Quick answers
- Which hospitals does Mallory L. Sievers work at?
- Medicare's official clinician data lists Mallory L. Sievers at 1 hospital: Cedars-Sinai Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mallory L. Sievers see patients?
- Medicare's clinician data lists 3 practice locations, including Los Angeles, CA and Beverly Hills, CA. Call before your visit to confirm the address.
- What is Mallory L. Sievers's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Mallory L. Sievers accept Medicare assignment?
- Yes. Medicare's clinician data says Mallory L. Sievers 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 Mallory L. Sievers?
- (424) 314-5200, as listed in official Medicare / NPI Registry data.
- What is Mallory L. Sievers's NPI number?
- 1902379548. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mallory L. Sievers works
Medicare's Facility Affiliation Data lists Mallory L. Sievers at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050625
Practice locations
Addresses where Mallory L. Sievers is enrolled with Medicare (CMS data updated 2026-10-02).
- 1922 Hillhurst Ave, Suite 200Los Angeles, CA 90027 (424) 314‑5200
- 8501 Wilshire Blvd, Suite 150Beverly Hills, CA 90211 (310) 385‑3334
- 8635 W 3rd St, Suite 465wLos Angeles, CA 90048 (310) 423‑0674
Group practices
Medicare enrollment lists Mallory L. Sievers as a member of this group (CMS data updated 2026-10-02).
- Cedars-Sinai Medical Care Foundation1,692 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902379548 |
| 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