ALEXANDRA ERNST MD, MPH
NPI 1144845900
Orthopaedic Surgery - Foot and Ankle Surgery in Milwaukee, WI
About Alexandra Ernst Md, Mph NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDRA ERNST MD, MPH (NPI 1144845900) is an individual foot and ankle surgery provider in Milwaukee, Wisconsin, licensed in California (A204267) and active in the NPI registry since June 2020. She is enrolled in Medicare PECOS, is affiliated with Renown Regional Medical Center, and is a graduate of Emory University School Of Medicine (2020).
NPPES Registry Identity
Specialties & Licenses 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Alexandra Ernst Md, Mph 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Renown Regional Medical Center
Acute Care Hospitals · Reno, NVOther 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 Alexandra Ernst's NPI number?
The NPI number for Alexandra Ernst is 1144845900. It was assigned to this individual provider in the NPPES registry on June 8, 2020.
Where is Alexandra Ernst located?
Alexandra Ernst practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 805-7400.
What is Alexandra Ernst's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery, specializing in Foot and Ankle Surgery, with taxonomy code 207XX0004X.
Is Alexandra Ernst enrolled in Medicare?
Yes. Alexandra Ernst 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.
Is Alexandra Ernst affiliated with any hospitals?
According to CMS data, Alexandra Ernst is affiliated with Renown Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Alexandra Ernst was last updated on September 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 days 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.
# Alexandra Ernst, MD, MPH · NPI 1144845900
Foot and Ankle Surgery physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since June 8, 2020.
## Identity
- **NPI:** 1144845900 (Entity type: Individual)
- **Enumerated:** June 8, 2020
- **Primary specialty:** Orthopaedic Surgery - Foot and Ankle Surgery · taxonomy 207XX0004X
- **State license:** A204267 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 9200 W WISCONSIN AVE, Milwaukee, WI 53226-3522
- **Phone:** (414) 805-7400
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Emory University School Of Medicine, class of 2020
## Record status
- **NPPES last updated:** September 10, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1144845900) · Data from the CMS NPPES public registry.