
Geoffrey Y. Ku, MD
Medical Oncologist
Titles
Assistant Attending Physician
Clinical Expertise
Gastrointestinal Malignancies; New Chemotherapies; Esophageal and Gastric Cancers
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.
Dr. Ku 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
- 646-888-4588 Office Phone
- Speaks English

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, University of Pennsylvania School of Medicine
Residencies
NewYork-Presbyterian Hospital/Weill Cornell Medical Center
Fellowships
Memorial Sloan Kettering Cancer Center
Board Certifications
Medical Oncology
I am a medical oncologist who cares for people with cancer in the gastrointestinal tract, including esophageal, stomach, colorectal, and pancreatic cancers. I graduated from the University of Pennsylvania School of Medicine. I completed an internal medicine residency at NewYork-Presbyterian Hospital at Weill Cornell, followed by a medical oncology fellowship at Memorial Sloan Kettering . I also spent an additional year at the Ludwig Center for Cancer Immunotherapy at MSK. My research in that time focused on translational correlative assays for the then new field of immunotherapy.
Read more
Now, my research focuses on developing new treatments for people with esophageal and gastric cancers. I am particularly interested in exploring the combination of chemotherapy and radiation to treat esophageal cancer. I am also investigating immunotherapy and targeted therapies both to cure and to minimize the symptoms of cancer. I am currently Head of the Esophagogastric Section in the Gastrointestinal Oncology Service.
I was a member of the Gastrointestinal Non-Colorectal Cancer Track for the Scientific Program Committee of the American Society of Clinical Oncology. I was privileged to serve as the Track Leader for 2015–2016. I am currently a member of the National Cancer Institute’s Esophagogastric Task Force and NRG Oncology’s Gastrointestinal Non-Colorectal Cancer Core Committee.
Awards and Honors
- Castle Connolly: America's Top Doctors (2023)
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.
Clinical Trials
- Clinical Trials Investigated by Dr. Ku
- A Phase I Study of Telomelysin Added to Chemoradiation for Patients with Advanced Inoperable Esophageal Cancer
- A Phase I Study of TJ033721 Immunotherapy in People with Advanced Pancreatic or Esophagogastric Cancer
- A Phase I/II Study of Durvalumab and Chemoradiation before Surgery for Esophageal Cancer
- A Phase IB Study of CAR T-Cell Therapy in People with Advanced Stomach or Pancreatic Cancers
Read more
- A Phase III Study of Lenvatinib/Pembrolizumab Immunotherapy/Chemotherapy Compared with Standard Chemotherapy as Initial Treatment for Advanced Gastroesophageal Adenocarcinoma
- A Phase III Study of Pembrolizumab Immunotherapy, Lenvatinib, and Chemotherapy versus Standard Treatment as Initial Therapy for Metastatic Esophageal Cancer
- Clinical Trials Co-Investigated by Dr. Ku
- A Phase I Study of BDC-1001 Alone or in Combination with Pembrolizumab Immunotherapy in People with Advanced Solid Tumors that Make Too Much HER2
- A Phase I Study of BDC-1001 Alone or in Combination with Pembrolizumab Immunotherapy in People with Advanced Solid Tumors that Make Too Much HER2

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. Ku’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.
Geoffrey Y. Ku discloses the following relationships and financial interests:
-
AstraZeneca
Provision of Services -
Bristol-Myers Squibb
Provision of Services
-
Merck & Co Inc.
Provision of Services -
Zymeworks Inc.
Provision of Services
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].