Giacomo Montagna, MD, MPH

Breast Surgeon

Clinical Expertise

Breast Cancer; Benign Breast Diseases

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New Patient Appointments

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Mon–Fri,
Accepted Insurance Providers

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

Aetna

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.

Blue Distinction Center

Memorial Sloan Kettering is a designated Blue Distinction Center for bone marrow transplant and CAR-T.

Health Insurance Exchanges

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.

CIGNA

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.
EmblemHealth (including GHI, HIP, ConnectiCare, and Vytra)

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

Empire Blue Cross Blue Shield

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.
HealthFirst

Memorial Sloan Kettering is an in-network provider with HealthFirst’s commercial products; these commercial products are not purchased on the insurance exchanges.

HealthSmart

Memorial Sloan Kettering is an in-network provider with HealthSmart’s Accel, HSPC, and HPO networks.

Horizon Blue Cross Blue Shield of New Jersey

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. 

Humana

Memorial Sloan Kettering is a designated Center of Excellence by Humana.

Interlink Health Services

Memorial Sloan Kettering is a designated Center of Excellence by Interlink Health Services.

Lifetrac

Memorial Sloan Kettering is a designated Center of Excellence by Lifetrac.

MagnaCare

Memorial Sloan Kettering is an in-network provider for all MagnaCare health plans except those products you can buy through the insurance exchanges.

Medicare & Medicaid

For information about Medicare and Medicaid, please visit this page

Multiplan/Beech Street/PHCS

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.

Multiple Insurance Plans

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.

MVP

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.

New York State Employee Health Insurance Plan (Empire Plan)

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.

Oscar

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. 

Other Blue Cross Blue Shield plans

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.

Other Coverage Options

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
Oxford

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.

World Trade Center Health Program

Memorial Sloan Kettering is an in-network provider with the World Trade Center Health Program.

QualCare

Memorial Sloan Kettering is an in-network provider with QualCare's PPO and HMO/POS network.

Specialty Care Management

Memorial Sloan Kettering is a designated Center of Excellence by Specialty Care Management.

TRICARE

Hospital and physician services may be covered by TRICARE. Please call your TRICARE plan to confirm coverage at Memorial Sloan Kettering.

UnitedHealthcare

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

Locations map
Find a Convenient 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.

See all locations

About Me

Education

MD, University of Lausanne, Switzerland; MPH, Harvard T.H. Chan School of Public Health, Boston, MA

Residencies

Obstetrics and Gynecology - Ente Ospedaliero Cantonale, Lugano, Switzerland and University Hospital of Basel, Switzerland

Fellowships

Breast Surgery - University Hospital of Basel, Switzerland; Clinical Research - Memorial Sloan Kettering Cancer Center, NY, USA; Breast Surgical Oncology - Memorial Sloan Kettering Cancer Center, NY, USA

Board Certifications

Obstetrics and Gynecology (Switzerland)

I am a breast surgical oncologist who specializes in the treatment of benign and malignant breast diseases. I have a particular clinical and research interest in rare types of breast cancer, such as metaplastic breast cancer. I perform all types of breast and axillary surgery and I have specific training in oncoplastic breast surgery (both nipple sparing mastectomy and breast conservation techniques). I see patients at Memorial Sloan Kettering Cancer Center’s Evelyn H. Lauder Center in New York City and at MSK Bergen. I work in a multidisciplinary team that includes colleagues from radiology, pathology, plastic surgery, medical oncology and radiation oncology. Our goal is to deliver the highest quality of care by making a cohesive treatment plan tailored to our patients, their disease and their needs.

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.

See all Breast Service doctors

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. Montagna’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