Quick answers
- Which hospitals does Joseph A. Nicholas work at?
- Medicare's official clinician data lists Joseph A. Nicholas at 2 hospitals: Aurora St Lukes Medical Center and West Allis Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Joseph A. Nicholas see patients?
- Medicare's clinician data lists 2 practice locations, including Greenfield, WI and Milwaukee, WI. Call before your visit to confirm the address.
- What is Joseph A. Nicholas's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Joseph A. Nicholas accept Medicare assignment?
- Yes. Medicare's clinician data says Joseph A. Nicholas 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.
- What is the phone number for Joseph A. Nicholas?
- (414) 281-5150, as listed in official Medicare / NPI Registry data.
- What is Joseph A. Nicholas's NPI number?
- 1528094588. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Joseph A. Nicholas works
Medicare's Facility Affiliation Data lists Joseph A. Nicholas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aurora St Lukes Medical CenterMilwaukee, WI · Acute Care Hospital · CCN 520138
- West Allis Memorial HospitalWest Allis, WI · Acute Care Hospital · CCN 520139
Practice locations
Addresses where Joseph A. Nicholas is enrolled with Medicare (CMS data updated 2026-10-02).
- 4448 W Loomis RdGreenfield, WI 53220 (414) 281‑5150
- 6901 W Edgerton AveMilwaukee, WI 53220 (414) 421‑8400
Group practices
Medicare enrollment lists Joseph A. Nicholas as a member of these groups (CMS data updated 2026-10-02).
- Aurora Medical Group, Inc.3,813 clinicians in the group
- Lakeshore Medical Clinic LLC379 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Greenfield
Clinicians with the same Medicare primary specialty in Greenfield, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Iowa, Rj & L Carver College Of Medicine |
| Graduation year | 2003 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1528094588 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians