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Edit this profileAt a glance
- 4477 W 118Th St, 400, Hawthorne, CA 90250
About Thomas Willett
Thomas G. Willett is a healthcare provider in Hawthorne, CA specializing in psychiatry. Thomas trained at University of California, Geffen School of Medicine, graduating in 1967. Medicare claims data shows Thomas provided 1,454 services to 306 patients. The services billed most often include psychotherapy with evaluation and management visit, 30 minutes, established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more, and office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional. This provider record is associated with NPI 1740229483.
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
- (310) 978-1214
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
4477 W 118TH ST 400
Hawthorne, CA 90250
Conditions Commonly Evaluated or Treated
Within Psychiatry 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
Cognitive and adjustment
Eating, sleep, and somatic
- Binge-eating disorder
- Bulimia nervosa
- Illness anxiety disorder
Geriatric care
- Agitation in Dementia
Mental Health
- Bipolar Depression
Neurodevelopmental and behavioral
- Intellectual disability
- Autism
- Oppositional defiant disorder
Most searched conditions
Anxiety, trauma, and obsessive-compulsive
Mood disorders
Psychotic disorders
Substance-related and addictive
Addiction & Substance Use
Eating Disorders
Mood & Depression
Personality and dissociative
- Borderline personality disorder
- Dissociative disorders
- Narcissistic personality disorder
Sleep & Wakefulness
Procedures & services
Advanced treatment
- Esketamine treatment
Assessment
- Cognitive and memory screening
- Suicide and safety risk assessment
Most searched procedures
- Anxiety and depression treatment
- Cognitive behavioral therapy
- Medication management
- Psychiatric evaluation
- Telepsychiatry
Addiction care
Addiction Medicine
- Alcohol Detox and Withdrawal Management
- Dual Diagnosis Treatment
- Suboxone Treatment and MAT
Assessments
- Adult ADHD Testing
- Autism testing
- Cognitive Assessment
Brain stimulation
- Neurofeedback
- Vagus Nerve Stimulation
Consultations
- Psychiatric Second Opinion
Diagnostics
- Neuropsychological Testing
- Psychiatric Genetic Testing
Inpatient care
- Inpatient Psychiatric Care
Interventional psychiatry
- Spravato Treatment
Psychotherapy
Sleep Medicine
Specialized care
- Light Therapy
Therapy
Therapy and care
Procedures Most Often Billed to Medicare
1,454 services · 306 patients · 5 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy with evaluation and management visit, 30 minutes | Treatment | 90833 |
688 | More than most peers in Psychiatry |
| Psychotherapy, 45 minutes | Treatment | 90834 |
85 | As often as other peers in Psychiatry |
| Psychiatric diagnostic evaluation with medical services | Treatment | 90792 |
14 | Less often than most peers in Psychiatry |
| Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more | Office visit | 99212 |
456 | More than most peers in Psychiatry |
| Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional | Office visit | 99211 |
211 | More often than most peers in Psychiatry |
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.
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.
Other psychiatrists in Hawthorne 5
Same specialty, same city.
Trained at University of California, Geffen School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 14 related providers in 2 groups
Class of 1967 at University of California, Geffen School of Medicine 6
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy with evaluation and management visit, 30 minutes 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Thomas G. Willett specialize in?
Thomas G. Willett is a psychiatrist in Hawthorne, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychiatry”.
NPI registry
Where is Thomas G. Willett located?
Thomas G. Willett is listed at 4477 W 118Th St 400, Hawthorne, CA 90250. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Thomas G. Willett's phone number?
The number on file is (310) 978-1214. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Thomas G. Willett?
Thomas G. Willett's National Provider Identifier is 1740229483. 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 Thomas G. Willett train?
Thomas G. Willett attended University of California, Geffen School of Medicine, graduating in 1967. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Thomas G. Willett have?
Thomas G. Willett has 59 years experience. Calculated from a graduation year of 1967, reported in the CMS National Downloadable File.
CMS public data
What does Thomas G. Willett do most often?
According to Medicare billing data, Thomas G. Willett provides treatments such as psychotherapy with evaluation and management visit, 30 minutes and psychotherapy, 45 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Thomas G. Willett's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Thomas G. Willett. If this is you, claiming it is free.
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