Quick answers
- Which hospitals does Stephanie J. Mandelman work at?
- Medicare's official clinician data lists Stephanie J. Mandelman at 3 hospitals: Adventist Health Simi Valley, Los Robles Hospital & Medical Center and UCLA West Valley Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephanie J. Mandelman see patients?
- Medicare's clinician data lists 1 practice location in Westlake Village, CA. Call before your visit to confirm the address.
- What is Stephanie J. Mandelman's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Stephanie J. Mandelman accept Medicare assignment?
- Yes. Medicare's clinician data says Stephanie J. Mandelman 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.
- Does Stephanie J. Mandelman offer telehealth?
- Medicare's clinician data says Stephanie J. Mandelman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Stephanie J. Mandelman?
- (805) 496-0880, as listed in official Medicare / NPI Registry data.
- What is Stephanie J. Mandelman's NPI number?
- 1851315196. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephanie J. Mandelman works
Medicare's Facility Affiliation Data lists Stephanie J. Mandelman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health Simi ValleySimi Valley, CA · Acute Care Hospital · CCN 050236
- Los Robles Hospital & Medical CenterThousand Oaks, CA · Acute Care Hospital · CCN 050549
- UCLA West Valley Medical CenterWest Hills, CA · Acute Care Hospital · CCN 050481
Practice locations
Addresses where Stephanie J. Mandelman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1220 La Venta Dr, Suite 100Westlake Village, CA 91361 (805) 496‑0880
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Westlake Village
Clinicians with the same Medicare primary specialty in Westlake Village, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | R Franklin University Of Med & Sci/chicago Medical School |
| Graduation year | 1995 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1851315196 |
| 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