BRETT MAAG
NPI 1184020877
Nurse Anesthetist, Certified Registered in Dubuque, IA
About Brett Maag NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRETT MAAG (NPI 1184020877) is an individual nurse anesthetist, certified registered in Dubuque, Iowa, licensed in Iowa (D138951) and active in the NPI registry since November 2014. He is enrolled in Medicare PECOS, is affiliated with Finley Hospital, and is a graduate of Other (2014).
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
Brett Maag 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 Reassignments
2Medicare enrollment records show Brett Maag reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dubuque, IA 52001
- Reassigned Medicare billing, Iowa enrollment
- 19 clinicians in this Medicare group
Kieler, WI 53812
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1831279793 (Wisconsin)
- 175 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Finley Hospital
Acute Care Hospitals · Dubuque, IASouthwest Health Center
Critical Access Hospitals · Platteville, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 52001 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
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 Brett Maag's NPI number?
The NPI number for Brett Maag is 1184020877. It was assigned to this individual provider in the NPPES registry on November 7, 2014.
Where is Brett Maag located?
Brett Maag practices at 1515 Delhi St Suite 300, Dubuque, IA 52001. The listed phone number is (563) 557-5991.
What is Brett Maag's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Brett Maag enrolled in Medicare?
Yes. Brett Maag 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 organizations bill Medicare for Brett Maag's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brett Maag reassigns Medicare benefits to 2 organizations: Grandview Anesthesia PC (Dubuque, IA) and Southwest Health Center, Inc (Kieler, WI). Each 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 Brett Maag's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Brett Maag accept?
Health plans from Group Health Cooperative-SCW and Oscar Insurance Company list Brett Maag 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 Brett Maag affiliated with any hospitals?
According to CMS data, Brett Maag is affiliated with Finley Hospital and Southwest Health Center.
When was this NPI record last updated?
The NPPES record for Brett Maag was last updated on December 31, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Brett Maag · NPI 1184020877
Nurse Anesthetist, Certified Registered physician in Dubuque, Iowa. Individual provider, active in the CMS NPPES registry since November 7, 2014.
## Identity
- **NPI:** 1184020877 (Entity type: Individual)
- **Enumerated:** November 7, 2014
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** D138951 (Iowa)
- **Sole proprietor:** No
## Practice location
- **Address:** 1515 DELHI ST, SUITE 300, Dubuque, IA 52001-6320
- **Phone:** (563) 557-5991 · **Fax:** (563) 589-4078
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Grandview Anesthesia PC (NPI 1407458367, Dubuque, IA); Southwest Health Center, Inc (NPI 1164130266, Kieler, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2014
## Record status
- **NPPES last updated:** December 31, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1184020877) · Data from the CMS NPPES public registry.