Matthew McMillan, MD
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.
Areas of Expertise
Conditions I Treat
- Anal cancer
- Bile duct cancer (cholangiocarcinoma)
- Bladder cancer
My Specialties
- Clinical trials
- Image-guided radiation therapy (IGRT)
- Intensity-modulated radiation therapy (IMRT)
Get to Know Me
I am a radiation oncologist at Memorial Sloan Kettering Cancer Center (MSK). I care for people with lung cancer and gastrointestinal (GI) cancers, as well as patients with metastatic disease and bladder cancer.
I see patients at MSK Commack on Long Island and at the New York Proton Center in New York City. My goal is to match each person with the safest, most effective radiation therapy plan—whether that’s proton therapy, stereotactic body radiation therapy (SBRT), or another modern technique.
Many people I meet ask about their options and if radiation therapy will affect their breathing or digestion. They also want to know what side effects they should expect and how they can prevent them.
I take the time to answer these questions in clear, simple language. I also work closely with surgeons, medical oncologists, and other specialists so every patient gets a coordinated plan that fits their life and goals.
My clinical expertise includes delivering highly focused radiation to tumors that sit close to sensitive organs such as ultra-central lung tumors. These are types of lung tumors that are very close to important structures in the chest, which are at higher risk of side effects and damage from radiation therapy. For these types of tumors, I consider using proton therapy which can better spare healthy tissue. I rely on advanced imaging and careful planning to keep treatments precise and gentle.
Research is an important part of my work. I co-lead an international group of more than 30 centers working to make SBRT for ultra-central lung tumors safer and more effective. I also help design clinical trials that combine radiation with immunotherapy and analyze blood and tumor samples to understand how treatment changes the immune system.
Immunotherapy is a treatment that helps the body’s own immune system attack cancer. I study immune checkpoint blockade, which is a type of immunotherapy that lifts brakes on immune cells. This helps them better recognize and destroy tumors. I work closely with my medical oncology colleagues to improve how radiation and immunotherapy can be combined in both clinical care and trials.
Our goal is to personalize radiation so patients gain the most benefit with the fewest side effects — and to harness the immune system so radiation can be even more effective.
I completed my radiation oncology residency at MSK and served as Chief Resident, before joining as faculty. During medical school at the University of Michigan, I received a national research fellowship from Alpha Omega Alpha and graduated with Distinction in Research.
When I’m not working, I enjoy going to the park with my family and watching my favorite sports teams with friends and family.
I'm a radiation oncologist, which is a cancer doctor with special training in using radiation therapy (RT) to treat cancer.
- Assistant Attending Physician
Conditions I Treat
- Anal cancer
- Bile duct cancer (cholangiocarcinoma)
- Bladder cancer
- Bone metastases
- Esophageal cancers and conditions
- Gallbladder cancer
- Liver cancer and conditions
- Liver metastases
- Lung cancer
- Metastatic cancers
- Pancreatic cancer
- Rectal cancer
- Stomach (gastric) cancer
My Specialties
- Clinical trials
- Image-guided radiation therapy (IGRT)
- Intensity-modulated radiation therapy (IMRT)
- MSK Precise
- Proton therapy
- Stereotactic body radiation therapy (SBRT)
- Stereotactic radiosurgery (SRS)
- Volumetric modulated arc therapy (VMAT)
Education
- MD, University of Michigan Medical School
Residencies
- Transitional Year Internship, Memorial Sloan Kettering Cancer Center
- Radiation Oncology, Memorial Sloan Kettering Cancer Center
Awards and Honors
- Chief Resident, Radiation Oncology, Memorial Sloan Kettering Cancer Center (2025)
- Roentgen Research Award, Radiological Society of North America (RSNA) (2025)
- Distinction in Research, University of Michigan Medical School (2020)
- Carolyn L. Kuckein Student Research Fellowship, Alpha Omega Alpha (2018)
- National Institutes of Health T35 Grant Awardee, University of Michigan Medical School (2017)
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.
In Network Coverage Type
HMO, EPO PPO, POS, Transplant
In Network Coverage Type
PPO
In Network Coverage Type
PPO, POS, EPO, HMO
In Network Coverage Type
PPO, HMO
In Network Coverage Type
HMO, PPO
In Network Coverage Type
HMO
In Network Coverage Type
HMO, PPO
In Network Coverage Type
HMO, EPO PPO, POS
In Network Coverage Type
Supplemental
In Network Coverage Type
PPO, POS, HMO
In Network Coverage Type
POS, EPO, HMO
In Network Coverage Type
State Government
In Network Coverage Type
State Government
In Network Coverage Type
PPO, POS, EPO, HMO
Offers a qualified health plan from the Health Insurance Marketplace. Call Emblem to learn more.
In Network Coverage Type
HMO
In Network Coverage Type
PPO, HMO
In Network Coverage Type
HMO
In Network Coverage Type
PPO
In Network Coverage Type
HMO, EPO
Offers a qualified health plan from the Health Insurance Marketplace. Call Fidelis to learn more.
In Network Coverage Type
HMO
In Network Coverage Type
PPO
In Network Coverage Type
State Government
In Network Coverage Type
EPO, HMO, PPO, POS
Offers a qualified health plan from the Health Insurance Marketplace. Call Healthfirst to learn more.
In Network Coverage Type
HMO
In Network Coverage Type
PPO EPO
In Network Coverage Type
HMO
In Network Coverage Type
PPO
In Network Coverage Type
EPO
In Network Coverage Type
EPO
In Network Coverage Type
TBD
In Network Coverage Type
PPO, POS, EPO
In Network Coverage Type
Federal Government
In Network Coverage Type
HMO
City Employee Health Plans (Gold and Gold Care)
In Network Coverage Type
Supplemental
In Network Coverage Type
PPO/OAP
In Network Coverage Type
PPO, POS, EPO, HMO
In Network Coverage Type
HMO/EPO
In Network Coverage Type
PPO, EPO
In Network Coverage Type
State Government
In Network Coverage Type
PPO, POS, HMO
In Network Coverage Type
PPO, HMO
In Network Coverage Type
PPO, POS
In Network Coverage Type
PPO, POS, HMO
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
Contact and Location
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
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. McMillan’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
Your trust is our main concern
We strive to keep reviews trustworthy, honest and fair. Learn more about our patient experience reviews.