Dr. Denis Knobel joins the Friedman Center with a passion for cutting-edge technology in oncologic surgery. He’s a board-certified plastic surgeon who focuses on the highest quality aesthetics in breast reconstruction.

Dr. Knobel believes that plastic surgery is crucial to recovery for cancer patients, helping minimize the physical effects of their cancer after surgery. He views the future of breast reconstruction as both having the technical knowledge to perform complex procedures like the DIEP flap and the ability to reconstruct the breast to its ideal aesthetic form.

A firm believer in giving back, Dr. Knobel also donates his time and expertise as a volunteer. He’s an avid supporter and visiting physician for the Medical Mission for Children in Quito, Ecuador.

“Dr. Knobel was very knowledgeable. He took his time explaining what I needed to understand. I would highly recommend Dr. Knobel & his staff.”


  • Post-Doctoral Fellowship in Wound Healing Research, Institute of Reconstructive Plastic Surgery
  • Research Fellowship in General Surgery, North Shore LIJ
  • Fellowship in Microsurgery, New York University Medical Center
  • Residency in Plastic Surgery, Northwell Health
  • Residency in General Surgery, Northwell Health
  • MD, Albany Medical College
  • BA in Chemistry, CUNY Brooklyn College

Honors & Awards

  • Awarded Research grant for two years from New York State for Research project: “Surgical continuum of care – A novel model for patient safety.”
  • Young Investigator Award, Wound Healing Society
  • Biotechnology Foundation Travel Award, Wound Healing SocietyAO Foundation
  • Craniomaxillofacial Grant; Clinical and Translational Science Grant
  • Golden Key National Honor Society
  • American Chemical Society’s Award
  • Brooklyn College Science Research Day

Jessica Schenfeld

Jessica is a Physician’s Assistant (PA) for Dr. Denis Knobel at the Friedman Center. She loves working with breast cancer patients and supporting the rewarding results of restoring patient’s self-confidence. She creates and maintains an open line of communication with patients and is proactive in their care. Jessica enjoys working out, activities outdoors in nature, and spending time with family.

Monica Pineda

Monica has been working with Dr. Denis Knobel since 2018. She loves helping women through the entire patient journey. Monica knows that even small acts can make a difference in a patient’s day. She helps schedule patient surgeries and appointments, coordinate external resources, and answer any questions. When she’s not at the office, Monica enjoys nature walks, cooking, and spending time with her family.