34 (range $15.58 – $46.34)

Most-billed visit code 99205

Established Patient

$108.74 typical visit price

range $20.68 – $151.85

Typical copayment $27.18 (range $5.17 – $37.96)

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.

Other Providers at the Same Location NPPES 7

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

ANDREA R.O. CLARK PH.D

Psychologist (Clinical)