BRETT A MAY
NPI 1942789904
Nurse Anesthetist, Certified Registered in Rochester, MN
About Brett A May NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BRETT A MAY (NPI 1942789904) is an individual nurse anesthetist, certified registered in Rochester, Minnesota, licensed in Minnesota (2467729) and active in the NPI registry since August 2018. He is enrolled in Medicare PECOS, is affiliated with Mayo Clinic Health System-franciscan Medical Center Inc, and maintains a secondary practice location in La Crosse.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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 A May 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 May reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- Also billed through NPI 1841278637 (Wisconsin)
- 1,003 clinicians in this Medicare group
Viroqua, WI 54665
- Reassigned Medicare billing, Wisconsin enrollment
- 127 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 2
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.
Mayo Clinic Health System-Franciscan Medical Center Inc
Acute Care Hospitals · La Crosse, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55905 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
ROCHESTER, MN 55905
ROCHESTER, MN 55905
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 May's NPI number?
The NPI number for Brett May is 1942789904. It was assigned to this individual provider in the NPPES registry on August 10, 2018.
Where is Brett May located?
Brett May practices at 200 1st St SW, Rochester, MN 55905. The listed phone number is (507) 284-2511.
What is Brett May's specialty?
The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.
Is Brett May enrolled in Medicare?
Yes. Brett May 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 May's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brett May reassigns Medicare benefits to 2 organizations: Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (La Crosse, WI) and Vernon Memorial Healthcare, Inc. (Viroqua, 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 May's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Brett May affiliated with any hospitals?
According to CMS data, Brett May is affiliated with Mayo Clinic Health System-Franciscan Medical Center Inc.
When was this NPI record last updated?
The NPPES record for Brett May was last updated on March 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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 A May · NPI 1942789904
Nurse Anesthetist, Certified Registered physician in Rochester, Minnesota. Individual provider, active in the CMS NPPES registry since August 10, 2018.
## Identity
- **NPI:** 1942789904 (Entity type: Individual)
- **Enumerated:** August 10, 2018
- **Primary specialty:** Nurse Anesthetist, Certified Registered · taxonomy 367500000X
- **State license:** 2467729 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 1ST ST SW, Rochester, MN 55905-0001
- **Phone:** (507) 284-2511
## 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): Mayo Clinic Health System-Southwest Wisconsin Region, Inc. (NPI 1629056049, La Crosse, WI); Vernon Memorial Healthcare, Inc. (NPI 1497750921, Viroqua, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** March 13, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1942789904) · Data from the CMS NPPES public registry.