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Dr. Walter Choi

Radiation Oncology

Dr. Walter Choi is a board-certified Radiation Oncologist, highly regarded for his expertise in the field of targeted radiotherapy, including stereotactic radiosurgery, stereotactic body radiotherapy, and brachytherapy, with a particular interest in the treatment of cancers of the lung, prostate, breast, gastrointestinal system, central nervous system, as well as tumors of the eye and orbit.

Dr. Choi received his medical degree from SUNY Downstate College of Medicine in Brooklyn. After a medical internship at Long Island Jewish Medical Center, he returned to complete a residency in Radiation Oncology at SUNY Downstate, where he served as Chief Resident. Subsequently, he completed fellowships in stereotactic radiosurgery and brachytherapy at Beth Israel/Roosevelt Hospital and Montefiore Medical Center.

Dr. Choi is a member of several professional organizations, including the American Society for Radiation Oncology, the American Brachytherapy Society, the Korean American Society for Radiation Oncology, the New York Roentgen Society, the Connective Tissue Oncology Society, and the International Association for the Study of Lung Cancer.

Credentials:  MD
Education & Training
   Residency:    SUNY Downstate
 Internships    Long Island Jewish Medical Center
    Medical School:    SUNY Downstate College of Medicine
    Fellowships:    Beth Israel/Roosevelt Hospital, Montefiore Medical Center


Patient Reviews

  • "I am pleased to inform you that he is a great Doctor, with an excellent development and very dedicated to help me, I thank him very much for the way he treated me and explained everything I needed to know. God bless always."
      from Irma 5.0 Stars - (2025-05-22)
  • "I can’t recommend him enough!!! Compassionate and caring!"
      from michelle 5.0 Stars - (2025-05-15)
  • "Dr Choi and all the employees were very patient and caring ..I appreciate their service 🙏"
      from Tsering 5.0 Stars - (2025-05-14)
  • "Great consultation, doing the cutting edge work! Thanks"
      from Jose 5.0 Stars - (2025-04-30)
  • "Great place. Easy to commute to, and parking too. Doctor and staff very courteous. I was informed of what I could expect in the coming weeks. I am very comfortable with Dr. Choi's care and professionalism."
      from Thomas 5.0 Stars - (2025-04-05)
  • "I met Dr. Choi and in the presence with my son Frank . I was examined thoroughly. I was very comfortable with his diagnosis and the treatment/ help he and the facility were going to provide for me and the confidence within my family."
      from Frank 5.0 Stars - (2025-03-26)
  • "Atmosphere was professional. Doctor patiently replied all my queries. All personnel were helpful."
      from Mobinul 5.0 Stars - (2025-03-07)
  • "U guys are the best doctor thank u for everything u are doing for me god bless you"
      from Amylee 5.0 Stars - (2025-03-07)
  • "I would like to thank Dr. Choi and the medical staff for their demonstration of kindness and professionalism on my very first visit. I was treated with the utmost dignity and respect. All of my questions were answered to my satisfaction. I also appreciate the option for having the decision making opportunities regarding treatment for my medical care."
      from Renee 5.0 Stars - (2025-02-26)
  • "(Translated by Google) Thank you very clear information and great professional (Original) Gracias muy clara la información y gran profesional"
      from Juan 4.0 Stars - (2025-02-18)