Provider Profile
Tricia L. Duncan-Hassel, PsyD
Unclaimed ProfileAbout Dr. Duncan-Hassel
Tricia L. Duncan-Hassel, PsyD is a clinical psychologist based in Glendora, CA. Tricia is also listed as specializing in psychologist — clinical. According to Medicare claims data, Tricia cared for 39 Medicare patients across 865 services. The services billed most often include psychotherapy, 1 hour. The provider's National Provider Identifier (NPI) is 1104993898.
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
- (626) 600-8601
- Email not available
Practice Locations
410 S GLENDORA AVE STE 130
Glendora, CA 91741
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
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
865 services · 39 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 1 hour | Treatment | 90837 |
865 | More than most peers in Clinical Psychologist |
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 clinical psychologists in Glendora 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2002 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy, 1 hour 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Tricia L. Duncan-Hassel specialize in?
Tricia L. Duncan-Hassel is a clinical psychologist in Glendora, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Tricia L. Duncan-Hassel located?
Tricia L. Duncan-Hassel is listed at 410 S Glendora Ave Ste 130, Glendora, CA 91741. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Tricia L. Duncan-Hassel's phone number?
The number on file is (626) 600-8601. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Tricia L. Duncan-Hassel's NPI number?
Tricia L. Duncan-Hassel's National Provider Identifier is 1104993898. 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 Tricia L. Duncan-Hassel train?
Tricia L. Duncan-Hassel attended Other, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How long has Tricia L. Duncan-Hassel been practicing?
Tricia L. Duncan-Hassel has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What does Tricia L. Duncan-Hassel do most often?
According to Medicare billing data, Tricia L. Duncan-Hassel provides treatments such as psychotherapy, 1 hour. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Tricia L. Duncan-Hassel confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Tricia L. Duncan-Hassel. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.