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
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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.
Memorial Sloan Kettering is a designated Blue Distinction Center for bone marrow transplant and CAR-T.
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. 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. In-network participation exceptions include:
- Emblem’s HIP Commercial Millennium, Select Care and Enhanced Care Prime networks is not in-network with Memorial Sloan Kettering.
- Please call Emblem to confirm if your specific plan is in-network.
For information regarding Memorial Sloan Kettering’s participation with Emblem’s Medicare Advantage Plans, please refer to the Medicare & Medicaid page
Memorial Sloan Kettering is an in-network provider with Empire Blue Cross Blue Shield (Wellpoint) of New York Indemnity, HMO, EPO, PPO, POS and Medicare Advantage 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.
- Please call Empire BCBS to confirm if your specific plan is in-network with Memorial Sloan Kettering.
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.
For our NJ locations, Memorial Sloan Kettering is an in-network provider with most Horizon Blue Cross Blue Shield of New Jersey plans for individuals, families, and small businesses. Horizon members with Blue Card Access (there would be a suitcase logo on the front of the card) may have access to our NY locations. Please call Horizon to confirm if your plan is in-network in NY.
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.
For information about Medicare and Medicaid, please visit this page
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.
Most Blue Cross Blue Shield plans include Memorial Sloan Kettering as an in-network provider. Contact your insurance company to confirm if Memorial Sloan Kettering is in-network.
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 Top Doctor - 5 Years
- Castle Connolly: Top Doctor (2015-2021)
- 2021 Top Reviewers, International Journal of Gynecologic Cancer (2021)
- Castle Connolly: New York Magazine Top Doctors (2021, 2017)
- Reviewer of the Month, International Journal of Gynecologic Cancer (2019)
- NJ BIZ Healthcare Heroes Physician of the Year finalist (2017)
- Best Doctors in America® distinction, Best Doctors Inc. (2007-2016)
- Fellow (FACS), American College of Surgeons (2014)
- Certificate of Excellence in Reviewing, Gynecologic Oncology Case Reports (2013)
- Named a "Top Oncologist in New York," International Association of Oncologists (IAO )
- Honorable Mention Scientific Paper/Gynecology, SLS-MIRA-SRS Joint Annual Meeting & Endo Expo (2012)
- Recognized as one of “America’s Most Compassionate Doctors, The Patients’ Choice recognition program (PatientsChoice.org )
- Named in Consumers’ Research Council of America’s “Guide to America’s Top Oncologists” (2010, 2007)
- Scope of Excellence Award, Kaleidoscope of Hope Foundation (2010)
- Who’s Who Among Executives and Professionals (2010)
- Council on Resident Education in Obstetrics and Gynecology National Faculty Award, UMDNJ-New Jersey Medical School (2006)
- Michael E. Burt Award for Clinical Excellence, Department of Surgery, MSKCC (2004)
- Merit Award, American Society of Clinical Oncology 38th Annual Meeting (2002)
- Outstanding Poster Award, New York Obstetrical Society (2002)
- Best Poster Presentation Award, Glaxo Smith Kline National Gynecologic Oncology Fellows Forum (2002)
- Outstanding Fellow Paper Award, New York Obstetrical Society (2001)
- Berlex Best Teaching Resident Award, Beth Israel Medical Center (1998)
- Clinical Trials Investigated by Dr. Leitao, Jr.
- A Phase II Study Assessing Radiation Therapy and Cisplatin Chemotherapy for People with Vulvar Cancer in the Sentinel Lymph Nodes
- A Study Comparing Robotic-Assisted Laparoscopy and Laparotomy for Radical Hysterectomy in People with Cervical 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.
Research and Publications
Salvo G, Ramirez PT, Leitao MM, Cibula D, Wu X, Falconer H, Persson J, Perrotta M, Mosgaard BJ, Kucukmetin A, Berlev I, Rendon G, Liu K, Vieira M, Capilna ME, Fotopoulou C, Baiocchi G, Kaidarova D, Ribeiro R, Pedra-Nobre S, Kocian R, Li X, Li J, Palsdottir K, Noll F, Rundle S, Ulrikh E, Hu Z, Gheirghe M, Saso S, Bolatbekova R, Tsunoda A, Pitcher B, Wu J, Urbauer D, Pareja R. Open versus minimally invasive radiacal trachelectomy in early-stage cervical cancer: International Radical Trachelectomy Assessment Study. Am J Obstet Gynecol 2022;226:97.e1-97.e16.
