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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 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)
  • "Dr Choi was pleasant and quite professional . He was knowledgeable and helpful during our encounter. I appreciated his professionalism and his advice. Dr Nagwa Saleh demonstrated professional and care for her patients. I’ve had several encounters with her and was quite pleased with how she explained my disease and the steps in my course of treatment and what to expect. She definitely cares for her patients and is quite knowledgeable. I’m quite pleased with the care I received and look forward to following up with her."
      from Paulette 5.0 Stars - (2025-02-01)
  • "Dr Choi & staff are very efficient & caring."
      from Monette 5.0 Stars - (2024-12-15)
  • "Went to a consolation with Dr.choi was great at explaining everything to me and cleared my doubts about what treatment was best for me"
      from Estela 4.0 Stars - (2024-11-13)
  • "I have been visiting this clinic for the last five weeks and from the Doctor, Nurse and font desk , all of them are so polite and caring.. really appreciate them"
      from Tsering 5.0 Stars - (2024-09-25)
  • "Doctor Choi is very good. Takes his time explaining everything, . Thank you, Doctor choi"
      from Peter 5.0 Stars - (2024-06-09)