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Department Radiation Oncology
Primary Location Cleveland Clinic Main Campus
Type of Doctor Both Adults and Children & Adolescents
Languages English
Surgeon Yes
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus


Additional Locations

Specialties & Treatments

Treatment & Services

  • Adult Neuro-Oncology
  • Body Radiosurgery
  • Brain Tumor Management
  • Cancer Center
  • External Beam Radiotherapy
  • Gamma Knife Radiosurgery
  • Gamma Knife Treatment
  • Image-Guided Radiation Therapy
  • Intensity Modulated Radiation Therapy
  • Novalis Radiosurgery/Radiotherapy
  • Pediatric Neuro-Oncology
  • Pediatric Radiotherapy
  • Radiation Oncology
  • Radiation Therapy
  • Spine Radiosurgery
  • Stereotactic Body Radiation Therapy (SBRT)
  • Stereotactic Radiosurgery
View all 17 Treatment & Services +

Specialty in Diseases & Conditions

  • Acoustic Neuroma
  • Adult Brain Tumors
  • Anaplastic Astrocytomas
  • Anaplastic Oligodendrogliomas
  • Astrocytoma
  • Benign Brain Tumors
  • Benign Tumors of the Spinal Cord
  • Brain Cancer
  • Brain Lymphoma
  • Brain Metastases
  • Cavernous Sinus Tumors
  • Central Nervous System (CNS) Malignancies
  • Chordomas
  • Clival Chordomas
  • Ependymomas
  • Glioblastoma Multiforme
  • Hemangioblastomas
  • Heterotopic Ossification
  • Malignant Gliomas
  • Malignant Tumors of the Brain
  • Malignant Tumors of the Spinal Cord
  • Meningioma
  • Ocular Lymphomas
  • Ocular Metastasis
  • Oligodendroglioma
  • Ophthalmic Tumors
  • Oral Cancer
  • Pediatric Brain Cancer
  • Pediatric Rare Cancer and Blood Disease Program
  • Pituitary Tumors
  • Primary Central Nervous System Lymphomas
  • Retinal Hemangioma
  • Schwannoma
  • Skull Base Cancer
  • Spinal Cancer
  • Spinal Metastases
  • Spine Tumors
  • Trigeminal Neuralgia
  • Uveal Melanoma
View all 39 Specialties +


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About John Suh, MD

John Suh, MD, is the Chairman of the Department of Radiation Oncology and Associate Director of the Gamma Knife Center at the Brain Tumor and Neuro-Oncology Center at Cleveland Clinic.

Dr. Suh received his Bachelor's and Medical degrees from the University of Miami School of Medicine in Miami, Fla. He completed his internship, residency and fellowship at Cleveland Clinic from 1990 to 1995 and joined the Staff in 1995. He was the Residency Program Director from 1996 to 2002.

Dr. Suh is a written and oral Board Examiner for the American Board of Radiology. He serves as a reviewer for various medical journals and is a member of various medical societies.

His primary research interests are brain tumors, Gamma Knife radiosurgery and innovative radiation modalities. He has participated in numerous in-house, pharmaceutical and cooperative group trials.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Cleveland Clinic
Radiation Oncology
Cleveland, OH USA

Residency - Cleveland Clinic
Radiation Oncology
Cleveland, OH USA

Internship - Cleveland Clinic
Cleveland, OH USA

Medical Education - University of Miami School of Medicine
Miami, FL USA

Undergraduate - University of Miami
Miami, FL USA

Professional Highlights

  • Chairman of the Department of Radiation Oncology
  • Associate Director of Cleveland Clinic's Gamma Knife Radiosurgery Center
  • Former Residency Program Director for Department of Radiation Oncology


  • Radiology - Radiation Oncology

Specialty Interests

Brain tumor, gamma knife

Awards & Honors

  •  America’s Top Doctors for Cancer 2009-2013 (Castle Connolly)

    National Brain Tumor Foundation Clinical Research Award, presented at Society of Neuro-Oncology meeting, 2003
  • ESTRO/ASTRO Traveling Fellowship Award, 1999


  • International Stereotactic Radiosurgery Society (ISRS)
  • American College of Radiology (ACR)
  • American Society of Therapeutic Radiology and Oncology (ASTRO)
  • Society of Chairmen of Academic Radiation Oncology Programs (SCAROP) 
  • Society of Neuro-Oncology (SNO)
Research & Publications

Research & Publications

See publications for John Suh, MD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 3/23/2023, Dr. Suh has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

68 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.9 out of 5
Explains 4.9
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 4.9

15 Patient Comments

Reviewed on Jun 9, 2023

I'm very happy with Dr. SUH.

Reviewed on May 16, 2023

Dr Suh is an amazing man!I have never seen love come from complete strangers like have after being diagnosed with glioblastoma,Every meeting with Dr Suh gives me such confidence in my self!! His eyes are just confident when he speaks . It's like we're gonna together " let me do the heavy lifting "let me guide you!! So so reassuring!! Dr Suh is Definitely my Hero thru this!Thank you Dr Suh and Cleveland Clinic for showing me so much love it has been amazing and completely up lifting.

Reviewed on Apr 13, 2023

Dr Suh explained a misunderstanding l had in my research about cyber-knife surgery. He didn't have time to explain fully, but it was enough for our purposes and helpful. I now understand this detail sufficiently. Though he was extremely busy he was attentive, an excellent listener, respectful and thorough.

Reviewed on Apr 12, 2023

Very thorough, but matched my personality well as not to be too heavy/somber as some doctors have the tendency to be in these situations

Reviewed on Apr 10, 2023

Clearly understand this doctor.

Reviewed on Mar 17, 2023

Dr. Suh is an awesome doctor and I would recommend him to anyone.

Reviewed on Mar 9, 2023

Dr Suh was so very kind and compassionate.

Reviewed on Feb 28, 2023

Love Dr Shuh & his team

Reviewed on Jan 17, 2023

Doctor and support staff were very professional and competent

Reviewed on Jan 9, 2023

The appt. Was set up By Dr. Stevens quickly & I very much appreciated the input of both Drs.

Reviewed on Dec 19, 2022

My care providers were always considerate to my needs and concerns.

Reviewed on Dec 2, 2022

Both Doctors were absolutely great, filling me with a high level of confidence in their competence.

Reviewed on Oct 19, 2022

Dr. Suh is a bright, caring and thorough provider.

Reviewed on Sep 22, 2022

Dr. Suh is so kind. With Brian having Down Syndrome, he spoke directly to him and took his time.

Reviewed on Sep 21, 2022

My first visit with the CCF and it was great!Issue with getting an appointment scheduled initially transferred from Brain Tumor dept, Rad/one and back.Once scheduled it went so good; from kind valet parking; excellent registratar, medical assistant, resident and Dr Suh.

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