Quick answers
- Where does Nancy Leon see patients?
- Medicare's clinician data lists 8 practice locations, including Downey, CA, Santa Fe Springs, CA and La Mirada, CA. Call before your visit to confirm the address.
- What is Nancy Leon's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Nancy Leon accept Medicare assignment?
- Yes. Medicare's clinician data says Nancy Leon 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 Nancy Leon?
- (562) 904-4430, as listed in official Medicare / NPI Registry data.
- What is Nancy Leon's NPI number?
- 1437489507. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Nancy Leon is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 12214 Lakewood Blvd, Suite 110Downey, CA 90242 (562) 904‑4430
- 12400 Bloomfield AveSanta Fe Springs, CA 90670 (562) 967‑2820
- 12675 La Mirada Blvd, Suite 201and401La Mirada, CA 90638 (562) 903‑7339
- 1400 S Harbor BlvdLa Habra, CA 90631 (714) 879‑3400
- 2101 N Waterman AveSan Bernardino, CA 92404
Group practices
Medicare enrollment lists Nancy Leon as a member of these groups (CMS data updated 2026-10-02).
- PIH Health Physicians622 clinicians in the group
- Southern California Emergency Medicine45 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Downey
Clinicians with the same Medicare primary specialty in Downey, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2009 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437489507 |
| 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
- 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