Dr. Joseph Treat, Internist, Medical Oncologist

Joseph Treat M.D.

Internist, Medical Oncologist

About Joseph Treat

While some mesothelioma doctors spend much of their careers treating other thoracic illnesses such as esophageal cancer, Joseph Treat, M.D. dedicates his entire practice to mesothelioma and lung cancer patients.

Get in touch


Pleural and Lung Cancer icon

Pleural and Lung Cancer

Research Excellence icon

Excellence in Research

20+ Years of Experience icon

20+ Years of Experience

Gene Therapy icon

Gene Therapy

For more than 20 years, Treat has been exclusively treating these patients. In 1999 he was hired at Fox Chase Cancer Center to contribute to their mesothelioma team. At Fox chase, patients benefit from stage-specific treatment plans that incorporate tailored surgery and adjuvant treatments such as radiation therapy and chemotherapy. In light of the findings of current research, Fox Chase physicians strive to combine these treatments whenever a patient can safely complete the combined regimen. This approach has been shown to increase survival rate among mesothelioma patients, although it is Fox Chase’s policy to use the treatments alone if necessary.

More About

Joseph Treat M.D.


Medical Surgery

Medical Treatment Center

Fox Chase Cancer Center


Get in touch

Treat’s expertise is bolstered by his extensive research with chemotherapeutic drugs. Since 2003 he has written about his laboratory findings with medications such as pemetrexed and cisplatin.

Clinical Trials and Genetic Research

He has led several National Cancer Institute-sponsored clinical trials at Fox Chase, including an ongoing phase III study of directed customized chemotherapy for non-small cell lung cancer patients. Although most of his articles have discussed the effects of these drugs on lung cancer, these medicines are considered some of the most effective chemotherapeutic drugs for mesothelioma patients.

Talk to a Doctor About Your Diagnosis

We can help you or a loved one get in contact with Dr. Treat and find the treatment that's best for you.

Get Started Today

Treat has also been involved with genetic research for the treatment of mesothelioma. In 1996 he lead a team of researchers at the University of Pennsylvania to discover how advanced cases of mesothelioma responded to a genetically altered copy of the adenovirus. The study established a maximum dose of the virus that mesothelioma patients could tolerate and a response rate to the therapy. Treat’s project also evaluated the biological side effects that were associated with a genetically-altered virus injection.

Quick Fact

Dr. Treat is a consulting physician for the pharmaceutical development company Neopham.

While Treat’s post-graduate training in internal medicine and medical oncology qualify him to adeptly handle the medical side of the mesothelioma cases, he often recommends that his patients also visit other physicians to round out their treatment. Treat often directs surgical candidates to his colleagues with expertise in video and robot-assisted surgery. He also refers interested patients to other branches of Fox Chase Cancer Center that can offer innovative treatment to mesothelioma patients, including the photodynamic therapy department or the stereotactic radiotherapy department.

In recognition of his skill and tireless work at the cancer center, Treat was named the vice-chairman of the Department of Medical Oncology. He was also elected one of Philadelphia Magazine’s 24 “Top Docs 2002.” He maintains active certifications with the American Board of Internal Medicine.


Treat has written 19 articles for scholarly journals, including many reviews of popular chemotherapeutic drugs used to treat lung cancer. Much of his writing analyzes the effects of pemetrexed, paclitaxel, carboplatin and gemcitabine.

Disclaimer: Dr. Joseph Treat has no professional affiliation with Asbestos.com.

Locate the Best Mesothelioma Doctor for You

Find a Specialist
Asbestos.com Mesothelioma Packet

Learn All About Mesothelioma Treatment

Order Your Free Guide

Find a Clinical Trial Near You

Get Help Now

Did this article help you?

Did this article help you?

Thank you for your feedback. Would you like to speak with a Patient Advocate?

Tim Povtak, Senior Content Writer at Asbestos.com

Tim Povtak is an award-winning writer with more than 30 years of reporting national and international news. His specialty is interviewing top mesothelioma specialists and researchers, reporting the latest news at mesothelioma cancer centers and talking with survivors and caregivers. Read More

Last Modified March 1, 2018
  1. Fox Chase Cancer Center. Why Fox Chase is Among Best Lung Cancer Treatment Centers. (2011). Retrieved from: http://www.fccc.edu/cancer/types/lung/lung_cancer_experts.html
  2. Fox Chase Cancer Center Physicians: Joseph Treat, MD. (2011). Retrieved from: http://www.fccc.edu/physicians/medical/treat.html
  3. Fox Chase Doctors Ranked at Top. (2002, May 8). Retrieved from Retrieved from: http://fccc.edu/news/2002/TopDocs-05-10-2002.html
  4. Fox Chase Cancer Center Learn About Cancer: Mesothelioma. Mesothelioma Treatment Options. (2011). Retrieved from: http://www.fccc.edu/cancer/types/lung/mesothelioma.html
Joseph Treat
Get Help Contacting Joseph Treat
Get Your Free Mesothelioma Guide Chat live with a patient advocate now loading spinner