Breast Surgery

Dr. David Mangiameli is a respected board-certified surgical oncologist. His dedicated expertise focuses on enhanced screening for high-risk patients, minimally invasive breast surgery, oncoplastic surgery, and customization of surgery for cancer in women who are universally and intrinsically unique. Dr. Mangiameli feels that there is a wide spectrum of options that lie between lumpectomy and mastectomy. Cancer removal is first and foremost; however, there are commonly more than just two surgical options.

Dr. Mangiameli is adamantly patient-centric. Subsequently, he practices evidence- based medicine with a comprehensive team that includes: medical oncologists, radiation oncologists, plastic surgeons, pathologists, and fellowship-trained women’s imagers (radiologists). All cancer patients are discussed at conferences attended by these cancer specialists. There are multiple cancer specialists involved simultaneously and from the beginning. This is why cancer center accreditation is so critical. This level of team involvement is what is required. Dr. Mangiameli’s program is the only accredited cancer center from Patchogue to Montauk and Orient. He has offices in Patchogue, Southampton, and Riverhead. Every site visit of Dr. Mangiameli’s team since 2014 by the American College of Surgeons has resulted in a perfect full accreditation.

Dr. Mangiameli performs all forms of breast and chest wall surgery. This includes minimally invasive breast surgery, complex oncoplastic surgery, chest wall resections and reconstruction, nipple-sparing and traditional mastectomies, sentinel lymph node mapping and biopsy, and full lymph node dissections. Additionally, he collaborates with his plastic surgery colleagues to achieve immediate reconstruction using implants and all forms of autologous flap reconstruction. In addition, he has extensive training and experience in screening and managing women who have high breast cancer risk from genetic mutations and other cumulative risk factors.

He has been a founding program director of a breast cancer center here in Suffolk County since 2014. Dr. Mangiameli has continuously provided the energy and leadership to compel and coordinate these clinical teams. Together they have treated thousands of women according to national guidelines. Additionally, he has been involved in many community outreach programs, including the NYS Cancer Screening Program. He also serves as a Police Surgeon for The New York State Troopers and the Police Surgeons Benevolent Association.

Dr. Mangiameli completed general surgery/trauma residency at The Brooklyn Hospital Center. He additionally completed a fellowship in Surgical Oncology at the National Institutes of Health, National Cancer Institute; a fellowship in Immunotherapy for Cancer also at the National Cancer Institute; and served as the SSO Fellow in Oncoplastic and Oncologic Breast Surgery at Columbia Presbyterian, College of Physicians and Surgeons, in NY.

Dr. Mangiameli has authored clinical and scientific textbook chapters, as well as peer-reviewed journal articles for his original work in genomics and small molecule drug analysis. Additionally, he administered clinical trials at the NIH and is a patent holder.

Dr. Mangiameli is foremost a father of two and also a musician and outdoors sportsman.

Dr Mangiameli has recently fostered a Surgical Mission in Ghana, a significant endeavor that underscores his commitment to global healthcare, which you can read more about in our Newsletter here

Credentials:  DO
Education & Training
   Residency:    The Brooklyn Hospital Center


Patient Reviews

  • "Everyone was super kind and assuring. I left feeling very positive that I chose the right doctor and office for my future procedures."
      from Gail 5.0 Stars - (2024-09-13)
  • "Staff is great, dr great. Always easy and quick."
      from Kerrie 5.0 Stars - (2024-09-13)
  • "The office staff is courteous and friendly. The doctors are kind and willing to spend the time to get to know you."
      from Gina 5.0 Stars - (2024-09-12)
  • "Dr Mangiameli is amazing. Hidra (so sorry if I spelled it wrong but I can’t leave her out) she’s also amazing. Even patty at the front desk is amazing. The way he cared and explains everything and add the most perfect bed side manner he will be my breast doctor forever. I was petrified with what happened to me and let’s just say he saved my boob. I trust this office so much that I am bringing my daughter there to see him for her problem. Thank you guys so much."
      from Marie 5.0 Stars - (2024-09-11)
  • "I always feel welcome and comfortable in this office. Everyone has one thing in common - your health and well-being. You cannot ask for more then that."
      from Regina 5.0 Stars - (2024-09-08)
  • "Hilger was the physician assistant who took care of me… I asked Hilger Some questions about some of my concerns and she was very confident in her answers…I felt relieved at what she said…Hilger is very knowledgeable and understanding, she listens and cares for her patients very much! I will continue to ask for Hilger when I make my appointment’s! She is great!"
      from Elizabeth 5.0 Stars - (2024-09-08)
  • "(Translated by Google) Excellent doctor🧑‍⚕️I am very satisfied (Original) Excelente doctor🧑‍⚕️estoy muy satisfecha"
      from Norma 5.0 Stars - (2024-09-07)
  • "(Translated by Google) Love Doctor Eat them (Original) Love Doctor Mangiameli"
      from Nancy 5.0 Stars - (2024-09-04)
  • "Thank you for everybody there"
      from Mohamed 5.0 Stars - (2024-08-31)
  • "Great bedside manner!"
      from Renee 5.0 Stars - (2024-08-30)