Quick answers
- Does Leona R. Mason accept Medicare assignment?
- Yes. Medicare's clinician data says Leona R. Mason accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Leona R. Mason's NPI number?
- 1396070512. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Leona R. Mason works
Medicare's Facility Affiliation Data lists Leona R. Mason at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lac/Olive View-Ucla Medical CenterSylmar, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 050040
Practice locations
Addresses where Leona R. Mason is enrolled with Medicare (CMS data updated October 2, 2026).
- 12021 S Wilmington Ave, Room 1059Los Angeles, CA 90059
- 13300 Van Nuys BlvdPacoima, CA 91331 (818) 896‑1903
- 14445 Olive View DrSylmar, CA 91342
Group practices
Medicare enrollment lists Leona R. Mason as a member of these groups (CMS data updated October 2, 2026).
- County of Los Angeles397 clinicians in the group
- Los Angeles County Department of Public Health40 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Other clinicians in County of Los Angeles
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1396070512 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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