Dr. Mariko Ishimori, M.D.

With 20 years of practice, Dr. Mariko Ishimori is an established rheumatology provider, M.D., after earning their medical degree at New York Medical College in 2000. Dr. currently practices across 10 facilities, including Cedars-sinai Medical Center in Los Angeles, California. Their National Provider Identifier (NPI) is 1487606695, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.

CMS Medicare data shows Dr. Mariko Ishimori as a lower-volume rheumatology provider, treating approximately 129 Medicare beneficiaries and delivering 288 services in the most recent reporting year. That panel size indicates a smaller, more selective practice pattern.