Mario M. Leitao, Jr., MD, FACOG -- Co-Director, Robotic Surgery

Mario M. Leitao, Jr., MD, FACOG, FACS



Fellowship Director, Gynecology Service; Director, Minimal Access and Robotic Surgery Program, Department of Surgery

Clinical Expertise

Gynecologic Cancers (Cervical, Uterine, Ovarian); Complex Benign Gynecologic Conditions; Fertility-Sparing Radical Trachelectomy; Minimally Invasive Surgery; Robotic Surgery

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Accepted Insurance Providers

Dr. Leitao, Jr. accepts the following list of insurance providers. Select your insurance provider to see more details.

Contact and Location

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Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offers many services, including screening, chemotherapy, and medical testing.

About Me


MD, University of Medicine and Dentistry of New Jersey/Robert Wood Johnson Medical School


Obstetrics and Gynecology - Beth Israel Medical Center


Gynecologic Oncology - Memorial Sloan Kettering Cancer Center

Board Certifications

Obstetrics and Gynecology; Gynecologic Oncology

I am a board-certified gynecologic oncologist who specializes in surgery for women with ovarian, endometrial, cervical, vulvar, or vaginal cancer.

I have a strong interest in providing minimally invasive surgical options for our patients, including both laparoscopic and robotic-assisted procedures. In 2006, I became one of the first gynecologic oncologists to use the da Vinci® Surgical System to perform robotically-assisted procedures in women with benign and malignant gynecologic conditions. Minimally invasive procedures result in less blood loss than do traditional surgeries, allowing for shorter hospital stays and faster recuperation time for patients. I serve as the Director for the Minimal Access and Robotic Surgery Program in the Department of Surgery at Memorial Sloan Kettering and have helped to build one of the best and most experienced robotic surgery programs in the world across multiple surgical specialties.

I also perform radical procedures via traditional laparotomy in cases when these more-traditional surgeries may provide better results and longer survival. These include debulking for ovarian cancer and radical procedures for other gynecologic cancers. Additionally, using the robotic approach, I perform fertility-sparing surgery (radical trachelectomy) for women with early-stage cervical cancer. I continue to seek ways to improve outcomes for my patients and continuously seek to evaluate cutting edge technologies in surgery.

I also have a strong interest in clinical research. Research is vital for development of better treatments for all patients diagnosed with cancer. People with cancer face a difficult journey, and clinical trials are just one of the tools I offer my patients to help them during this time. I serve as the principal investigator at Memorial Sloan Kettering for the Gynecologic Oncology Group — a national group conducting quality cooperative research at many institutions throughout the country.

In 2004, I completed my fellowship at Memorial Sloan Kettering and received the Michael E. Burt Memorial Award for Clinical Excellence. I then became Director of Gynecologic Services at the New Jersey Medical School, where I received the National Faculty Award from the Council on Resident Education in Obstetrics and Gynecology. I joined the Memorial Sloan Kettering staff in 2007. I am a member of many medical societies and the author of peer-reviewed scientific articles, chapters, and reviews.

I am at the Main Campus in Manhattan Monday through Thursday, and I see patients every Friday at our Basking Ridge, New Jersey, location.

Awards and Honors

  • Castle Connolly: New York Magazine Top Doctors (2017)


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

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.

Research and Publications

Leitao Jr. MM. Goldsmtih LT. Optimal study design and the CONSORT guidelines. (letter) Fertil Steril 2005;84:105

Leitao Jr., MM, Chi DS. Fertility-sparing options for patients with gynecologic malignancies. The Oncologist 2005;10:613-22. CME activity

Leitao Jr. MM, Chi DS. Cytoreductiv surgery for ovarian cancer. Postgraduate obstetrics and Gynecology 2004;24(10): 1-8. CME activity

Leitao Jr. MM, Barakat RR. Medical therapy for endometrial hyperplasia and early endometrial cancer in patients desiring future childbearing. In Angioli R, Panici B., Kavanagh D, Pecorelli S., Penalver M (eds): chemotherapy for Gynecologic Neoplasms: current Therapy and Novem Approaches, 1st ed, 2004:507-517.

Hensley ML, Leitao Jr. MM, Brown CL. Management of early epithelial ovarian cancer. In: Markman M (ed). Atlas of Cancer. Phhiladelphia, PA: Current Science, 2003:87-91

Leitao Jr., MM, Hoskins WJ. Surgical cytoreductin. In: Levine DA, Barakat RR, Hosking WJ (eds): Atlas of Procedures in Gynecologic Oncology, 1st ed, 2003:45-80.

Leitao Jr. MM, Brown C. Radical abdominal hysterectomy. In: Levine DA, Barakat RR, Hoskins WJ (eds): Atlas of procedures in Gynecologic Oncology, 1st ed, 2003:33-44

Leitao Jr. MM, Chi DS. Recurrent cervical cancer. Current Treatment Options in Oncology. Gynecologic Tumors 2002; 3(2) :105-111.


Publications on PubMed

Visit PubMed for a full listing of Dr. Leitao, Jr.’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.