We pioneered diagnostic and surgical techniques that are considered standards worldwide in treating colorectal cancer and other disorders. Our practice is recognized internationally for ground-breaking colon and rectal surgery.

Our original multi-specialty approaches to rectal cancer are designed to offer the broadest spectrum of treatment options aimed at preserving normal function and avoiding a bag. We are the only colorectal surgeons in the tri-state area participating in a high-priority National Cancer Institute study treating colon cancer with laparoscopic or keyhole surgery.

We're here with expert care, innovative treatment, compassion and understanding when you need us. We want to change colorectal cancer from the unmentionable to preventable disease.

Office Hours:
By Appointment*

TUES: Noon to 5:00 PM
FRI: 9:00 AM to 5:00 PM

Office Address:
Medical Office Building West
Suite 330
100 Lancaster Avenue 
Wynnewood, PA 19096 
Phone: (610) 645-9093 
Fax: (610) 645-9476

 


 
*Patients with acute problems and emergencies are seen with around-the-clock availability

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Gerald J. Marks, M.D., FACS, FASCRS
Board Certified, American Board of Colon and Rectal Surgery and American Board of Surgery
John H. Marks, M.D., FACS, FASCRS
Board Certified, American Board of Colon and Rectal Surgery and American Board of Surgery
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International Network of Comprehensive Rectal Cancer Centers
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