Elias Obeid, MD, MPH

Elias Obeid, MD, MPH

Clinical Locations

Primary Location

Fox Chase Cancer Center
333 Cottman Avenue
Philadelphia, PA 19111


Interim Chief, Division of Breast Medical Oncology

Assistant Professor, Department of Clinical Genetics

Director, Breast, Ovarian, and Prostate Cancer Risk Assessment

Treatment Focus

Breast Cancer Treatment: particular interest in the treatment of triple-negative and hereditary breast cancers; Breast, Ovary, and Prostate Cancer Risk Assessment

Research Program

Treatment Philosophy

My philosophy in taking care of my patients is to spend as much time as possible listening to them. This allows me to know exactly what their fears and concerns are. I believe in working with our patients as a team to design the best plan of care for them,  and when appropriate for their families if we identify a susceptibility to developing cancer in that family.

Education and Training

Educational Background

  • MPH, University of Massachusetts, Amherst, Massachusetts, 2011
  • MD, American University of Beirut School of Medicine, Beirut, Lebanon, 2000


  • Board Certified in Medical Oncology
  • Board Certified in Internal Medicine
  • Board Eligible in Hematology
  • Pennsylvania Medical License


  • American College of Physicians (Fellow)
  • Honor Society of Phi Kappa Phi
  • American Society of Clinical Oncology
  • American Association for Cancer Research (AACR)

Honors & Awards

  • Main Line Today Top Doctors, 2019
  • Abbott-Gonzalez Research Fellow Award, University of Chicago, 2012
  • American College of Physicians - Connecticut (ACP-CT) Award for Volunteerism/Judge Research Awards, 2008
  • First Annual Award: Service for Mission, Hospital of Saint Raphael, New Haven, CT, 2008
Patient Stories

Maria Francomacaro

Breast Cancer

Maria Francomacaro

Breast Cancer

My name is Maria and I’m a breast cancer survivor.

Tracy Gatto

Breast Cancer

Tracy Gatto

Breast Cancer

In 2011 at the age of 28, Tracy Gatto learned she had breast cancer after she discovered a lump in her breast. She sought a second opinion from a specialist at Fox Chase Cancer Center and immediately felt that was where she wanted to seek treatment. Tracy underwent chemotherapy, followed by surgery and reconstruction. Because of the BRCA1 genetic mutuation she most likely inherited from her father, Tracy had increased risk of ovarian cancer. She worked with the Risk Assessment Program, where she was referred to a surgical gynecologist to discuss the possibility of undergoing a prophylactic oophorectomy to remove her ovaries. Today, Tracy is doing well and even took part in Paws for the Cause, an annual dog walk and fundraiser hosted by Fox Chase, to give back. "It really takes a special person to work at Fox Chase. Everyone I met had a smile on their face and was incredibly positive," she said. "As a receptionist, I knew it can be a struggle to stay positive all day long. It’s hard to make cancer a positive experience, but I never left feeling discouraged."

Research Profile

Research Program

Research Interests

  • Genetic predisposition to breast cancer and ovarian cancer
  • Genetic predisposition to prostate cancer
  • Breast cancer: novel therapeutic interventions to improve outcomes for women with breast cancer and understanding the biology of the disease; immunotherapy

Lab Overview

The Risk Assessment Program at Fox Chase looks at your personal and possible inherited genetic factors that may put patients at higher possibility for getting cancer.  Our team comprehensively examines the risk of an individual for different cancer types, including — but not limited to — breast cancer, ovarian cancer, gastrointestinal cancers, prostate cancer, and melanoma. Such information is helpful in order to understand the chances of getting cancer and decrease the likelihood of cancer or to detect cancer early. The Department of Clinical Genetics is built on the success of Fox Chase's Margaret Dyson Family Risk Assessment Program (now Risk Assessment Program), which Dr. Mary Daly began in 1991. A high-risk screening clinic was developed for individuals with a family history of breast or ovarian cancer.

As a member of the Breast Cancer Research team at Fox Chase, we offer our patients emerging therapies for breast cancer where patients have the opportunity to enroll in national clinical trials unique to Fox Chase that target breast cancer. I am interested in the design and implementation of trials focused on the development of those new therapies. In collaboration with other scientists, we work on understanding the biology of breast cancer through translational studies. My particular interest is in tumor microenvironment and immunotherapy.

Lab Staff

Susan Montgomery, BSN, RN, GCN, OCN


Lisa Bealin, BS

Project Manager


Additional Publications




Our Patient Satisfaction Rating is an average of all responses to care provider related questions from our nationally-recognized Press Ganey Patient Satisfaction Survey. Learn more.


4.9 / 5.0


  • 4.9
  • 4.9
  • 4.9
  • 4.9
  • 4.8


  • 5.0
    March 26, 2022
    I Absolutely Love My Healthcare Team!!!! Dr. Obeid is THE BEST!!!!!!!
  • 5.0
    March 07, 2022
    Always a positive experience
  • 5.0
    February 01, 2022
    Always handled well with respect
  • 5.0
    August 14, 2021
  • 5.0
    July 27, 2021
    It was a very good experience.
  • 5.0
    July 24, 2021
    Dr Obeid is my Oncologist and this visit was an Annual follow-up from Breast Surgery. [...] If anything goes wrong with my breast, then I would get in touch with Dr Obeid. I find Dr Obeid extremely smart and like his manner.
  • 5.0
    July 23, 2021
    Comprehensive, caring and insightful experience. Prudent suggestions made for my future care.
  • No Star Ratings Available March 10, 2021
    Dr. Obeid is a wonderful doctor who takes excellent care of his patience. He treats the whole patient. He checks in and remembers things you may have said in passing years ago to help you.
  • 5.0
    March 09, 2021
    I love Dr. Obeid - thorough, attentive, compassionate.
  • 4.4
    February 16, 2021
    I had first appointment at 9am- dr didn't come in until 10am waiting for 1 hour in the appointment room. no apologies not respect for my time or the time I was waiting.

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