MACKENZIE MASON FNP
NPI 1306578109
Nurse Practitioner in Milwaukee, WI
About Mackenzie Mason Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MACKENZIE MASON FNP (NPI 1306578109) is an individual nurse practitioner in Milwaukee, Wisconsin, licensed in Wisconsin (13223-33) and active in the NPI registry since June 2022. She is enrolled in Medicare PECOS, is affiliated with Ascension Columbia St Mary's Hospital Milwaukee, and is a graduate of Other (2022).
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
Mackenzie Mason Fnp 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
3Medicare enrollment records show Mackenzie Mason reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 clinicians in this Medicare group
Milwaukee, WI 53211
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Columbia St Marys Hospital Milwaukee Inc
- 856 clinicians in this Medicare group
Menomonee Falls, WI 53051
- Reassigned Medicare billing, Wisconsin enrollment
- 2,294 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.
Ascension Columbia St Mary's Hospital Milwaukee
Acute Care Hospitals · Milwaukee, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53226 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.
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
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 Mackenzie Mason's NPI number?
The NPI number for Mackenzie Mason is 1306578109. It was assigned to this individual provider in the NPPES registry on June 29, 2022.
Where is Mackenzie Mason located?
Mackenzie Mason practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 805-6000.
What is Mackenzie Mason's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Mackenzie Mason enrolled in Medicare?
Yes. Mackenzie Mason 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 Mackenzie Mason's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mackenzie Mason reassigns Medicare benefits to 3 organizations: The Medical College Of Wisconsin, Inc. (Milwaukee, WI), Columbia St. Mary's Hospital Milwaukee Inc (Milwaukee, WI) and Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (Menomonee Falls, 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 Mackenzie Mason's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mackenzie Mason accept?
Health plans from Anthem Blue Cross and Blue Shield and Network Health list Mackenzie Mason 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 Mackenzie Mason affiliated with any hospitals?
According to CMS data, Mackenzie Mason is affiliated with Ascension Columbia St Mary's Hospital Milwaukee.
When was this NPI record last updated?
The NPPES record for Mackenzie Mason was last updated on October 12, 2022. 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.
# Mackenzie Mason, FNP · NPI 1306578109
Nurse Practitioner physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since June 29, 2022.
## Identity
- **NPI:** 1306578109 (Entity type: Individual)
- **Enumerated:** June 29, 2022
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** 13223-33 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9200 W WISCONSIN AVE, Milwaukee, WI 53226-3522
- **Phone:** (414) 805-6000 · **Fax:** (414) 805-6280
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI); Columbia St. Mary's Hospital Milwaukee Inc (NPI 1225071491, Milwaukee, WI); Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (NPI 1568787448, Menomonee Falls, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** October 12, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1306578109) · Data from the CMS NPPES public registry.