Sonia Mahajan, MD

Nuclear Medicine Physician

Titles

Assistant Attending Radiologist

Clinical Expertise

Molecular Imaging using PET/CT, SPECT/CT, and Gamma Camera; Nuclear Cardiology and Cardiac Sarcoidosis PET Imaging; Theranostics

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Mon–Fri, 8:00 a.m.–6:00 p.m., (Eastern time)
Accepted Insurance Providers

Dr. Mahajan 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

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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

MBBS, Maulana Azad Medical College

Residencies

Nuclear Medicine, Memorial Sloan Kettering Cancer Center; Nuclear Medicine, Institute of Nuclear Medicine and Allied Sciences

Fellowships

Molecular Imaging, Sloan Kettering Institute for Cancer Research

Board Certifications

Nuclear Medicine

I am a board-certified nuclear medicine physician with expertise in gamma imaging, positron emission tomography (PET)/computed tomography (CT), nuclear cardiology, and radionuclide therapies. What compelled me to the field of nuclear medicine is its focus on the functional aspect of imaging with an emphasis on processes that happen at the cellular and molecular level. Another unique advantage of nuclear medicine in oncology is that it is possible to not only evaluate tumor spread using radiopharmaceuticals, but also to use them for cancer therapy (theranostics).

Earlier in my career, I worked as an attending in various cancer care hospitals in New Delhi, India, where I gained invaluable experience in several aspects of the field. My training and research at Memorial Sloan Kettering Cancer Center (MSK) and Columbia University further expanded my perspective in image analysis, coordinated patient care, and collaborations with different clinical specialties. Working with the pioneers in my field at MSK and continuously learning new innovations in advanced imaging has been especially rewarding. I feel passionately about my work as a radiologist on the Molecular Imaging and Therapy Service and aim to provide the best patient care.

I have a diverse research profile centered on the use of metabolic imaging and new radiopharmaceuticals in thyroid cancer, skin malignancies, and rare cancers, with a focus on diagnosis, restaging, and treatment response at various stages. As a member of the thyroid and gynecologic oncology disease management teams at MSK, I work closely with other physicians and clinician-scientists to provide excellent quality care to our patients.

Awards and Honors

  • Roentgen Resident/Fellow Research Award, Radiological Society of North America
  • ACNM Editorial Fellowship Award, Education and Research Foundation for Nuclear Medicine and Molecular Imaging
  • Brig. S.K. Mazumdar’s Best DRM Student Award, Institute of Nuclear Medicine & Allied Sciences

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 Molecular Imaging and Therapy Service doctors

Clinical Trials

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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.

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Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Mahajan’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