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April Vassantachart,

M.D.

Radiation Oncologist

5 (25 Ratings)
Biography photo
Location
City of Hope Sherman Oaks Radiation Oncology
5522 Sepulveda Boulevard
Sherman Oaks, CA 91411
Specialties
Radiation Oncology
Education
Medical school:

Degrees

  • 2018, M.D., Loma Linda University School of Medicine, Loma Linda, California
  • 2014, B.S., Pacific Union College, Angwin, California

Residency

  • 2019-2023, Radiation Oncology, Keck School of Medicine of USC, Los Angeles, California
  • 2018-2019, Residency, Preliminary Internal Medicine, Loma Linda University School of Medicine, Loma Linda, CA

Professional Experience

  • 2023-present, Assistant Clinical Professor, Department of Radiation Oncology, City of Hope, Sherman Oaks, California
Academic Appointments
  • Assistant Clinical Professor, Department of Radiation Oncology
About Me

As a radiation oncologist at City of Hope® Sherman Oaks, April Vassantachart, M.D., treats patients with a wide range of cancer types, considering it an honor to support them and their loved ones throughout their cancer journey. A native of Southern California, Dr. Vassantachart believes that building a meaningful connection with her patients—one grounded in listening, trust and collaboration—is essential to creating care plans tailored to each person’s unique needs. 

Dr. Vassantachart was inspired to pursue radiation oncology because it merges her passion for physics and technology with the practice of medicine, allowing her to deliver precise, non-invasive treatments that improve care and quality of life. She has contributed to journals including the International Journal of Radiation Oncology, Biology and Physics, publishing work on how health literacy affects patients’ understanding of radiation therapy. She also authored a book chapter on managing brain metastases with the use of intracranial stereotactic radiosurgery. 

Outside of her clinical work, Dr. Vassantachart enjoys tending to exotic houseplants, playing pickleball, hiking California’s mountain trails and discovering new restaurants across Los Angeles.

Patient reviews
The patient ratings and comments on this page are obtained from an external Press Ganey® outpatient survey provided to all eligible City of Hope patients within one to two weeks of their treatment occurrence. Raw data from the answers to the survey questions about our physicians are calculated by Press Ganey into a one- to five- star rating. In the spirit of transparency, all patient comments are posted as written by the patient, whether they are positive or negative. We only exclude comments if they are deemed to be slanderous or libelous, contain profanity or vulgar language, or do not relate to the patient's experience with the doctor involved. As a result, the comments are the views and opinions of the patients surveyed and are not endorsed by, and may not necessarily reflect the opinion of, City of Hope.
Feb 4, 2026
5.0
"Very professional, very attentive"
Jan 20, 2026
5.0
"Great discussion...very information."
Nov 26, 2025
5.0
"Good customer service"