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Office
3401 Civic Center Blvd
Philadelphia, PA 19104Phone+1 215-590-1000Fax+1 215-590-3265
Education & Training
- Cincinnati Children's Hospital Medical CenterFellowship, Pediatric Surgery, 1996 - 1998
- Johns Hopkins UniversityResidency, Surgery, 1989 - 1996
- Harvard Medical SchoolClass of 1989
Certifications & Licensure
- PA State Medical License 1998 - 2026
- DE State Medical License 1998 - 2025
- NJ State Medical License 1998 - 2025
- OH State Medical License 1996 - 1998
- MD State Medical License 1992 - 1995
- American Board of Surgery Surgery
- American Board of Surgery Pediatric Surgery
Awards, Honors, & Recognition
- Fellow (FACS) American College of Surgeons
Publications & Presentations
PubMed
- Evaluation of Image-Defined Risk Factor (IDRF) Assessment in Patients With Intermediate-risk Neuroblastoma: A Report From the Children's Oncology Group Study ANBL0531.Erin G Brown, E Stanton Adkins, Peter Mattei, Fredric A Hoffer, Sandra L Wootton-Gorges
Journal of Pediatric Surgery. 2025-01-01 - Laparoscopic Versus Open Ladd Procedure for Midgut Malrotation.William R Johnston, Rosa Hwang, Peter Mattei
Journal of Pediatric Surgery. 2024-12-01 - Postoperative Hydration in Children Using Intermittent Boluses of Balanced Salt Solution: Results of a Randomized Control Trial.William R Johnston, Allison L Mak Croughan, Rosa Hwang, Stephanie Collins, Amber Washington
Journal of Pediatric Surgery. 2024-11-01
Professional Memberships
- Member
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