
Yelena Y. Janjigian, MD
Gastrointestinal Oncologist
My Role at MSKWe 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
My Specialties
- Gastrointestinal Malignancies
- New Chemotherapies
- Esophageal and Gastric Cancers
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About Me
- Chief, Gastrointestinal Oncology Service
I am a board-certified medical oncologist who specializes in the treatment of cancers of the gastrointestinal (GI) tract. My clinical practice and research are focused on improving treatment outcomes for people with esophageal and stomach cancers.
As Chief of the Gastrointestinal Oncology Service at Memorial Sloan Kettering Cancer Center, my mission is to foster research and innovation that transform the future of GI oncology to help patients worldwide.
A gastrointestinal (GAS-troh-EN-teh-RAH-loh-jist) oncologist is a cancer doctor with special training in the gastrointestinal (GI) system. This includes anal, colorectal, esophageal, gastric (stomach), liver, and pancreatic cancers, as well as GI stromal tumors and neuroendocrine tumors.
My Specialties
- Gastrointestinal Malignancies
- New Chemotherapies
- Esophageal and Gastric Cancers
Education
- MD, New York University School of Medicine
Residencies
- Internal Medicine - New York University School of Medicine/Bellevue Hospital
Fellowships
- Hematology/Oncology - Memorial Sloan Kettering Cancer Center
Board Certifications
- Internal Medicine
- Medical 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.
In Network Coverage Type
PPO
In Network Coverage Type
HMO, PPO
In Network Coverage Type
HMO, EPO PPO, POS
In Network Coverage Type
PPO
In Network Coverage Type
EPO
In Network Coverage Type
EPO
In Network Coverage Type
Federal Government
In Network Coverage Type
PPO, POS, EPO, HMO
In Network Coverage Type
State Government
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.
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New Patients
Current Patients
Contact and Location
Dr. Janjigian 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.
Clinical Trials
- Clinical Trials Investigated by Dr. Janjigian
- A Phase 3 Study of Domvanalimab, Zimberelimab, and Chemotherapy Versus Nivolumab and Chemotherapy in People with Previously Untreated Inoperable or Metastatic Stomach, Gastroesophageal Junction, or Esophageal Cancer
- A Phase I Study of TST001 in People with Locally Advanced or Metastatic Digestive Cancers
- A Phase IB/II Study of Trastuzumab Deruxtecan in People with Advanced Gastric Cancer or Gastroesophageal Junction Cancer
- A Phase II Study of Domvanalimab and Zimberelimab Immunotherapy with or without FOLFOX Chemotherapy in People with Esophageal, Gastroesophageal Junction, or Stomach Cancer
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- A Phase II Study of Pembrolizumab Immunotherapy or Placebo after Surgery in Patients with Solid Tumors Containing Certain Genetic Changes
- Clinical Trials Co-Investigated by Dr. Janjigian
- A Phase IB Study of Bemarituzumab plus Chemotherapy and Nivolumab Immunotherapy in People with Stomach or Gastroesophageal Junction Cancer
- A Phase II Study of Amivantamab in People with Esophagogastric Cancer

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. Janjigian’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
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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.
Yelena Y. Janjigian discloses the following relationships and financial interests:
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AbbVie
Professional Services and Activities -
Agence Unik
Professional Services and Activities -
American Association for Cancer Research
Professional Services and Activities -
Arcus Biosciences, Inc.
Professional Services and Activities -
AskGene Pharma, Inc.
Professional Services and Activities (Uncompensated) -
Astellas
Professional Services and Activities -
AstraZeneca
Professional Services and Activities -
Bayer
Professional Services and Activities -
Bristol-Myers Squibb
Professional Services and Activities -
Canadian Gastric Cancer Association
Professional Services and Activities
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Clinical Care Options
Professional Services and Activities -
Daiichi Sankyo
Professional Services and Activities -
GlaxoSmithKline
Professional Services and Activities -
Guardant Health, Inc.
Professional Services and Activities -
Mayo Clinic
Professional Services and Activities -
Merck & Co Inc.
Professional Services and Activities -
PeerView Institute for Medical Education (PVI)
Professional Services and Activities -
PlatformQ Health Education
Professional Services and Activities -
Research to Practice
Professional Services and Activities -
Rgenix
Equity
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, 2022 through disclosure submission in spring 2023). 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].