Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
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Mr. Gregg Robert Brewer, MS

Individual provider Mental Health Counselor · NPI 1124465620

Mr. Gregg Robert Brewer, MS is a Clinical Social Worker in Oshkosh, Wisconsin. Qualified in 1989, 37 years ago. Practices with Thedacare, Incorporated, a 654-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
37
Licensed in
WI
In the registry since
2013
Specialties on file
3
What do these letters mean?
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

700 N Westhaven Dr
Oshkosh, WI 54904-6947 Not confirmed with CMS for 12 years — call before visiting
Phone: (920) 456-2030
Fax: (920) 456-2025
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 1071-123 (WI)
Mental Health Counselor Taxonomy 101YM0800X · Licence 610-125 (WI)
Marriage & Family Therapist Taxonomy 106H00000X · Licence 87-124 (WI)

Record details

NPI number1124465620
Entity typeIndividual (Type 1)
GenderMale
Credentials MS
Sole proprietorNo
NPI enumeratedMay 24, 2013
Last updated in NPPESMarch 19, 2014

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1989 (37 years in practice)
Group practice Thedacare, Incorporated — 654 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients28
Services billed 49 a service is one billed item, such as a visit, a test or a procedure
Average patient age55

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Thedacare, Incorporated

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 654 clinicians in the practice; 12 are shown here.

Other providers in Oshkosh