Manning-Geist B, Chi DS, Long Roche K, Zivanovic O, Sonoda Y, Gardner GJ, O’Cearbhaill RE, Abu-Rustum NR, Leitao MM Jr. Quaternary and beyond cytoreduction: an updated and expanded analysis. Gynecol Oncol Rep 2021 Aug 24;37:100851. doi: 10.1016/j.gore.2021.100851. eCollection 2021 Aug. PMID: 34485661
Wenzel L, Osann K, McKinney C, Cella D, Fulci G, Scroggins MJ, Lankes HA, Wang V, Nephew KP, Maxwell GL, Mok SC, COnrads TP, Miller A, Mannel RS, Gray HJ, Hanjani P, Huh WK, Spirtos N, Leitao MM, Glaser G, Sharma SK, Santin AD, Sperduto P, Lele SB, Burger RA, Monk BJ, Birrer M. Quality of life and adverse events: prognostic relationships in long-term ovarian cancer survival. J Natl Cancer Inst 2021;113:1369-1378.
Manning-Geist B, Chi DS, Long Roche K, Zivanovic O, Sonoda Y, Gardner GJ, O’Cearbhaill RE, Abu-Rustum NR, Leitao MM Jr. Tertiary cytoreduction for recurrent ovarian carcinoma: an updated and expanded analysis. Gynecol Oncol 2021;162:345-352.
Leitao MM Jr, Zhou QC, Schiavone MB, Cowan RA, Smith ES, Iasonos A, Veith M, Rafizadeh M, Curran K, Ramesh B, Chang K, Chi DS, Sonoda Y, Brown AK, Cosin JA, Abu-Rustum NR, Martino MA, Mueller JJ, Long Roche K, Jewell EL, Broach V, Lambrou NC, Diaz JP, Zivanovic O. Prophylactic negative-pressure wound therapy in postoperative incision management: a randomized clinical trial. Obstet Gynecol 2021;137:334-341.
Moloney K, Janda MM, Frumovitz M, Leitao M Jr, Abu-Rustum N, Rossi E, Nicklin JL, Plante M, Lecuru F, Buda A, Mariani A, Leung Y, Ferguson S, Pareja R, Kimmig R, Tong PSY, McNally O, Chetty N, Kaijiang L, Jaaback K, Lau J, Ng J, Falconer H, Persson J, Land R, Martinelli F, Garrett A, Altman A, Pendlebury A, Cibula D, Altamirano-Assad R, Brennan D, Ind T, de Kroon C, Tse KY, Hanna GB, Obermair A. Development of a surgical competency assessment tool for sentinel lymph node dissection by minimally invasive surgery for endometrial cancer. Int J Gynecol Cancer 2021;31:647-655.
Stasenko M, Jayakumaran G, Cowan R, Broach V, Chi D, Rossi A, Hollman T, Zehir A, Abu-Rustum NR, Leitao Jr MM. Genomic alterations as potential therapeutic targets in extramammary paget’s disease of the vulva. JCO Precis Oncol 2020 Sep 15;4:PO.20.00073. doi:10.1200/PO.20.00073.
Zivanovic O, Chen L, Vickers A, Straubhar A, Baser R, Veith M, Aiken N, Carter J, Curran K, Simon B, Mueller J, Jewell E, Chi D, Sonoda Y, Abu-Rustum N, Leitao Jr MM. Electronic patient-reported symptom monitoring in patients recovering from ambulatory minimally invasive gynecologic surgery: a prospective pilot study. Gynecol Oncol 2020;159:187-194.
Brandt B, Sioulas V, Basaran D, Kuhn T, LaVigne K, Gardner GJ, Sonoda Y, Chi DS, Roche KCL, Mueller JJ, Jewell EL, Broach VA, Zivanovic O, Abu-Rustum NR, Leitao Jr MM. Minimally invasive surgery versus laparotomy for radical hysterectomy in the management of early-stage cervical cancer: survival outcomes. Gynecol Oncol 2020;156:591-597.
