Quick answers
- Which hospitals does Mariko Ishimori work at?
- Medicare's official clinician data lists Mariko Ishimori at 1 hospital: Cedars-Sinai Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mariko Ishimori see patients?
- Medicare's clinician data lists 2 practice locations, including Venice, CA and West Hollywood, CA. Call before your visit to confirm the address.
- What is Mariko Ishimori's specialty?
- Medicare lists Rheumatology as the primary specialty.
- Does Mariko Ishimori accept Medicare assignment?
- Yes. Medicare's clinician data says Mariko Ishimori 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.
- Does Mariko Ishimori offer telehealth?
- Medicare's clinician data says Mariko Ishimori offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mariko Ishimori?
- (310) 664-7901, as listed in official Medicare / NPI Registry data.
- What is Mariko Ishimori's NPI number?
- 1487606695. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mariko Ishimori works
Medicare's Facility Affiliation Data lists Mariko Ishimori at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Cedars-Sinai Medical CenterLos Angeles, CA · Acute Care Hospital · CCN 050625
Practice locations
Addresses where Mariko Ishimori is enrolled with Medicare (CMS data updated 2026-10-02).
- 604 Rose AveVenice, CA 90291 (310) 664‑7901
- 8700 Beverly BlvdWest Hollywood, CA 90048
Group practices
Medicare enrollment lists Mariko Ishimori as a member of these groups (CMS data updated 2026-10-02).
- Cedars-Sinai Medical Center799 clinicians in the group
- Venice Family Clinic102 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1487606695 |
| 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