Quick answers
- Which hospitals does John J. McGuinness work at?
- Medicare's official clinician data lists John J. McGuinness at 1 hospital: West Allis Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John J. McGuinness see patients?
- Medicare's clinician data lists 7 practice locations, including Milwaukee, WI, St Francis, WI and Saint Francis, WI. Call before your visit to confirm the address.
- What is John J. McGuinness's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does John J. McGuinness accept Medicare assignment?
- Yes. Medicare's clinician data says John J. McGuinness 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 John J. McGuinness?
- (414) 219-3056, as listed in official Medicare / NPI Registry data.
- What is John J. McGuinness's NPI number?
- 1649247347. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John J. McGuinness works
Medicare's Facility Affiliation Data lists John J. McGuinness at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- West Allis Memorial HospitalWest Allis, WI · Acute Care Hospital · CCN 520139
Practice locations
Addresses where John J. McGuinness is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1020 N 12th StMilwaukee, WI 53233 (414) 219‑3056
- 2000 E Layton AveSt Francis, WI 53235 (414) 649‑3390
- 2000 E Layton AveSaint Francis, WI 53235 (414) 744‑6589
- 8905 W Lincoln AveWest Allis, WI 53227 (414) 328‑8480
- 9200 W Loomis RdFranklin, WI 53132 (414) 529‑9200
Group practices
Medicare enrollment lists John J. McGuinness as a member of these groups (CMS data updated 2026-10-02).
- Aurora Medical Group, Inc.3,813 clinicians in the group
- Aurora Advanced Healthcare, Inc.1,124 clinicians in the group
- Lakeshore Medical Clinic LLC379 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Milwaukee
Clinicians with the same Medicare primary specialty in Milwaukee, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649247347 |
| 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