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COVID-19 Advisory: Help slow down the spread of the virus. If you have symptoms, call before going to a clinic or emergency department. We are restricting visitation to one primary caregiver per patient at all Phoenix Children’s locations. No visitors. For the latest updates on COVID-19 visit the Maricopa County Department of Public Health or the CDC.

Masayo Watanabe, MD

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Areas of Expertise

  • Soft Tissue Tumors Pediatric Oncology Pediatric Hematology Organ Tumors Hemimgiomas Bone Tumors


Phoenix Children's Hospital - Main
1919 E. Thomas Rd., Phoenix, Arizona 85016


Education & Training

Board Certification

Pediatric Hematology/Oncology; General Pediatrics

Medical School / Education

University of Kansas Medical School, Kansas City, KS


(Pediatrics) Children's Mercy Hospital, Kansas City, MO


(Pediatric Hematology/Oncology) Duke University Medical Center, Durham, NC

Professional Affiliations

American Academy of Pediatrics; American Society of Pediatric Hematology/Oncology; Children's Oncology Group; Pediatric Blood and Marrow Transplant Consortium; University of Arizona, Tucson, AZ; American Society of Hematology; American Medical Association; AAP-Hematology/Oncology Subsection; International Society for the Study of Vascular Anomalies

Research & Publications

Bone Tumors; Soft Tissue Tumors; Organ Tumors; Hemimgiomas
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