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Family Practice

Brian J. Demaster, MD

Works at hospitals in Grafton, WI · Sheboygan, WI · Wisconsin

Summary

Brian J. Demaster, MD (Family Practice) is listed by Medicare at 3 hospitals in Grafton, WI and Sheboygan, WI. NPI 1043325293. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Brian J. Demaster, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Family PracticePrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
34Years since medical school (graduated 1992)
Medical College Of WisconsinMedical school
MaleGender (as listed)
Aurora Medical Group, Inc.Group practice

Quick answers

Which hospitals does Brian J. Demaster work at?
Medicare's official clinician data lists Brian J. Demaster at 3 hospitals: Aurora Medical Center, Aurora Medical Center Sheboygan County and St Nicholas Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Brian J. Demaster see patients?
Medicare's clinician data lists 3 practice locations, including Milwaukee, WI, Sheboygan, WI and Cedar Grove, WI. Call before your visit to confirm the address.
What is Brian J. Demaster's specialty?
Medicare lists Family Practice as the primary specialty.
Does Brian J. Demaster accept Medicare assignment?
Yes. Medicare's clinician data says Brian J. Demaster accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Brian J. Demaster offer telehealth?
Medicare's clinician data says Brian J. Demaster offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Brian J. Demaster?
(414) 219-3056, as listed in official Medicare / NPI Registry data.
What is Brian J. Demaster's NPI number?
1043325293. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Brian J. Demaster works

Medicare's Facility Affiliation Data lists Brian J. Demaster at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Brian J. Demaster is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Brian J. Demaster as a member of this group (CMS data updated 2026-10-02).

  • Aurora Medical Group, Inc.3,813 clinicians in the group

Specialties

Find other Family Practice doctors in Wisconsin →

Other family doctors in Milwaukee

Clinicians with the same Medicare primary specialty in Milwaukee, WI — not a recommendation.

All family doctors in Milwaukee →

Clinician information

CredentialMD
Medical schoolMedical College Of Wisconsin
Graduation year1992
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1043325293
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians