Quick answers
- Which hospitals does Itamar Gnatt work at?
- Medicare's official clinician data lists Itamar Gnatt at 4 hospitals: Aurora Medical Center, Aurora St Lukes Medical Center, Mountainview Hospital and West Allis Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Itamar Gnatt see patients?
- Medicare's clinician data lists 3 practice locations, including Cudahy, WI, Milwaukee, WI and Grafton, WI. Call before your visit to confirm the address.
- What is Itamar Gnatt's specialty?
- Medicare lists Undersea and Hyperbaric Medicine as the primary specialty.
- Does Itamar Gnatt accept Medicare assignment?
- Yes. Medicare's clinician data says Itamar Gnatt 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 Itamar Gnatt?
- (414) 489-4190, as listed in official Medicare / NPI Registry data.
- What is Itamar Gnatt's NPI number?
- 1447781992. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Itamar Gnatt works
Medicare's Facility Affiliation Data lists Itamar Gnatt at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aurora Medical CenterGrafton, WI · Acute Care Hospital · CCN 520207
- Aurora St Lukes Medical CenterMilwaukee, WI · Acute Care Hospital · CCN 520138
- Mountainview HospitalLas Vegas, NV · Acute Care Hospital · CCN 290039
- West Allis Memorial HospitalWest Allis, WI · Acute Care Hospital · CCN 520139
Practice locations
Addresses where Itamar Gnatt is enrolled with Medicare (CMS data updated 2026-10-02).
- 5900 S Lake DrCudahy, WI 53110 (414) 489‑4190
- 945 N 12th StMilwaukee, WI 53233 (414) 219‑7300
- 975 Port Washington Rd, Suite 110Grafton, WI 53024 (262) 329‑8000
Group practices
Medicare enrollment lists Itamar Gnatt 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
Find other Undersea and Hyperbaric Medicine doctors in Wisconsin →
Other hyperbaric medicine doctors in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1447781992 |
| 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