Quick answers
- Where does Ellen A. Leng see patients?
- Medicare's clinician data lists 2 practice locations, including Walnut Creek, CA and Antioch, CA. Call before your visit to confirm the address.
- What is Ellen A. Leng's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Ellen A. Leng accept Medicare assignment?
- Yes. Medicare's clinician data says Ellen A. Leng 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 Ellen A. Leng?
- (925) 471-4291, as listed in official Medicare / NPI Registry data.
- What is Ellen A. Leng's NPI number?
- 1902855497. 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 Ellen A. Leng is enrolled with Medicare (CMS data updated 2026-10-02).
- 112 La Casa Via, Suite 135Walnut Creek, CA 94598 (925) 471‑4291
- 3901 Lone Tree WayAntioch, CA 94509 (925) 779‑7200
Group practices
Medicare enrollment lists Ellen A. Leng as a member of these groups (CMS data updated 2026-10-02).
- Cep America - California1,292 clinicians in the group
- Medamerica Physician Solutions PC28 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Walnut Creek
Clinicians with the same Medicare primary specialty in Walnut Creek, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 1990 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1902855497 |
| 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