Our Physicians

An introduction to our expert physicians.

   > Wendy J. Marshall, M.D., F.A.C.S.

Specializing in all aspects of general surgery and pediatric surgery, with particular interest in trauma surgery, critical care medicine, and breast diseases and breast cancer.

   > Dr. Marius J. Katilius, M.D.

Specializing in all aspects of general surgery, with particular interest in trauma and critical, surgical oncology, and gastrointestinal diseases.

   > Mary E. Keller, M.D.

Specializing in general surgery, trauma surgery and critical care medicine.

   > Simon L. Knopf, M.D.

Specializing in all aspects of general surgery, trauma surgery and critical care medicine.

   > Linh O’Connor, M.D.

Specializing in all aspects of general surgery, trauma surgery, and critical care medicine.

   > Jonathan C. Wu, M.D.

Specializing in all aspects of general surgery, trauma surgery, and critical care medicine.

Experts in General Surgery &
Pediatric Surgery

Information on expert surgical treatment of many diseases such as Cancer (breast, colon, soft tissue, endocrine), Biliary tract, Hernias, Hepatic/Pancreatic disease, and more.

Experts in Trauma Surgery &
Critical Care Medicine

Experts in trauma surgery and critical care, and experience in the surgical treatment of patients with severe injuries, as well as care throughout their long-term recovery.

Experts in Breast Care

A special commitment to the treatment of breast diseases and breast cancer.

High Risk Genetic Clinic

Hereditary risk assessment and genetic testing for hereditary breast and ovarian cancer, as well as hereditary colorectal and endometrial cancer.

Patient Information

Information on office hours, appointments, refills, insurance and billing.

Office Locations

Find an office near you.

Hospital Affiliations

See the list of hospitals our physicians are on staff.

Contact Us

Contact us with questions or concerns.

Useful Links

Links to other related sites.