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- 507 E College St, Iowa City, IA 52240
About Stephen Trefz
Stephen E. Trefz, LISW is a clinical social worker based in Iowa City, IA. According to Medicare claims data, the services billed most often include psychotherapy, 45 minutes. The provider's National Provider Identifier (NPI) is 1326148131.
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
- (319) 338-7884
- Email not available
Practice Locations
507 E COLLEGE ST
Iowa City, IA 52240
Concerns and Conditions Addressed
Within Clinical Social Worker 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 & safety
Abuse & Trauma
Anxiety & Phobias
Behavioral health
Child & adolescent
Child & Adolescent
Crisis & safety
Dissociative Disorders
Eating & body image
Family & Relationships
Grief & Loss
Health & Medical Adjustment
Health & wellness
Identity & sexuality
Intimacy & Sex
Life Changes
Life transitions
Mood & Depression
Mood & emotional health
Neurodevelopmental
Neurodivergence
Perinatal Mental Health
Personality disorders
Relationships & family
Reproductive mental health
Sleep
Substance use
Work & Identity
Procedures & services
Mind-body therapies
Most searched procedures
Addiction & Recovery
Addiction services
Alternative Modalities
Behavioral therapies
- Acceptance and commitment therapy
- Anger management
- Dialectical behavior therapy (DBT)
- Exposure and response prevention (ERP)
- Habit reversal training
- Prolonged exposure therapy
- Sleep counseling
- Social skills training
Behavioral Therapies
Care coordination
Child & adolescent
Cognitive therapies
Creative & Expressive
Crisis services
Evaluations & Assessments
Evaluations & letters
Expressive therapies
Family Therapy
Group interventions
Group Programs
Health Psychology
Individual Therapy
Insight therapies
Integrative therapies
Legal & evaluations
Parenting support
Relationship services
Relationship Therapy
Remote care
Short-term interventions
Specialized interventions
Support services
Trauma Treatments
Procedures Most Often Billed to Medicare
115 services · 11 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychotherapy, 45 minutes | Treatment | 90834 |
115 | As often as other peers in Clinical Social Worker |
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 clinical social workers at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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 — 32 related providers in 4 groups
Other clinical social workers in Iowa City 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1979 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychotherapy, 45 minutes 8
Providers in IA who bill this service to Medicare most often.
Common questions
What is Stephen E. Trefz's specialty?
Stephen E. Trefz is a clinical social worker in Iowa City, IA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Stephen E. Trefz?
Stephen E. Trefz is listed at 507 E College St, Iowa City, IA 52240. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Stephen E. Trefz?
The number on file is (319) 338-7884. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for Stephen E. Trefz?
Stephen E. Trefz's National Provider Identifier is 1326148131. 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
What is Stephen E. Trefz's education?
Stephen E. Trefz attended Other, graduating in 1979. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Stephen E. Trefz have?
Stephen E. Trefz has 47 years experience. Calculated from a graduation year of 1979, reported in the CMS National Downloadable File.
CMS public data
What is Stephen E. Trefz known for?
According to Medicare billing data, Stephen E. Trefz provides treatments such as psychotherapy, 45 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Stephen E. Trefz's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Stephen E. Trefz. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.