DR. BRET BOROWSKI M.D.
NPI 1659354629
Anesthesiology in West Allis, WI
About Dr. Bret Borowski M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BRET BOROWSKI M.D. (NPI 1659354629) is an individual anesthesiology provider in West Allis, Wisconsin, licensed in Wisconsin (31874-020) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS, is affiliated with West Allis Memorial Hospital, and is a graduate of Medical College Of Wisconsin (1989).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
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
Dr. Bret Borowski M.d. 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 Bret Borowski reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
West Allis, WI 53227
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
West Allis Memorial Hospital
Acute Care Hospitals · West Allis, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WEST ALLIS, WI 53227
WEST ALLIS, WI 53227
WEST ALLIS, WI 53227
WEST ALLIS, WI 53227
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 Bret Borowski's NPI number?
The NPI number for Bret Borowski is 1659354629. It was assigned to this individual provider in the NPPES registry on November 23, 2005.
Where is Bret Borowski located?
Bret Borowski practices at 8901 W Lincoln Ave, West Allis, WI 53227. The listed phone number is (414) 328-6000.
What is Bret Borowski's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Bret Borowski enrolled in Medicare?
Yes. Bret Borowski 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 Bret Borowski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Bret Borowski reassigns Medicare benefits to Aurora Medical Group, Inc. (West Allis, 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 Bret Borowski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Bret Borowski accept?
Health plans from CareSource (Common Ground Healthcare) list Bret Borowski 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.
Is Bret Borowski affiliated with any hospitals?
According to CMS data, Bret Borowski is affiliated with West Allis Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Bret Borowski was last updated on November 24, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.