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Marisa C. Weiss, MD

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Locations and Appointments

Lankenau Cancer Center
100 East Lancaster Avenue
Wynnewood, PA 19096
  • Phone: 484.476.2433
  • Fax: 484.476.3595
  • Accessibility: Public Transportation

Do you have questions or are you looking for help in choosing the right provider?

Call 1.866.CALL.MLH (1.866.225.5654), Monday through Friday between 8:00 am–6:00 pm ET, to speak with a member of our referral staff who can help find the doctor who is right for you.

About Marisa C. Weiss, MD

Marisa Weiss, MD, is one of the country’s foremost authorities on breast cancer prevention, diagnosis and treatment. As Director of Breast Radiation Oncology and Breast Health Outreach at Lankenau Medical Center and Founder and President of Breastcancer.org, she is dedicated to providing women with smart, in-depth, understandable, and reliable information about how to get the best care possible.

  • Language: English
Specialties Accepting New Patients
Radiation Oncology Board certified since 1988
Primary Affiliation
Primary Treatments
Academic Titles
  • Thomas Jefferson University Hospital
Clinical Titles
  • Attending Physician


Medical school
  • University of Pennsylvania Medical Center
  • Hospital of the University of Pennsylvania
  • Univ. of Pennsylvania Graduate

*Members of the Main Line Health medical staff are affiliated with Bryn Mawr Hospital, Lankenau Medical Center, Paoli Hospital and Riddle Hospital. Membership on the medical staff of any of our hospitals does not constitute an employment or agency relationship.

Awards & Memberships

Current Membership & Activities
  • Living Beyond Breast Cancer
  • National Breast Cancer Coalition
  • Philadelphia Wellness Community
  • American Cancer Society, Chester County Division
  • American Society for Therapeutic Radiology and Oncology

Patient Satisfaction Ratings and Comments