Are you Joshua J. Williams, PsyD? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileAt a glance
- 31194 la Baya Dr Ste 100, Westlake Village, CA 91362
About Dr. Williams
Joshua J. Williams, PsyD is a psychologist — clinical based in Westlake Village, CA. Medicare claims data shows Joshua provided 149 services to 135 patients. The services billed most often include psychiatric services complicated by communication factor, psychotherapy, 30 minutes, and psychiatric diagnostic evaluation. The provider's National Provider Identifier (NPI) is 1285863613.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (805) 242-2429
- Email not available
Practice Locations
31194 LA BAYA DR STE 100
Westlake Village, CA 91362
Concerns and Conditions Addressed
Within Clinical Psychology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Abuse & trauma
Addiction
Anxiety
Behavioral
Child & adolescent
Cognitive
Dissociative
Eating & Body Image
Health & Pain
Identity
Interpersonal
Life transitions
Mood & Emotion
- Anger issues
- Bipolar disorder
- Illness anxiety disorder
- Panic disorder
- Postpartum depression
- Social anxiety disorder
- Specific phobias
Neurodevelopmental
Personal Growth
Personality
Self-harm & crisis
Sensory & neurological
Severe mental illness
Sleep
Stress & Lifestyle
Stress & lifestyle
Work & identity
Procedures & services
Brain & memory
Most searched procedures
Assessments
Behavioral Interventions
- Acceptance and commitment therapy (ACT)
- Anger management
- Dialectical behavior therapy (DBT)
- Exposure and response prevention (ERP)
- Habit reversal training
- Prolonged exposure therapy
Brain-based therapies
Child & adolescent
Crisis & safety
Group Programs
Individual therapy
Interpersonal
Mind-Body
Parenting & Support
Psychodynamic & Integrative
- Internal family systems (IFS)
- Interpersonal psychotherapy
- Psychodynamic psychotherapy
- Schema Therapy
Relationship & family
Skill building
Sleep & Health
Specialized therapy
Stress & Lifestyle
Testing & evaluation
- ADHD Evaluation
- Bariatric Surgery Evaluation
- Emotional Support Animal Evaluation
- Forensic psychological evaluation
- Neuropsychological Testing
- Psychoeducational Testing
Therapy formats
Trauma therapy
Procedures Most Often Billed to Medicare
149 services · 135 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychiatric services complicated by communication factor | Treatment | 90785 |
63 | Less often than most peers in Psychologist — Clinical |
| Psychotherapy, 30 minutes | Treatment | 90832 |
61 | As often as other peers in Psychologist — Clinical |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
25 | As often as other peers in Psychologist — Clinical |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other psychologists at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 5
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 30 related providers in 4 groups
Other psychologists in Westlake Village 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2011 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychiatric services complicated by communication factor 7
Providers in CA who bill this service to Medicare most often.
Common questions
What does Joshua J. Williams specialize in?
Joshua J. Williams is a psychologist in Westlake Village, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychologist — Clinical”.
NPI registry
Where is Joshua J. Williams located?
Joshua J. Williams is listed at 31194 la Baya Dr Ste 100, Westlake Village, CA 91362. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Joshua J. Williams's phone number?
The number on file is (805) 242-2429. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Joshua J. Williams?
Joshua J. Williams's National Provider Identifier is 1285863613. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Joshua J. Williams train?
Joshua J. Williams attended Other, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Joshua J. Williams have?
Joshua J. Williams has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
What does Joshua J. Williams do most often?
According to Medicare billing data, Joshua J. Williams provides treatments such as psychiatric services complicated by communication factor and psychotherapy, 30 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Joshua J. Williams's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Joshua J. Williams. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.