Henry P. Schoonyoung, MD

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Practice Philosophy

At Marks Colorectal Surgical Associates, we practice tomorrow’s medicine today, and are committed to a multidisciplinary, compassionate, and collaborative mode of care that puts our patients first. We are advancing colorectal surgery and care in ways that have, and will continue to, lead standards of care for colorectal cancer treatment on an international level, and our surgeons are pioneers in laparoscopic and robot-assisted colorectal procedures which reduce pain, blood loss and recovery time, as well as help patients preserve normal function and avoid colostomy bags.

Practice Name
Marks Colorectal Surgical Associates
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This doctor is employed by Main Line HealthCare, the multispecialty physician network of Main Line Health, including more than 350 community and hospital-based physicians.

Locations and Appointments

Lankenau Medical Science Bldg, Suite 375
100 East Lancaster Avenue
Wynnewood, PA 19096
  • Phone: 610.645.9093
  • Fax: 610.645.9476
  • 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 Henry P. Schoonyoung, MD

  • Years of Experience: 6
  • Language: English


Medical school
  • Ross University School of Medicine
  • Lankenau Medical Center
  • Florida Hospital of East Orlando

*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
  • American Society of Colon and Rectal Surgeons
  • Society of American Gastrointestinal Endoscopic Surgeons (SAGES)
  • Associate Fellow, American College of Surgeons

Patient Satisfaction Ratings and Comments