Stephanie Downs-Canner

Stephanie Downs-Canner, MD



Assistant Attending

Clinical Expertise

Breast Disease


New Patient Appointments

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

Dr. Downs-Canner 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.

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.


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.

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.

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. 


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.


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.

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.


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.


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

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.


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.


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

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


General Surgery, University of Pittsburgh Medical Center


General Surgery - University of Pittsburgh Medical Center


Breast Surgical Oncology - Memorial Sloan Kettering Cancer Center

Board Certifications

American Board of Surgery

I specialize in providing surgical care for all types of breast cancer, with a focus on minimizing side effects and lessening procedural impact on patient quality of life through careful, multidisciplinary treatment planning with my colleagues in medical oncology, radiation oncology, and plastic surgery. I have experience using innovative surgical techniques such as oncoplastic surgery — which refers to traditional breast cancer surgery used to remove the cancerous tissue, followed by reconstructive surgery — and nipple-sparing mastectomy.

Read more

Many patients I see are concerned about the cosmetic or psychosocial aspects of surgical treatment for breast cancer. I take the time to understand my patients’ goals and expectations for their surgical treatment to offer the care that not only gets them the best possible outcome but also corresponds to their individual needs and preferences. Understandably, patients are often concerned about recurrence (cancer coming back after treatment) and want to know what they can do to prevent this from happening. I speak honestly with my patients, educate them on the evidence-based treatment options that would be best for them, and involve them in the decision-making process to choose a treatment plan that most closely aligns with their values.

In the simplest sense, I entered the field of oncology so I could help people through a really challenging time. Being the family member of a woman with breast cancer helped me to understand what it feels like to go through the breast cancer treatment journey with someone who has received a diagnosis of breast cancer. I bring this perspective into each of my patient interactions. 

I am actively involved in research to improve our understanding of how we can manipulate or enhance our bodies’ own immune response to better fight cancers. I am a member of Jayanta Chaudhuri’s laboratory, where my work specifically focuses on the role that a certain type of immune cell —the B cell — plays in helping (or hurting) our immune system’s ability to fight cancer. My research also studies the B-cell’s importance to the efficacy of a type of immunotherapy called checkpoint blockade. Outside of work, I love spending time outdoors with my husband, two sons, and two dogs. We enjoy hiking all over, especially in the mountains of the Hudson Valley.


Awards and Honors

  • National Institutes of Health Loan Repayment Program
  • American College of Surgeons Faculty Research Fellow
  • National Institutes of Health Paul Calabresi K12 Scholar


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.

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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

Downs-Canner S, Shaw PH. A comparison of clinical trial enrollment between adolescent and young adult (AYA) oncology patients treated at affiliated adult and pediatric oncology centers. J Pediatr Hematol Oncol. 2009 Dec;31(12):927-9. doi: 10.1097/MPH.0b013e3181b91180. PubMed PMID: 19855302.

Downs-Canner S, Bahar R, Reddy SK, Cardinal JS, Marsh JW, Geller DA, Tsung A. Indeterminate pulmonary nodules represent lung metastases in a significant portion of patients undergoing liver resection for malignancy. J Gastrointest Surg. 2012 Dec;16(12):2256-9. doi: 10.1007/s11605-012-2051-y. Epub 2012 Oct 20. PubMed PMID: 23086449.

Downs-Canner S, Bartlett DL. Regional delivery of oncolytic vaccinia virus: it’s time for clinical trials. Ann Surg Oncol. 2014 Jul;21(7):2127-8. doi: 10.1245/s10434-014-3660-3. Epub 2014 Mar 28. PubMed PMID: 24682649; PubMed Central PMCID: PMC4262111.

Zeh HJ, Downs-Canner S, McCart JA, Guo ZS, Rao UN, Ramalingam L, Thorne SH, Jones HL, Kalinski P, Wieckowski E, O’Malley ME, Daneshmand M, Hu K, Bell JC, Hwang TH, Moon A, Breitbach CJ, Kirn DH, Bartlett DL. First-in-man study of western reserve strain oncolytic vaccinia virus: safety, systemic spread, and antitumor activity. Mol Ther. 2015 Jan;23(1):202-14. doi: 10.1038/mt.2014.194. Epub 2014 Oct 8. PubMed PMID: 25292189; PubMed Central PMCID: PMC4426804.

Downs-Canner S, Van der Vliet WJ, Thoolen SJ, Boone BA, Zureikat AH, Hogg ME, Bartlett DL, Callery MP, Kent TS, Zeh HJ, Moser AJ. Robotic surgery for benign duodenal tumors. J Gastrointest Surg. 2015 Feb;19(2):306-12. doi: 10.1007/s11605-014-2668-0. Epub 2014 Oct 28. PubMed PMID: 25348238; PubMed Central PMCID: PMC4529990.

