Gustav Cederquist, MD, PhD
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Areas of Expertise
Conditions I Treat
- Brain tumors
- Brain metastases
- Lymphoma
My Specialties
- Intensity-modulated radiation therapy (IMRT)
- Image-guided radiation therapy (IGRT)
- Volumetric modulated arc therapy (VMAT)
Get to Know Me
I am a radiation oncologist with special training in the treatment of brain tumors and blood cancers. I care for people with primary and secondary brain tumors, lymphoma, multiple myeloma, and leukemia. I see patients at Memorial Sloan Kettering Nassau on Long Island.
My goal is to combine the latest and most precise radiation techniques with thoughtful care to help patients and their families navigate these diagnoses.
I was drawn to cancer care because I believe it is a privilege to support patients and their families during some of the most challenging times in their lives. I believe in clear communication and partnering with my patients to make decisions about their care. No two patients are the same. I take the time to explain treatment options, answer questions, and work closely with each patient to develop a unique plan.
I also work closely with different experts including medical oncologists, neurosurgeons, hematologists, and radiologists. This helps us deliver comprehensive and coordinated care for my patients. The true multidisciplinary approach is one of the defining strengths of MSK, and it is a privilege to practice in an environment where patients benefit from a high level of collective expertise.
My academic journey began at Harvard University, where I trained in molecular biology and neuroscience. After dual MD and PhD training at Weill Cornell, I completed my residency and two fellowships in radiation oncology at Memorial Sloan Kettering Cancer Center (MSK).
Beyond the clinic, I have a passion to improve treatments for brain tumors through research. My research has two primary goals. First, I aim to reduce the side effects of brain radiotherapy by understanding how radiation impacts brain tissue and the immune microenvironment. Our studies aim to identify new pathways for delivering the best treatments while reducing harmful side effects.
Second, I am also involved in early-stage clinical studies to understand how we can integrate radiotherapy to improve therapies such as CAR T cells, immunomodulators, and targeted agents for CNS tumors. My research has clear, practical goals to not only improve the effectiveness of treatments, but also to preserve quality of life for patients during and after therapy.
I am deeply grateful to work at MSK, where patients benefit from access to world-class care, and the latest treatments and clinical trials that are often unavailable elsewhere. The opportunity to contribute to an institution that combines scientific discovery with compassionate, patient-centered care is both humbling and inspiring. Each day, I am motivated by the chance to offer patients not only the latest advances in radiation therapy but also the reassurance that they are supported by a team of experts who are fully invested in their well-being.
When I’m not working, I enjoy spending time with my family, whether that is coaching my three children in youth sports, helping them with their garden, or spending summer days together in the park. These personal passions help me bring energy, focus, and empathy to my work as a physician and researcher.
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
- Brain tumors
- Brain metastases
- Lymphoma
- Multiple myeloma
- Leukemia
My Specialties
- Intensity-modulated radiation therapy (IMRT)
- Image-guided radiation therapy (IGRT)
- Volumetric modulated arc therapy (VMAT)
- Stereotactic body radiation therapy (SBRT)
- Clinical trials
Education
- BA, Molecular and Cellular Biology, Harvard University MD, Weill Cornell Medicine
- PhD, Neuroscience, Weill Cornell Medicine
Residencies
- Transitional Year Internship, Memorial Sloan Kettering Cancer Center
- Radiation Oncology
- Memorial Sloan Kettering Cancer Center
Fellowships
- Holman Research Pathway, Memorial Sloan Kettering Cancer Center
- Lymphoma Radiotherapy, Memorial Sloan Kettering Cancer Center
Awards and Honors
- Chief Resident, Radiation Oncology, Memorial Sloan Kettering Cancer Center (2024)
- Resident Seed Grant, ASTRO (2023)
- Alpha Omega Alpha Medical Honor Society, Weill Cornell Medicine (2019)
- Daedalus Fund for Innovation, Weill Cornell Medicine (2017)
- Creative Innovation Prize Honorable Mention, Regeneron (2016)
Insurance Information
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PPO
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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
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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.
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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
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Federal Government
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HMO
City Employee Health Plans (Gold and Gold Care)
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Supplemental
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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
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Contact and Location
Dr. Cederquist sees patients at one 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.
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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
- Cederquist GY, Schefflein J, Devlin SM, Shah GL, Shouval R, Hubbeling H, Tringale K, Alarcon Tomas A, Fregonese B, Hajj C, Boardman A, Luna De Abia A, Corona M, Cassanello G, Dahi PB, Lin RJ, Ghione P, Salles G, Perales MA, Palomba ML, Falchi L, Scordo M, Grommes C, Yahalom J, Imber BS. CNS bridging radiotherapy achieves rapid cytoreduction before CAR T-cell therapy for aggressive B-cell lymphomas. Blood Adv. 2024 Oct 8;8(19):5192-5199. PMID: 38861344; PMCID: PMC11530392.
- Cederquist GY, Tringale K, Yahalom J, Imber BS. The contemporary spectrum of radiotherapy for hematologic malignancies involving the central nervous system: From focal therapy to craniospinal. Semin Radiat Oncol. 2025 Jan;35(1):126-137. PMID: 39672637; PMCID: PMC11649007.
- Cederquist GY, Boe LA, Walsh M, Freedman GM, Maxwell KN, Taunk N, Braunstein LZ. Radiation-Associated Secondary Cancer in Patients With Breast Cancer Harboring TP53 Germline Variants. JAMA Oncol. 2024 Nov 1;10(11):1588-1590. PMID: 39264591; PMCID: PMC11393750.
- Cederquist GY, Asciolla JJ, Tchieu J, Walsh RM, Cornacchia D, Resh MD, Studer L. Specification of positional identity in forebrain organoids. Nat Biotechnol. 2019 Apr;37(4):436-444. Epub 2019 Apr 1. PMID: 30936566; PMCID: PMC6447454.
Visit PubMed for a full listing of Dr. Cederquist’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.
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