Chase DM, Huang HQ, Monk BJ, Ramondetta LM, Penson RT, Gil K, Landrum LM, Leitao MM, Oaknin A, Huh WK, Pulaski HL, Robison K, Guntupalli SR, Richardson D, Salani R, Sill MW, Wenzel LB, Tewari KS. Patient-reported outcomes at discontinuation of anti-angiogenesis therapy in the randomized trial of chemotherapy with bevacizumab for advanced cervical cancer: An NRG Oncology Group study. Int J Gynecol Cancer 2020;30:596-601.
Leitao Jr MM, Zhou QC, Gomez-Hidalgo NR, Iasonos A, Baser R, Mezzancello M, Chang K, Ward J, Chi DS, Long K, Sonoda Y, Brown CL, Mueller J, Gardner G, Jewell E, Broach V, Zivanovic O, Dowdy SC, Mariani A, Abu-Rustum NR. Patient reported outcomes after surgery for endometrial carcinoma: prevalence of lower extremity lymphedema after sentinel lymph node mapping compared to lymphadenectomy. Gynecol Oncol 2020;156:147-153.
Schlappe BA, Weaver AL, McGree ME, Ducie J, Eriksson AGZ, Dowdy SC, Cliby WA, Glaser GE, Abu-Rustum NR, Mariani A, Leitao Jr MM. Multicenter study comparing oncologic outcomes after lymph node assessment via a sentinel lymph node algorithm versus comprehensive pelvic and paraaortic lymphadenectomy in patients with serous and clear cell endometrial carcinoma. Gynecol Oncol 2020;156:62-69.
Cybulska P, Sioulas V, Orfanelli T, Zivanovic O, Mueller JJ, Broach VA, Roche KL, Sonoda Y, Hensley ML, O’Cearbhaill RE, Chi DS, Alektiar KM, Abu-Rustum NR, Leitao M. Secondary surgical resection for patients with recurrent uterine leiomyosarcoma. Gynecol Oncol 2019;154:333-337.
Aloisi A, Tseng JH, Sandadi S, Callery R, Feinberg J, Kuhn T, Gardner GJ, Sonoda Y, Brown CL, Jewell EL, Barakat RR, Leitao Jr MM. Is robotic-assisted surgery safe in the elderly population? An analysis of gynecologic procedures in patients ≥65 years old. Ann Surg Oncol 2019;26:244-251.
Schlappe BA, Weaver AL, Ducie JA, Eriksson AGZ, Dowdy SC, Cliby WA, Glaser GE, Soslow RA, Alektiar KM, Makker V, Abu-Rustum NR, Mariani A, Leitao M. Multicenter study comparing oncologic outcomes between two nodal assessment methods in patients with deeply invasive endometrioid endometrial carcinoma: a sentinel lymph node algorithm versus a comprehensive pelvic and paraaortic lymphadenectomy. Gynecol Oncol 2018;151:235-242.
Tseng JH, Aloisi A, Sonoda Y, Gardner GJ, Zivanovic O, Abu-Rustum NR, Leitao MM Jr. Long-term oncologic outcomes of uterine-preserving surgery in young women with stage IB1 cervical cancer. Int J Gynecol Cancer 2018;28:1350-1359.
Ducie JA, Eriksson AGZ, Ali N, McGree ME, Weaver AL, Bogani G, Cliby WA, Dowdy SC, Bakkum-Gamez JN, Soslow RA, Keeney GL, Abu-Rustum NR, Mariani A, Leitao Jr MM. Comparison of a sentinel lymph node mapping algorithm and a comprehensive lymphadenectomy for the detection of stage IIIC disease in endometrial carcinomas at higher risk for nodal disease. Gynecol Oncol 2017;147:541-548.
Eriksson AGZ, Graul A, Yu MC, Halko A, Chi DS, Zivanovic O, Gardner GJ, Sonoda Y, Barakat RR, Abu-Rustum NR, Leitao Jr MM. Minimal access surgery compared to laparotomy for secondary surgical cytoreduction in patients with recurrent ovarian carcinoma: perioperative and oncologic outcomes. Gynecol Oncol 2017;146:263-267.
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.
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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, 2021 through disclosure submission in spring 2022). This data reflects interests that may or may not still exist. This data is updated annually.