Richard M. Gewanter, MD
Radiation Oncologist
Titles
Associate Attending Radiation Oncologist
Clinical Expertise
Prostate Cancer; Breast Cancer; Lung Cancer; Bladder Cancer; Head & Neck Cancers; Intensity-Modulated Radiation Therapy; High-Dose-Rate Brachytherapy
We post reviews for MSK healthcare providers who have at least 30 patient experience surveys completed. If you do not see reviews for a provider, it may be because they do not yet have enough survey responses, or the provider may not be part of the group of healthcare providers included in the survey.
Only outpatient providers are included in the survey. Healthcare providers who only work in the hospital or in urgent care are not included in the survey. Pathologists or researchers who do not provide direct care to patients do not have reviews.
New Patient Appointments
Scheduling a visit is easy. Click below or call us to get started.
- 646-497-9068 Prostate
- 631-623-4269 All others
Dr. Gewanter accepts the following list of insurance providers. Select your insurance provider to see more details.
Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO PPO, POS, Transplant
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO
Payor Type: Commercial
In Network Coverage Type(s): HMO, PPO
Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO, HMO
Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO PPO, POS
Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO
Payor Type: Commercial
In Network Coverage Type(s): Supplemental
Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO
Payor Type: Commercial
In Network Coverage Type(s): POS, EPO, HMO
Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO, HMO
Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO, HMO
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO, HMO, DSN
Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO
Payor Type: Commercial
In Network Coverage Type(s): PPO
Payor Type: Commercial
In Network Coverage Type(s): HMO, EPO
Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): HMO
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO
Payor Type: Commercial
In Network Coverage Type(s): EPO, HMO, PPO, POS
Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): HMO
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): HMO, PPO
Payor Type: Commercial
In Network Coverage Type(s): PPO EPO
Payor Type: Commercial
In Network Coverage Type(s): HMO
Payor Type: Commercial
In Network Coverage Type(s): PPO
Payor Type: Commercial
In Network Coverage Type(s): EPO
Payor Type: Commercial
In Network Coverage Type(s): EPO
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): PPO, HMO
Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government
Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, EPO
Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government
Payor Type: Medicaid/Managed Medicaid
In Network Coverage Type(s): State Government
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): Federal Government
Payor Type: Commercial
In Network Coverage Type(s): Supplemental
Payor Type: Commercial
In Network Coverage Type(s): PPO/OAP
Payor Type: Other
In Network Coverage Type(s): PPO, POS, EPO, HMO
Payor Type: Medicare/Medicare Advantage
In Network Coverage Type(s): TBD
Payor Type: Commercial
In Network Coverage Type(s): HMO/EPO
Payor Type: Commercial
In Network Coverage Type(s): PPO, EPO
Payor Type: Commercial
In Network Coverage Type(s): State Government
Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO
Payor Type: Commercial
In Network Coverage Type(s): PPO, HMO
Payor Type: Commercial
In Network Coverage Type(s): PPO, POS
Payor Type: Commercial
In Network Coverage Type(s): PPO, POS, HMO
Contact and Location
- 516-559-1526 Office Phone
- Speaks English
- Memorial Sloan Kettering Nassau Uniondale, NY
- New York City
Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offer many services, including screening, chemotherapy, and medical testing.
See all locationsAbout Me
Education
MD, Albert Einstein College of Medicine
Residencies
Radiation Oncology - New York Presbyterian/Columbia University Medical Center
Board Certifications
Radiation Oncology
I am a radiation oncologist who sees patients at Memorial Sloan Kettering Nassau, on Long Island. I also see patients at Memorial Hospital in Manhattan.
I treat a wide variety of cancer types, including prostate cancer, bladder cancer, lung cancer, and breast cancer. I have been practicing for 14 years.
Read more
I was drawn to a career in radiation oncology while I was in medical school. I was impressed by how radiation oncologists combined biology, technology, and imaging to deliver targeted treatment for people with cancer. At the same time, I felt a calling to this field because of the opportunity to counsel and guide people through one of the most difficult periods in their lives.
As the field of radiation oncology has advanced, I have found it truly gratifying to be able to deliver more effective treatments with fewer side effects. These advances — such as stereotactic radiosurgery and stereotactic body radiation —allow us to greatly reduce treatment times. Patients used to spend eight to nine weeks on a typical radiation course, but with the latest technologies, they can now often complete their treatments in three to five days.
People who come for their first radiation appointment are often fearful, as there can be many unknowns: How will treatment affect quality of life? How will it affect loved ones? They also want to feel confident that they are making the right treatment choices but often feel overwhelmed by the information available on the internet, or from well-meaning friends.
I try to help my patients understand all options. If we as a patient-clinician team decide radiation is the best option, I explain how we will achieve their treatment goals. I make it a priority to develop a bond of trust from the beginning so that my patients can feel confident and reassured.
In addition to my clinical work, I am a member of the prostate cancer research team in MSK’s Department of Radiation Oncology. I have also served as an expert panel member on the American College of Radiology’s Appropriateness Criteria Committee for Lung Cancer.
I make it a priority to develop a bond of trust from the beginning so that my patients can feel confident and reassured.
-Dr. Gewanter
Awards and Honors
- Castle Connolly: America's Top Doctors (2023)
- Castle Connolly Newsday Top Doctors on Long Island (2010-2016)
- UJA-Federation of New York, Long Island South Shore Healthcare Professionals honoree (2016)
Colleagues
Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.
See all External Beam Radiotherapy Service, Regional Care Network doctors
Clinical Trials
Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.
You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.
Search clinical trialsResearch and Publications
Visit PubMed for a full listing of Dr. Gewanter’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.
See all on PubMedPatient Reviews
At MSK, we’re committed to delivering the best care to every patient. We use feedback from our patients to continue to improve our care. We also post patient reviews online to help you make healthcare choices. Learn more about our patient experience reviews.
Disclosures
Doctors and faculty members often work with pharmaceutical, device, biotechnology, and life sciences companies, and other organizations outside of MSK, to find safe and effective cancer treatments, to improve patient care, and to educate the health care community.
MSK requires doctors and faculty members to report (“disclose”) the relationships and financial interests they have with external entities. As a commitment to transparency with our community, we make that information available to the public.
Richard M. Gewanter discloses the following relationships and financial interests:
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Pfizer, Inc.
Ownership / Equity Interests
If you’re a patient at MSK and would like more information about your doctor’s external relationships, please talk with your doctor.
The information published here is for a specific annual disclosure period. There may be differences between information on this and other public sites as a result of different reporting periods and/or the various ways relationships and financial interests are categorized by organizations that publish such data.
This page and data include information for a specific MSK annual disclosure period (January 1, 2021 through disclosure submission in spring 2022). This data reflects interests that may or may not still exist. This data is updated annually.
Learn more about MSK’s COI policies here. For questions regarding MSK’s COI-related policies and procedures, email MSK’s Compliance Office at [email protected].
