Thillai Sekar, MD

Areas of Expertise

Conditions I Treat

  • Lung cancer
  • Breast cancers and conditions
  • Gastrointestinal cancers and conditions

My Specialties

  • Imaging of the chest, abdomen, and pelvis
  • CT scan
  • MRI

Get to Know Me

I am a diagnostic radiologist with years of experience in interpreting imaging of the chest, abdomen, and pelvis. I have presented on imaging and been involved with problem-solving at multiple tumor boards. Over the years, I have had exposure to imaging for various types of cancer, including complex cases. I use this accumulated knowledge to benefit all our patients.

My personal experience with cancer has made me very familiar with the course of cancer imaging and treatment. From the perspective of a diagnostic radiologist, I know accurate imaging reports are important for successful treatment and understand the anxiety that patients may experience related to these procedures and results.   

My approach is patient centered. I am committed to producing high-quality imaging reports that help achieve successful treatment outcomes and minimize patient worry. 

What I Do at MSK

I'm a radiologist, which is a doctor with special training in using imaging to diagnose and treat disease. Imaging includes X-rays, computed tomography (CT), and magnetic resonance imaging (MRI).

  • Assistant Attending Physician
Areas of Expertise

Conditions I Treat

  • Lung cancer
  • Breast cancers and conditions
  • Gastrointestinal cancers and conditions
  • Liver cancer and conditions
  • Gallbladder cancer
  • Bile duct cancer (cholangiocarcinoma)
  • Genitourinary cancers and conditions
  • Gynecologic cancers and conditions

My Specialties

  • Imaging of the chest, abdomen, and pelvis
  • CT scan
  • MRI
  • Ultrasound
Education & Honors

Education

  • MD, Rutgers New Jersey Medical School

Residencies

  • Diagnostic Radiology, Rutgers New Jersey Medical School

Fellowships

  • Abdominal Imaging, Columbia University Medical Center

Board Certifications

  • Diagnostic Radiology

Insurance Information

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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.

Contact and Location

Location
West Harrison, NY
Montvale, NJ
500 Westchester Avenue West Harrison NY 10604
225 Summit Avenue Montvale NJ 07645

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

Smiling doctors in the lab
Find a Clinical Trial for You

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 trials

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Sekar’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 PubMed

Disclosures

Members of the MSK Community 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. These activities outside of MSK further our mission, provide productive collaborations, and promote the practical application of scientific discoveries.

MSK requires doctors, faculty members, and leaders 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. Not all disclosed interests and relationships present conflicts of interest. MSK reviews all disclosed interests and relationships to assess whether a conflict of interest exists and whether formal COI management is needed.

Thillai Sekar discloses the following relationships and financial interests:

No disclosures meeting criteria for time period


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 a complement to other publicly reported data and 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, 2024 through disclosure submission in spring 2025). 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 ecoi@mskcc.org.


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