MRS. THERESA TRENIER M.S., LPC, CTSS
NPI 1851575757
Counselor - Professional in Wauwatosa, WI
About Mrs. Theresa Trenier M.s., Lpc, Ctss NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. THERESA TRENIER M.S., LPC, CTSS (NPI 1851575757) is an individual professional provider in Wauwatosa, Wisconsin and active in the NPI registry since December 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2008).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mrs. Theresa Trenier M.s., Lpc, Ctss is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Theresa Trenier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
West Bend, WI 53095
- Reassigned Medicare billing, Wisconsin enrollment
- 18 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Theresa Trenier's NPI number?
The NPI number for Theresa Trenier is 1851575757. It was assigned to this individual provider in the NPPES registry on December 27, 2007.
Where is Theresa Trenier located?
Theresa Trenier practices at 7251 W North Ave, Wauwatosa, WI 53213. The listed phone number is (414) 258-6000.
What is Theresa Trenier's specialty?
The primary specialty registered for this NPI is Counselor, specializing in Professional, with taxonomy code 101YP2500X.
Is Theresa Trenier enrolled in Medicare?
Yes. Theresa Trenier is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Theresa Trenier's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Theresa Trenier reassigns Medicare benefits to Washington County Wisconsin (West Bend, WI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Theresa Trenier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Theresa Trenier accept?
Health plans from Medica, Network Health and UnitedHealthcare list Theresa Trenier as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Theresa Trenier was last updated on July 7, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mrs. Theresa Trenier, M.S., LPC, CTSS · NPI 1851575757
Professional provider in Wauwatosa, Wisconsin. Individual provider, active in the CMS NPPES registry since December 27, 2007.
## Identity
- **NPI:** 1851575757 (Entity type: Individual)
- **Enumerated:** December 27, 2007
- **Primary specialty:** Counselor - Professional · taxonomy 101YP2500X
- **Sole proprietor:** Yes
## Practice location
- **Address:** 7251 W NORTH AVE, Wauwatosa, WI 53213-1851
- **Phone:** (414) 258-6000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Washington County Wisconsin (NPI 1609801778, West Bend, WI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2008
## Record status
- **NPPES last updated:** July 7, 2011
---
Source: [NPI Profile](https://npiprofile.com/npi/1851575757) · Data from the CMS NPPES public registry.