Quick answers
- Which hospitals does Mariam Mostamand work at?
- Medicare's official clinician data lists Mariam Mostamand at 1 hospital: Grossmont Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mariam Mostamand see patients?
- Medicare's clinician data lists 1 practice location in La Mesa, CA. Call before your visit to confirm the address.
- What is Mariam Mostamand's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mariam Mostamand accept Medicare assignment?
- Yes. Medicare's clinician data says Mariam Mostamand 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 Mariam Mostamand?
- (619) 461-1920, as listed in official Medicare / NPI Registry data.
- What is Mariam Mostamand's NPI number?
- 1942739248. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mariam Mostamand works
Medicare's Facility Affiliation Data lists Mariam Mostamand at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grossmont HospitalLa Mesa, CA · Acute Care Hospital · CCN 050026
Practice locations
Addresses where Mariam Mostamand is enrolled with Medicare (CMS data updated 2026-10-02).
- 5555 Grossmont Ctr DrLa Mesa, CA 91942 (619) 461‑1920
Group practices
Medicare enrollment lists Mariam Mostamand as a member of these groups (CMS data updated 2026-10-02).
- Emergency and Acute Care Medical Corporation422 clinicians in the group
- San Diego Critical Care Medical Group Inc78 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in La Mesa
Clinicians with the same Medicare primary specialty in La Mesa, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942739248 |
| 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