
Gregory J. Riely, MD, PhD
Thoracic Oncologist
Titles
Vice Chair of Clinical Research, Department of Medicine
Clinical Expertise
Thoracic Oncology; Lung Cancer; Thymoma; Thymic Carcinoma
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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
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Dr. Riely 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
- 646-608-3913 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, Case Western Reserve University
Residencies
Internal Medicine - New York Presbyterian/Weill Cornell Medical Center
Fellowships
Medical Oncology - Memorial Sloan Kettering Cancer Center; Medicine - Weill Cornell Medical College
Board Certifications
Internal Medicine; Medical Oncology
I am a board-certified medical oncologist who specializes in treating patients with lung cancer and thymic tumors (thymoma and thymic carcinoma).
In addition to caring for men and women with these diseases, I work to develop new treatments by designing and conducting clinical trials. My clinical research focuses on the treatment of patients with thymic tumors as well as non-small cell lung cancer with specific mutations (EGFR, KRAS, BRAF, or EML4-ALK mutant non-small cell lung cancer).
Awards and Honors
- Fellow, American Society of Clinical Oncology (2023)
- Castle Connolly: America's Top Doctors (2023)
- Castle Connolly: New York Magazine: Top Doctor (2018-2019, 2021)
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 Co-Investigated by Dr. Riely
- A Phase 1 Study of RMC-6291 in People with KRAS-Mutated Solid Tumors
- A Phase 1/2 Study of VS-6766 plus Adagrasib for People with Non-Small Cell Lung Cancer
- A Phase I Study of BDTX-1535 in People with Advanced Non-Small Cell Lung Cancer
- A Phase I Study of GDC-6036 in People with Metastatic Lung Cancer with a KRAS G12C Mutation
Read more
- A Phase I Study of Patritumab Deruxtecan in Combination with Osimertinib in People with Advanced Non-Small Cell Lung Cancer with an EGFR Mutation
- A Phase I/II Study of BLU-451 in People with Non-Small Cell Lung Cancer
- A Phase I/II Study of MRTX849 in Patients with KRAS G12C-positive Cancers
- A Phase I/IIA Study of CLN-081 in People with Non-Small Cell Lung Cancer
- A Phase II Study of Combination Therapies for Advanced Non-Small Cell Lung Cancer with an EGFR Mutation that Has Grown Despite Osimertinib
- A Phase II Study of DS-7300a in People with Previously Treated Extensive Stage Small Cell Lung Cancer
- A Phase II Study of Osimertinib Alone or with Chemotherapy for Patients with Metastatic EGFR-Mutant Lung Cancers Who Have Detectable Tumor DNA in the Blood After Starting Osimertinib
- A Phase III Study of MK-7684 with Pembrolizumab Immunotherapy (MK-7684A) versus Pembrolizumab Alone as Initial Treatment for Metastatic Non-Small Cell Lung Cancer
- A Phase III Study of Osimertinib with or without Bevacizumab as Initial Treatment for Patients with EGFR-Mutant Non-Small Cell Lung 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. Riely’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.
Gregory J. Riely discloses the following relationships and financial interests:
-
American Association for Cancer Research
Provision of Services (uncompensated) -
American Society of Clinical Oncology (ASCO)
Provision of Services (uncompensated) -
BioPharm Communications, LLC
Provision of Services -
Boehringer Ingelheim
Provision of Services (uncompensated) -
Dana Farber
Provision of Services -
Harborside Press LLC
Provision of Services -
MJH Associates
Provision of Services
-
Mirati Therapeutics
Provision of Services (uncompensated) -
National Comprehensive Cancer Network
Provision of Services -
Pfizer, Inc.
Provision of Services (uncompensated) -
Research to Practice
Provision of Services -
Takeda Pharmaceuticals
Provision of Services (uncompensated) -
Verastem
Provision of Services (uncompensated) -
WebMD
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].