Pictured: Boris Mychalczak

Borys R. Mychalczak, MD

Radiation Oncologist

Areas of Expertise

Conditions I Treat

  • Prostate cancer and conditions
  • Lung cancer
  • Head and neck cancers

My Specialties

  • Brachytherapy
  • Intensity-modulated radiation therapy (IMRT)
  • Image-guided radiation therapy (IGRT)
View all expertise
Dr. Mychalczak's Office Information
Languages: English & Ukrainian
Request an Appointment
Our Care Advisors can answer many of your questions. They will connect you with the best healthcare provider for your needs.
Back to top
English
Share

Get to Know Me

I am a radiation oncologist who cares for people with a variety of cancers at Memorial Sloan Kettering Westchester and Memorial Sloan Kettering Bergen. I am particularly focused on prostate cancer, breast cancer, and gynecologic cancers.

I am an expert in the most sophisticated forms of radiation therapy, including stereotactic body radiosurgery, brachytherapy, intensity-modulated radiation therapy, and image-guided radiation therapy. I see approximately 350 new patients each year.

Read more

Growing up, I loved watching the popular medical drama Marcus Welby, M.D., and thought I would be a general internist just like Dr. Welby was. But when my grandmother was diagnosed with cancer, I decided to go into oncology. In medical school I attended a lecture on radiation oncology that inspired me to narrow my focus. Through radiation oncology, I realized, I could combine my interests in mathematics, physics, and cancer care.

I have been with MSK for more than 30 years. As Chief of Radiation Oncology at MSK Westchester and MSK Bergen, I work hard to integrate the latest and most advanced forms of therapy into our practice. I’m passionate about providing our patients with the most cutting-edge therapies and treatments, closer to home. Together with our exceptional medical physicists and support staff, we collaborate closely with our colleagues across all MSK facilities to ensure that everyone we treat receives the best possible care. 

I am a member of the prostate cancer research team in the Department of Radiation Oncology and participate in various clinical trials at MSK and nationally. I have also served on many committees, including the Oral Board Examination Committee of the American Board of Radiology.

When I first meet patients, I strive to learn what they already know or may have heard about their diagnosis and radiation therapy. I aim to clear up any misconceptions and deliver a clear explanation of their issue and how we’re going to work to resolve it. I know my patients receive an extraordinary amount of information about their condition that can be overwhelming at times, so I encourage them to take treatment one day at a time.

When I’m not working, I love being a dad to my 6-year-old son and 11-year-old daughter. I also love gardening and reading and am particularly interested in financial nonfiction.

What I Do at MSK

I'm a radiation oncologist, which is a cancer doctor with special training in using radiation therapy (RT) to treat cancer.

  • Chief, Radiation Oncology, MSK Westchester & MSK Bergen
Areas of Expertise

Conditions I Treat

  • Prostate cancer and conditions
  • Lung cancer
  • Head and neck cancers
  • Breast cancers and conditions
  • Gynecologic cancers and conditions
  • Colorectal cancer and conditions

My Specialties

  • Brachytherapy
  • Intensity-modulated radiation therapy (IMRT)
  • Image-guided radiation therapy (IGRT)
  • Stereotactic radiosurgery (SRS)
Education & Honors

Education

  • MD, Wayne State University

Residencies

  • Radiation Oncology - Memorial Sloan Kettering Cancer Center

Board Certifications

  • Radiation Oncology

Insurance Information

Understanding your insurance options is an important part of managing your cancer care. We have relationships with many common healthcare providers and plans.

Don't see your carrier or plan? We can help you understand your coverage.

If you don't have health insurance or are worried that your care may not be fully covered, our financial assistance programs may be able to help.

If you have questions about insurance, call us at 646-497-9176.

Make an Appointment

Women talking
New Patients
Scheduling an appointment is easy. Click or call 800-525-2225— we’re available 24 hours a day, 7 days a week
Make an Appointment
Current Patients
Request an appointment by logging in to MSK MyChart or calling your Care Team. If you are not enrolled in MSK MyChart, ask your Care Team to send you an invitation. You can also go to MSK MyChart and select “Sign up now.”

Contact and Location

Dr. Mychalczak sees patients at one location.

Office Phone
Location
West Harrison, NY
Memorial Sloan Kettering Westchester
500 Westchester Avenue West Harrison NY 10604
Get Directions

Looking to see a doctor at a different location? See all MSK locations.

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 Radiation Oncology doctors

See all External Beam Radiotherapy Service, Regional Care Network doctors

See all Brachytherapy Service doctors

Clinical Trials

Smiling doctors in the lab
Find a Clinical Trial for You

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 trials

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Mychalczak’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 PubMed

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.

Borys R. Mychalczak discloses the following relationships and financial interests:

No disclosures meeting criteria for time period


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 a complement to other publicly reported data and 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, 2023 through disclosure submission in spring 2024). 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].


View all disclosures

Related topics: