Mario M. Leitao, Jr., MD, FACOG, FACS
Fellowship Director, Gynecology Service; Director, Minimal Access and Robotic Surgery Program, Department of Surgery
Gynecologic Cancers (Cervical, Uterine, Ovarian); Complex Benign Gynecologic Conditions; Fertility-Sparing Radical Trachelectomy; Minimally Invasive Surgery; Robotic Surgery
New Patient Appointments
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Dr. Leitao, Jr. accepts the following list of insurance providers. Select your insurance provider to see more details.
Memorial Sloan Kettering is an in-network provider with Aetna HMO, POS, and PPO plans. Aetna does not include us in any of the plans you can purchase through the insurance exchanges or through Medicare. Please ask your insurance if you need a one-time referral. MSK has an agreement with the Aetna Transplant Program for all Aetna's commercial products.
In New York State
Memorial Sloan Kettering is an in-network provider with Empire Blue Cross Blue Shield (Wellpoint) of New York HMO, EPO, PPO, and POS plans, with the following exceptions:
- Empire Blue Cross Blue Shield does not include us in any of the plans you can buy through the insurance exchanges.
- Memorial Sloan Kettering is not an in-network provider for Empire's Medicare Managed Care plan known as Mediblue).
- Memorial Sloan Kettering is a designated Center of Excellence by Blue Cross Blue Shield.
In New Jersey
Memorial Sloan Kettering is an in-network provider with some Horizon Blue Cross Blue Shield of New Jersey plans for individuals, families, and small businesses. For example, the PPO plan is in-network with our Manhattan locations.
Horizon Blue Cross HMO is only in-network with our Basking Ridge, Bergen and Monmouth locations. It does not allow access to our Manhattan facilities.
Horizon Blue Cross PPO is in network with our Basking Ridge, Bergen, Monmouth and Manhattan locations.
OMNIA Plans: Tier I EPO based plan policy is only in-network with our Basking Ridge, Bergen and Monmouth locations and does not allow access to our Manhattan sites. Tier II EPO is only in-network with our Manhattan sites if it is a blue-card plan (there would be a suitcase logo indicating PPO on the front of the card).
Other plans may only be in-network at our Basking Ridge, Bergen or Monmouth locations.
Outside New York State and New Jersey
Some, but not all, Blue Cross Blue Shield plans outside of New York and New Jersey include Memorial Sloan Kettering as an in-network provider. Contact your insurance to find out if your plan provides in-network access to Memorial Sloan Kettering.
We understand that there may be many complexities involved with insurance coverage purchased through the health exchange network of the Affordable Care Act. We’re here to help. If you have questions about how your care will be covered by an insurance provider, or need help navigating a change in coverage, please call us at 646-227-3378; if you are not a resident of New York, you can call us at 866-248-1274. Our team is here to listen to your concerns and assist you in any way we can. We want our care to be as accessible and affordable for as many people as possible.
Memorial Sloan Kettering is an in-network provider with CIGNA's HMO, POS, and PPO plans. CIGNA does not include us in any of the plans you can buy through the insurance exchanges.
- If you are a New York State resident: Please ask your insurance if you need a one-time referral.
- If you live outside of New York State: Please ask your insurance if you have in-network access to Memorial Sloan Kettering.
Memorial Sloan Kettering is an in-network provider with EmblemHealth’s PPO, EPO, POS, HMO plans and Medicare plans. Emblem Health does not include us in any of its Select Care network plans. EmblemHealth includes GHI, HIP, Vytra, and ConnecticCare (in NYS Only). You must bring a referral from your Emblem primary care doctor to your first appointment.
Memorial Sloan Kettering is an in-network provider with HealthFirst’s commercial products; these commercial products are not purchased on the insurance exchanges.
Memorial Sloan Kettering is an in-network provider with HealthSmart’s Accel, HSPC, and HPO networks.
Memorial Sloan Kettering is a designated Center of Excellence by Humana.
Memorial Sloan Kettering is a designated Center of Excellence by Interlink Health Services.
Memorial Sloan Kettering is a designated Center of Excellence by Lifetrac.
Memorial Sloan Kettering is an in-network provider for all MagnaCare health plans except those products you can buy through the insurance exchanges.
In New York: Memorial Sloan Kettering’s New York locations are in-network with the Emblem
In New Jersey: Memorial Sloan Kettering’s New Jersey locations in Basking Ridge, Bergen and Monmouth are in-network with the Horizon Medicare Advantage Plan. This plan is not accepted for care provided at MSK’s New York locations.
If you are enrolled in any other Medicare Advantage plan, please contact your insurance carrier to determine your benefits and coverage at Memorial Sloan Kettering since your access may be limited.
Memorial Sloan Kettering is an in-network provider with some Multiplan/Beech Street/PHCS plans. Contact your insurance carrier to find out if your plan provides in-network access to Memorial Sloan Kettering.
Memorial Sloan Kettering is a designated Center of Excellence by Multiplan.
If you are covered by more than one insurance plan, you will want to determine your benefits from both plans. First, you need to determine which one is your primary insurance provider by contacting your employee benefits office or your insurance carriers. After you find out which is your primary insurance provider, you should then contact your insurance carrier to determine if you have access to Memorial Sloan Kettering.
Memorial Sloan Kettering is an in-network provider with some MVP plans. Contact your insurance carrier to find out if your plan provides in-network access to Memorial Sloan Kettering.
Memorial Sloan Kettering is an in-network provider for New York State employees who have enrolled in UnitedHealthcare's Cancer Resource Services. If you have the Empire Plan, you should call Cancer Resources Services at 866-936-6002 to verify and enroll in this coverage.
Memorial Sloan Kettering is in-network with Oscar’s Circle Plus Network, a part of its Small Group Broad line that is offered only to select small business groups. Oscar does not include Memorial Sloan Kettering as an in-network provider for any of its individual plans. Please confirm eligibility with your insurance carrier.
We have agreements with several insurance companies that may provide additional coverage for cancer patients. These benefit programs include:
- AXA Assistance USA
- Beech Street
- Integrated Health Plans
- National Health Administrators
- National Preferred Provider Network
- UnitedHealthcare's Cancer Resource Services
- United Resource Network
- Veterans Choice Program
Memorial Sloan Kettering is an in-network provider with Oxford’s Freedom and Liberty plans as well as the Metro Plan (which is only offered to small business groups and no longer offered as individual plans). Please confirm with your insurance if you need a one-time referral. Note: Oxford’s Medicare Managed Care plan — Secure Horizon — does not include Memorial Sloan Kettering as an in-network provider. Oxford does not include us in any of the plans you can buy through the insurance exchanges.
Memorial Sloan Kettering is an in-network provider with the World Trade Center Health Program.
Memorial Sloan Kettering is an in-network provider with QualCare's PPO and HMO/POS network.
Memorial Sloan Kettering is a designated Center of Excellence by Specialty Care Management.
Hospital and physician services may be covered by TRICARE. Please call your TRICARE plan to confirm coverage at Memorial Sloan Kettering.
Memorial Sloan Kettering is an in-network provider with UnitedHealthCare's HMO, POS, and PPO plans. Please confirm with your insurance if a one-time referral is needed.
UnitedHealthCare's Medicare Managed Care plan does not include Memorial Sloan Kettering as an in-network provider.
United does not include us in any of the plans you can buy through the insurance exchanges.
Memorial Sloan Kettering is a designated Center of Excellence by UnitedHealthcare.
Contact and Location
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.
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
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.
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
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.
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.
Mario M. Leitao, Jr. discloses the following relationships and financial interests:
New York State Office of the Attorney General
Provision of Services (uncompensated)
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, 2020 through disclosure submission in spring 2021). This data reflects interests that may or may not still exist. This data is updated annually.