Provider Profile
Elizabeth W. Lassen, PsyD
Unclaimed ProfileAbout Dr. Lassen
Elizabeth W. Lassen, PsyD is a psychologist — clinical practicing in Louisville, CO. According to Medicare claims data, Elizabeth cared for 58 Medicare patients across 393 services. The services billed most often include psychotherapy, 1 hour and psychiatric diagnostic evaluation.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (303) 661-4100
- Email not available
Practice Locations
80 HEALTH PARK DR STE 270
Louisville, CO 80027
1650 38th St Ste 100E
Boulder, CO 80301
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
- ADHD
- Anxiety
- Depression
- Grief
- OCD
- Relationship issues
- Trauma
Abuse & trauma
- Chronic Illness Coping
Addiction
- Alcohol use disorder
- Drug addiction
- Gambling Addiction
- Porn addiction
- Video Game Addiction
Anxiety
- Agoraphobia
- Childhood Anxiety and Depression
Behavioral
- Hoarding
- Skin picking and hair pulling
Child & adolescent
- Child behavioral problems
- Child Not Talking at School
Cognitive
- Mild cognitive impairment
Dissociative
- Dissociative disorders
Eating & Body Image
- Body image issues
- Eating disorders
Health & Pain
- Chronic pain
Identity
- Gender dysphoria
Interpersonal
- Codependency
- Emotional abuse recovery
Life transitions
- Divorce adjustment
- Identity crisis
Mood & Emotion
- Anger issues
- Bipolar disorder
- Illness anxiety disorder
- Panic disorder
- Postpartum depression
- Social anxiety disorder
- Specific phobias
Neurodevelopmental
- Autism
- Learning disorders
Personal Growth
- Low self-esteem
Personality
- Borderline personality disorder
- Perfectionism
Self-harm & crisis
- Self-harm
Sensory & neurological
- Concussion emotional symptoms
- Hatred of Specific Sounds
Severe mental illness
- Schizophrenia
Sleep
- Chronic Nightmares
- Insomnia
Stress & Lifestyle
- Adjustment disorder
- Burnout
Stress & lifestyle
- Caregiver burnout
Work & identity
- Imposter syndrome
Procedures & services
Most searched procedures
- Cognitive behavioral therapy
- Couples counseling
- EMDR
- Family therapy
- Psychological testing
- Therapy
Assessments
- Autism screening
- Dementia Screening
- Gender Affirming Care Assessment
- Memory testing
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
- Neurofeedback
Child & adolescent
- Parent-child interaction therapy
- Play therapy
Crisis & safety
- Suicide safety planning
Group Programs
- Support groups
Individual therapy
- Behavioral activation
- Compassion-Focused Therapy
- Solution-focused brief therapy
Interpersonal
- Premarital counseling
Mind-Body
- Biofeedback
- Brainspotting
- Hypnotherapy
- Mindfulness-based stress reduction
- Somatic experiencing
Parenting & Support
- Parent coaching
Psychodynamic & Integrative
- Internal family systems (IFS)
- Interpersonal psychotherapy
- Psychodynamic psychotherapy
- Schema Therapy
Relationship & family
- Co-parenting counseling
Skill building
- Executive functioning coaching
Sleep & Health
- Insomnia Treatment (CBT-I)
- Pain Reprocessing Therapy
Specialized therapy
- Ketamine-assisted counseling
Stress & Lifestyle
- Stress Management Counseling
Testing & evaluation
- ADHD Evaluation
- Bariatric Surgery Evaluation
- Emotional Support Animal Evaluation
- Forensic psychological evaluation
- Neuropsychological Testing
- Psychoeducational Testing
Therapy formats
- Group psychotherapy
- Online counseling
- Walk and Talk Therapy
Trauma therapy
- Cognitive processing therapy
Procedures Most Often Billed to Medicare
393 services · 58 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 1 hour | Treatment | 90837 |
371 | More often than most peers in Psychologist — Clinical |
| Psychiatric diagnostic evaluation | Treatment | 90791 |
22 | 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.
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 psychologists in Louisville 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 2011 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy, 1 hour 8
Providers in CO who bill this service to Medicare most often.
Common questions
What does Dr. Lassen specialize in?
Dr. Lassen is a psychologist in Louisville, CO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Psychologist — Clinical”.
NPI registry
Where is Dr. Lassen located?
Dr. Lassen is listed at 80 Health Park Dr Ste 270, Louisville, CO 80027. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Lassen's phone number?
The number on file is (303) 661-4100. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Lassen's NPI number?
Dr. Lassen's National Provider Identifier is 1457684938. 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 Dr. Lassen go to medical school?
Dr. Lassen attended Other, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Lassen been practicing?
Dr. Lassen has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Lassen do most often?
According to Medicare billing data, Dr. Lassen provides treatments such as psychotherapy, 1 hour and psychiatric diagnostic evaluation. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Lassen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lassen. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.