Madeline Masterson, MD
Madeline Masterson, MD is a provider specialising in Student in an Organized Health Care Education/Training Program in Wauwatosa, WI, registered under NPI 1003665399.
Getting there
Here is what surrounds this office in Wauwatosa, based on OpenStreetMap data collected Oct 13, 2026. Parking is available about 0.29 mi away at Parking 1. The nearest transit stop is 751 ft away, served by Watertown Plank & 87th Street.
Getting here and what is nearby
Transit Watertown Plank & 8900 Block 631 ft ~3 min
Transit Watertown Plank & 8948 West 716 ft ~3 min
Transit Watertown Plank & 87th Street 751 ft ~3 min
Parking Parking 6 0.23 mi ~5 min
900 North 87th Street, Wauwatosa 53213
Parking Specialty Clinics Parking - Orange 0.24 mi ~5 min
8700 Doyne Avenue, Wauwatosa 53226
Parking Parking 1 0.29 mi ~6 min
850 North 92nd Street, Wauwatosa 53226
Hotel Kathy's House 0.37 mi ~8 min
Hotel Residence Inn Milwaukee West 0.48 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Student in an Organized Health Care Education/Training Program covers
An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care. NUCC Health Care Provider Taxonomy, code 390200000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003665399 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 17, 2024 |
| Last updated | May 8, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
8701 WATERTOWN PLANK RD Wauwatosa, WI 53226 (414) 955-4575 Fax (414) 955-0156 |
| Other names |
Madeline Ebert Former Legal Business Name |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 6 | 6 | 5 | 3 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 6 | 1 | 3 | 9 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.