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Dr. Paul Youn

Radiation Oncology

Paul Youn, MD is a board certified radiation oncologist. He specializes in treatment of cancers in prostate, breast, lung, head and neck, gastrointestinal (GI) system, gynecological (GYN) system, skin, and lymphoma.

He is experienced with multiple radiotherapy techniques, including stereotactic radiosurgery (SRS), stereotactic ablative body radiotherapy (SABR), volumetric modulated arc therapy (VMAT), intensity modulated radiation therapy (IMRT), and prostate and gynecologic brachytherapy.

He completed undergraduate studies at Cornell University, graduating cum laude with B.S. in Biological and Environmental Engineering.

He earned his medical degree with distinction in research at University of Rochester School of Medicine and Dentistry. He then went onto residency training in radiation oncology at University of Rochester Medical Center, where he served as chief resident.

Credentials:  MD
Education & Training
   Residency:    University of Rochester Medical Center
    Medical School:    University of Rochester School of Medicine and Dentistry
    College:    Cornell University


John T Mather Memorial Hospital
Long Island Community Hospital
Peconic Bay Medical Center
St. Charles Hospital

Patient Reviews

  • "Dr. Youn was ideal for what I needed. However, I won’t elaborate as I don’t like that my response has to be done through the monopoly company Google with full public access to my account."
      from Woody 5.0 Stars - (2025-09-17)
  • "Extraordinary care , and very direct answers from Dr Yuan. My experience with the entire staff was excellent Thank you"
      from mark 5.0 Stars - (2025-09-16)
  • "I was very happy to meet with Dr. Youn. He was very open and informative and I would feel confident in proceeding with his care."
      from philip 5.0 Stars - (2025-09-12)
  • "Just wanted to say how nice everyone is there. They can't do enough for you while your going thur this time .Dr Youn and his staff are #1. Thank you for everything"
      from Steve 5.0 Stars - (2025-09-12)
  • "Met Dr. Youn to schedule lung cancer radiation."
      from Julie 5.0 Stars - (2025-09-06)
  • "Dr Youn is a highly knowledgeable doctor. He walks you through your scans so you can truly understand what is going on. He is an important part of my team who is helping me stay healthy."
      from Jennifer 5.0 Stars - (2025-08-08)
  • "All I can say is I'm overly impressed with the care and concern your staff shows. I have never experienced where my appointments have been fast ,all procedures were explained in depth. Making my visits very confortable."
      from Daniel 5.0 Stars - (2025-08-07)
  • "love the staff and Dr. Youn. He listens to your concerns. Staff friendly and place is clean."
      from Dee 5.0 Stars - (2025-07-26)
  • "Filling out the questions, some which were already asked and answered."
      from Joseph 4.0 Stars - (2025-07-17)
  • "Dr. Roy Chen, referred me to Dr. Paul Youn of Riverhead Radiation Oncology this past Monday (7/14/25) for a consultation. Dr Youn saw us right after my visit with Dr Chen, on the same day. That doesn’t happen to often anymore, and we are thankful to have him now on our medical team. He was friendly and knowledgeable; explained the treatment options and answered all our questions. We are fortunate to have NYC&BS right here in Riverhead."
      from Allen 5.0 Stars - (2025-07-15)