Quick answers
- Which hospitals does Stephen R. Au work at?
- Medicare's official clinician data lists Stephen R. Au at 3 hospitals: Hoag Memorial Hospital Presbyterian, Hoag Orthopedic Institute and Memorialcare Saddleback Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen R. Au see patients?
- Medicare's clinician data lists 2 practice locations, including Newport Beach, CA and Laguna Hills, CA. Call before your visit to confirm the address.
- What is Stephen R. Au's specialty?
- Medicare lists Anesthesiology as the primary specialty.
- Does Stephen R. Au accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen R. Au 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 Stephen R. Au?
- (949) 645-8600, as listed in official Medicare / NPI Registry data.
- What is Stephen R. Au's NPI number?
- 1396036331. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen R. Au works
Medicare's Facility Affiliation Data lists Stephen R. Au at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Hoag Memorial Hospital PresbyterianNewport Beach, CA · Acute Care Hospital · CCN 050224
- Hoag Orthopedic InstituteIrvine, CA · Acute Care Hospital · CCN 050769
- Memorialcare Saddleback Medical CenterLaguna Hills, CA · Acute Care Hospital · CCN 050603
Practice locations
Addresses where Stephen R. Au is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Hoag DrNewport Beach, CA 92663 (949) 645‑8600
- 24451 Health Ctr DrLaguna Hills, CA 92653 (949) 837‑4500
Group practices
Medicare enrollment lists Stephen R. Au as a member of these groups (CMS data updated 2026-10-02).
- Cep America - Anesthesia PC849 clinicians in the group
- Newport Harbor Anesthesia Consultants Medical Group Inc95 clinicians in the group
Specialties
- Anesthesiologyprimary
Other anesthesiologists in Newport Beach
Clinicians with the same Medicare primary specialty in Newport Beach, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tulane University School Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396036331 |
| 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