Quick answers
- Which hospitals does Catherine D. Antonuk work at?
- Medicare's official clinician data lists Catherine D. Antonuk at 3 hospitals: Hollywood Presbyterian Medical Center, Kaiser Foundation Hospital - Baldwin Park and Kaiser Foundation Hospital - Panorama City. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Catherine D. Antonuk see patients?
- Medicare's clinician data lists 1 practice location in Van Nuys, CA. Call before your visit to confirm the address.
- What is Catherine D. Antonuk's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Catherine D. Antonuk accept Medicare assignment?
- Yes. Medicare's clinician data says Catherine D. Antonuk 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 Catherine D. Antonuk?
- (818) 627-3050, as listed in official Medicare / NPI Registry data.
- What is Catherine D. Antonuk's NPI number?
- 1497286256. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Catherine D. Antonuk works
Medicare's Facility Affiliation Data lists Catherine D. Antonuk at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hollywood Presbyterian Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050063
- Kaiser Foundation Hospital - Baldwin ParkBaldwin Park, CA · Acute Care Hospital · CCN 050723
- Kaiser Foundation Hospital - Panorama CityPanorama City, CA · Acute Care Hospital · CCN 050137
Practice locations
Addresses where Catherine D. Antonuk is enrolled with Medicare (CMS data updated 2026-10-02).
- 7515 Van Nuys BlvdVan Nuys, CA 91405 (818) 627‑3050
Group practices
Medicare enrollment lists Catherine D. Antonuk as a member of this group (CMS data updated 2026-10-02).
- County of Los Angeles397 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Van Nuys
Clinicians with the same Medicare primary specialty in Van Nuys, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497286256 |
| 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