Downs-Canner S, Ding Y, Magge DR, Jones H, Ramalingam L, Zureikat A, Holtzman M, Ahrendt S, Pingpank J, Zeh HJ, Bartlett DL, Choudry HA. A comparative analysis of postoperative pancreatic fistulas after surgery with and without hyperthermic intraperitoneal chemoperfusion. Ann Surg Oncol. 2015 May;22(5):1651-7. doi: 10.1245/s10434-014-4186-4. Epub 2014 Oct 28. PubMed PMID: 25348781; PubMed Central PMCID: PMC4537169.

Downs-Canner S, Zenati M, Boone BA, Varley PR, Steve J, Hogg ME, Zureikat A, Zeh HJ, Lee KK. The indolent nature of pulmonary metastases from ductal adenocarcinoma of the pancreas. J Surg Oncol. 2015 Jul;112(1):80-5. doi: 10.1002/jso.23943. Epub 2015 Jul 7. PubMed PMID: 26153355; PubMed Central PMCID: PMC4509861.

Downs-Canner S, Magge D, Ravindranathan R, O’Malley ME, Francis L, Liu Z, Sheng Guo Z, Obermajer N, Bartlett DL. Complement Inhibition: A Novel Form of Immunotherapy for Colon Cancer. Ann Surg Oncol. 2016 Feb;23(2):655-62. doi: 10.1245/s10434-015-4778-7. Epub 2015 Aug 20. PubMed PMID: 26289805; PubMed Central PMCID: PMC5733728.

Downs-Canner S, Guo ZS, Ravindranathan R, Breitbach CJ, O’Malley ME, Jones HL, Moon A, McCart JA, Shuai Y, Zeh HJ, Bartlett DL. Phase 1 Study of Intravenous Oncolytic Poxvirus (vvDD) in Patients With Advanced Solid Cancers. Mol Ther. 2016 Aug;24(8):1492-501. doi: 10.1038/mt.2016.101. Epub 2016 May 16. PubMed PMID: 27203445; PubMed Central PMCID: PMC5023393.

Downs-Canner S, Berkey S, Delgoffe GM, Edwards RP, Curiel T, Odunsi K, Bartlett DL, Obermajer N. Suppressive IL-17A+Foxp3+ and ex-Th17 IL-17AnegFoxp3+ Treg cells are a source of tumour-associated Treg cells. Nat Commun. 2017 Mar 14;8:14649. doi: 10.1038/ncomms14649. PubMed PMID: 28290453; PubMed Central PMCID: PMC5355894.

Downs-Canner S, Shuai Y, Ramalingam L, Pingpank JF, Holtzman MP, Zeh HJ, Bartlett DL, Choudry HA. Safety and efficacy of combined resection of colorectal peritoneal and liver metastases. J Surg Res. 2017 Nov;219:194-201. doi: 10.1016/j.jss.2017.05.126. Epub 2017 Jun 29. PubMed PMID: 29078882; PubMed Central PMCID: PMC5663460.

Downs-Canner S, Zabor EC, Wind T, Cobovic A, McCormick B, Morrow M, Heerdt A. Radiation Therapy After Breast-Conserving Surgery in Women 70 Years of Age and Older: How Wisely Do We Choose?. Ann Surg Oncol. 2019 Apr;26(4):969-975. doi: 10.1245/s10434-018-07151-4. Epub 2019 Feb 8. PubMed PMID: 30737670; PubMed Central PMCID: PMC6613396.

Downs-Canner S, Heerdt A. Reply to “Downs-Canner S, Zabor EC, Wind T, Cobovic A, McCormick B, Morrow M, Heerdt A. Radiation Therapy After Breast-Conserving Surgery for Women 70 Years of Age or Older: How Wisely Do We Choose? In Regard to Downs-Canner et al.” by Hannoun-Levi, Jean Michel et al. (ASO-2019-07-1622). Ann Surg Oncol. 2019 Dec;26(Suppl 3):861-862. doi: 10.1245/s10434-019-07768-z. Epub 2019 Aug 30. PubMed PMID: 31471839.

Mamtani A, Nakhlis F, Downs-Canner S, Zabor EC, Morrow M, King TA, Van Zee KJ. Impact of Age on Locoregional and Distant Recurrence After Mastectomy for Ductal Carcinoma In Situ With or Without Microinvasion. Ann Surg Oncol. 2019 Dec;26(13):4264-4271. doi: 10.1245/s10434-019-07693-1. Epub 2019 Aug 22. PubMed PMID: 31440931; PubMed Central PMCID: PMC6868329.

