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- 700 N Westhaven Dr, Oshkosh, WI 54904
About Gregg Brewer
Gregg R. Brewer, M.S. is a clinical social worker based in Oshkosh, WI. Gregg is also listed as specializing in mental health counselor and marriage & family therapist. According to Medicare claims data, the services billed most often include psychiatric diagnostic evaluation. The provider's National Provider Identifier (NPI) is 1124465620.
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
- (920) 456-2030
- Email not available
Practice Locations
700 N WESTHAVEN DR
Oshkosh, WI 54904
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
23 services · 23 patients · 1 distinct code
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Psychiatric diagnostic evaluation | Treatment | 90791 |
23 | More often than most 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 3
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
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 Oshkosh 8
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 1989 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Psychiatric diagnostic evaluation 8
Providers in WI who bill this service to Medicare most often.
Common questions
What does Gregg R. Brewer specialize in?
Gregg R. Brewer is a clinical social worker in Oshkosh, WI. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where is Gregg R. Brewer located?
Gregg R. Brewer is listed at 700 N Westhaven Dr, Oshkosh, WI 54904. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Gregg R. Brewer's phone number?
The number on file is (920) 456-2030. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Gregg R. Brewer's NPI number?
Gregg R. Brewer's National Provider Identifier is 1124465620. 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 Gregg R. Brewer train?
Gregg R. Brewer attended Other, graduating in 1989. This comes from the CMS National Downloadable File.
CMS public data
How long has Gregg R. Brewer been practicing?
Gregg R. Brewer has 37 years experience. Calculated from a graduation year of 1989, reported in the CMS National Downloadable File.
CMS public data
What does Gregg R. Brewer do most often?
According to Medicare billing data, Gregg R. Brewer provides treatments such as psychiatric diagnostic evaluation. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Gregg R. Brewer confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Gregg R. Brewer. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.