Penn Metabolic & Bariatric Surgery Program

Roux-en-Y Gastric Bypass

Team of Physicians and Staff

  • Megan Abbott, MSN, CRNP
  • Vince Benchino, RD
  • Karen Buzby, RD, LDN
  • Raymond Carvajal, MA
  • Amy I. Cha, MD, FACS
  • B. Karen Coyne, MSN, CRNP
  • Theresa David, MSN, RN
  • Daniel T. Dempsey, MD
  • Lynn Engler, MSN, CRNP
  • Sandra Feeny, BS, RN
  • Katie Foster-Kilgarriff, MSN, CRNP
  • Rachel Griehs, MS, RD, LDN
  • Peggy Hubert, RN, MSN, OCN
  • Gary Korus, MD, FACS
  • Carmela Mantis, MHA, RN
  • Marie McIntyre, MSN, CRNP
  • Madelyn Melendez, MA
  • Mary O’Neill, MSN, CRNP
  • Kimberly Pavan, MSN, CRNP-BC
  • Staci Pietrafesa, RN, BSN, NE-BC
  • Cara Stewart, RD, LDN
  • Robin Stott-McNulty, MSPT
  • Samantha Warner-Grimsley, AD, RN, CBN

Affiliation Key

Unless otherwise indicated, all providers listed are employed by or contracted through the University of Pennsylvania Health System.

Independent Physician icon Independent: Private practice physician who is not employed by the University of Pennsylvania Health System (UPHS) and may or may not have privileges to treat patients at a UPHS hospital.
Sub-specialty network provider icon Sub-Specialty Network: Private practice physician who is affiliated with UPHS, but is not an employee of UPHS and may or may not be on the medical staff of a UPHS hospital.
CHOP Provider icon CHOP: Physician affiliated with the Children's Hospital of Philadelphia.