Downs-Canner SM, Gaber CE, Louie RJ, Strassle PD, Gallagher KK, Muss HB, Ollila DW. Nodal positivity decreases with age in women with early-stage, hormone receptor-positive breast cancer. Cancer. 2020 Mar 15;126(6):1193-1201. doi: 10.1002/cncr.32668. Epub 2019 Dec 20. PubMed PMID: 31860136; PubMed Central PMCID: PMC7369168.

Barrio AV, Downs-Canner S, Edelweiss M, Van Zee KJ, Cody HS 3rd, Gemignani ML, Pilewskie ML, Plitas G, El-Tamer M, Kirstein L, Capko D, Patil S, Morrow M. Microscopic Extracapsular Extension in Sentinel Lymph Nodes Does Not Mandate Axillary Dissection in Z0011-Eligible Patients. Ann Surg Oncol. 2020 May;27(5):1617-1624. doi: 10.1245/s10434-019-08104-1. Epub 2019 Dec 9. PubMed PMID: 31820212; PubMed Central PMCID: PMC7145724.

Myers SP, Dasari M, Brown JB, Lumpkin ST, Neal MD, Abebe KZ, Chaumont N, Downs-Canner SM, Flanagan MR, Lee KK, Rosengart MR. Effects of Gender Bias and Stereotypes in Surgical Training: A Randomized Clinical Trial. JAMA Surg. 2020 Jul 1;155(7):552-560. doi: 10.1001/jamasurg.2020.1127. PubMed PMID: 32432669; PubMed Central PMCID: PMC7240638.

Louie RJ, Gaber CE, Strassle PD, Gallagher KK, Downs-Canner SM, Ollila DW. Trends in Surgical Axillary Management in Early Stage Breast Cancer in Elderly Women: Continued Over-Treatment. Ann Surg Oncol. 2020 Sep;27(9):3426-3433. doi: 10.1245/s10434-020-08388-8. Epub 2020 Mar 25. PubMed PMID: 32215758; PubMed Central PMCID: PMC7415703.

Portelli Tremont JN, Downs-Canner S, Maduekwe U. Delving deeper into disparity: The impact of health literacy on the surgical care of breast cancer patients. Am J Surg. 2020 Oct;220(4):806-810. doi: 10.1016/j.amjsurg.2020.05.009. Epub 2020 May 12. Review. PubMed PMID: 32444064; PubMed Central PMCID: PMC7541468.

Aubry S, Strassle PD, Maduekwe U, Downs-Canner S. Disparities of Management of the Axilla in Women With Clinically Node Negative Breast Cancer. J Surg Res. 2020 Dec;256:13-22. doi: 10.1016/j.jss.2020.05.100. Epub 2020 Jul 14. PubMed PMID: 32679224; PubMed Central PMCID: PMC8353960.

Myers SP, Downs-Canner SM, Rosengart MR. Training in Surgery-Reply. JAMA Surg. 2021 Jan 1;156(1):103. doi: 10.1001/jamasurg.2020.4388. PubMed PMID: 33084887.

Grova MM, Strassle PD, Navajas EE, Gallagher KK, Ollila DW, Downs-Canner SM, Spanheimer PM. The Prognostic Value of Axillary Staging Following Neoadjuvant Chemotherapy in Inflammatory Breast Cancer. Ann Surg Oncol. 2021 Apr;28(4):2182-2190. doi: 10.1245/s10434-020-09152-8. Epub 2020 Sep 24. PubMed PMID: 32974693; PubMed Central PMCID: PMC8269452.

Myers SP, Tzeng E, Downs-Canner SM. Addressing the Challenges Faced by Female Surgical Trainees Who Have Children During Protected Academic Periods. JAMA Surg. 2021 Apr 14;. doi: 10.1001/jamasurg.2021.0583. [Epub ahead of print] PubMed PMID: 33852007.

Johnson JE, Strassle PD, de Oliveira GC, Agala CB, Spanheimer P, Gallagher K, Ollila D, Muss H, Downs-Canner S. Suboptimal therapy following breast conserving surgery in triple-negative and HER2-positive breast cancer patients. Breast Cancer Res Treat. 2021 Sep;189(2):509-520. doi: 10.1007/s10549-021-06303-7. Epub 2021 Jun 26. PubMed PMID: 34176085; PubMed Central PMCID: PMC8363582.

Iles K, Strassle PD, Agala CB, Button J, Downs-Canner S. Surgical Axillary Staging Before Neoadjuvant Chemotherapy: Who Gets It and Why We Should Avoid It. Ann Surg Oncol. 2021 Oct;28(10):5788-5797. doi: 10.1245/s10434-021-10628-4. Epub 2021 Aug 11. PubMed PMID: 34379251; PubMed Central PMCID: PMC8620142.

Publications on PubMed

Visit PubMed for a full listing of Dr. Downs-Canner’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