Melisa W. Yajima, MD

Practice locations

Addresses where Melisa W. Yajima is enrolled with Medicare (CMS data updated October 2, 2026).

• 275 W Macarthur BlvdOakland, CA 94611 (510) 752‑1000

Group practices

Medicare enrollment lists Melisa W. Yajima as a member of this group (CMS data updated October 2, 2026).

• Permanente Medical Group Inc10,996 clinicians in the group

Specialties

• Hematology/Oncologyprimary
• Internal Medicinealso

Find other Hematology/Oncology doctors in California →

Other hematologist-oncologists in Oakland

Clinicians with the same Medicare primary specialty in Oakland, CA — not a recommendation.

• Steve Yee, MD
• Karina M. D'Souza, MD
• Vishal K. Gupta, MD
• Michael M. Green, MD
• Sarah B. Fleisig, MD
• Prabhu Rajappa, MD
• Eva S. Thomas, MD
• An Uche, MD

All hematologist-oncologists in Oakland →

Other clinicians in Permanente Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Kaoru Itakura, MD
• Terrence R. Horan, MD
• Walter T. Wiswell, MD
• David A. Brethouwer, DO
• Laura Myers, MD
• Mohsin Jawed, MD

Clinician information

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

1. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
2. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
3. Medicare Care Compare — official Medicare tool to look up clinicians