Quick answers
- Where does Margaret K. Chen see patients?
- Medicare's clinician data lists 2 practice locations, including Escondido, CA and El Cajon, CA. Call before your visit to confirm the address.
- What is Margaret K. Chen's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Margaret K. Chen accept Medicare assignment?
- Yes. Medicare's clinician data says Margaret K. Chen 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 Margaret K. Chen?
- (760) 520-8100, as listed in official Medicare / NPI Registry data.
- What is Margaret K. Chen's NPI number?
- 1659305084. 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 Margaret K. Chen is enrolled with Medicare (CMS data updated 2026-10-02).
- 460 N Elm StEscondido, CA 92025 (760) 520‑8100
- 855 E Madison AveEl Cajon, CA 92020 (619) 440‑2751
Group practices
Medicare enrollment lists Margaret K. Chen as a member of this group (CMS data updated 2026-10-02).
- Neighborhood Healthcare150 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Escondido
Clinicians with the same Medicare primary specialty in Escondido, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Tufts University School Of Medicine |
| Graduation year | 1995 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659305084 |
| 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