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Program Leadership, Faculty, and Current Fellows

Pediatric Surgery Fellowship Program

Program Leadership

David Notrica, MD
Program Director

Dr. Notrica graduated Cum Laude from Duke University in 1988 and Emory University School of Medicine in 1992 where he was class president and a member of the Alpha Omega Alpha National Medical Honor Society. He completed his general surgery residency training at Emory University Affiliated Hospitals in 1997 and his Pediatric Surgery Fellowship training at Baylor College of Medicine/Texas Children’s Hospital in Houston in 1999.

Dr. Notrica is board certified in both Pediatric Surgery and General Surgery by the American Board of Surgery. Dr. Notrica developed and continues to direct the Level 1 Trauma Center for Phoenix Children’s Hospital. This program is the only ACS-Verified Level 1 Pediatric Trauma Center in the state of Arizona. Additionally, he is co-director of the joint chest wall program with Phoenix Children’s Hospital and Mayo Clinic Arizona. His special interests are in Biliary Atresia, Diaphragm Pacers, Inflammatory Bowel Disease, and Pectus Excavatum repair.

Dan Ostlie, MD
Associate Program Director

Dr. Ostlie completed his residency in general surgery at Mayo Clinic Scottsdale from 1995 to 2000 and still has family in the area. Following fellowships at Cambridge University, Cambridge, UK, and Children’s Mercy Hospital, Kansas City, MO, he stayed on at Children’s Mercy, starting as a staff surgeon. During his 10 years with the institution, he rose through numerous leadership roles including vice chair of the Department of Surgery and program director of both the Pediatric Surgery Residency and Surgical Critical Care Fellowship.

Dr. Ostlie specializes in performing minimally invasive and laparoscopic procedures in children, which constitute approximately 85 percent of his practice. Dr. Ostlie’s research interests are focused on evidence-based pediatric surgery and he has participated as the primary investigator or co-investigator in more than 20 prospective randomized controlled trials in infants and children. He holds certification from the American Board of Surgery in pediatric surgery, surgical critical care, and general surgery.


Jae O-Bae, MD
Dr. Bae grew up in northern New Jersey. He obtained his undergraduate education at the Johns Hopkins University, graduating with honors, and then went on to UMDNJ-Robert Wood Johnson Medical School graduating in 2000. He completed his residency in general surgery at Columbia University Medical Center/New York-Presbyterian Hospitals. During his residency, he spent two years doing basic science research in neuroblastoma angiogenesis combined with a clinical fellowship in Extracorporeal Membrane Oxygenation (ECMO) at the Morgan Stanley Children’s Hospital of New York-Presbyterian.

Following his general surgery training, Dr. Bae completed his pediatric surgery fellowship at University of Texas Southwestern Medical School/Children’s Medical Center at Dallas. Dr. Bae is board certified in pediatric surgery and general surgery by the American Board of Surgery and is a Fellow with the American Academy of Pediatrics and a Fellow of the American College of Surgeons. His medical interests include childhood cancers and patients diagnosed with chest wall anomalies.

Katherine Davenport, MD
Dr. Davenport graduated from the University of Texas Health Science Center. Upon completion of her coursework, she held a general surgery internship and residency at Eastern Virginia Medical School Department of Surgery. She then completed her research fellowship at Children’s National Medical Center in Washington, DC, followed by her clinical pediatric surgery fellowship at Rady Children’s Hospital.

Dr. Davenport has participated in numerous research studies and presentations, co-authored various publications and is a member of several professional societies, including American College of Surgeons. In her free time, she enjoys long distance running, lacrosse, piano and kayaking.

John Egan, MD
Dr. Egan graduated from the University of Notre Dame in 1991 and Loyola University Chicago Stritch School of Medicine in 1995 where he was a member of the Alpha Omega Alpha National Medical Honor Society. He completed his general surgery residency training at David Grant USAF Medical Center, Travis Air Force Base, in 2001. After general surgery practice for the U.S. Air Force, he received additional training in Pediatric Surgical Critical Care at Children’s Hospital of Wisconsin prior to his Pediatric Surgery Fellowship which he completed in 2008.

Dr. Egan is a Fellow of the American College of Surgeons. He is board certified in Pediatric Surgery, General Surgery, and Surgical Critical Care by the American Board of Surgery. He is the Surgical Co-Director of the Trauma Department at Phoenix Children’s Hospital. He enjoys training surgeons from Mayo Clinic – Arizona, Phoenix Integrated Surgical Residency (Banner University) program, and St Joseph’s Hospital. He coordinates medical student rotations for pediatric surgery from University of Arizona College of Medicine – Phoenix, Midwestern University, and 4th year elective medical students.

His special interests include pediatric surgical critical care, minimally invasive surgical techniques, and chest wall disorders. Dr. Egan also leads the surgical group’s pediatric melanoma surgery (as a member of the Pigmented Lesions Clinic), and has extensive experience with pediatric thyroid and parathyroid surgery.

Erin Garvey, MD
Dr. Garvey was born and raised in Colorado. She attended medical school in Vermont and completed her residency training at Mayo Clinic in Arizona in 2016. She is the inaugural fellow for the newly ACGME accredited Mayo Clinic Arizona/Phoenix Children’s Hospital pediatric surgery fellowship program.

Ramin Jamshidi, MD
Dr. Jamshidi attended UC San Diego on full academic UC Regents scholarship and spent a year at Harvard University as a Visiting Undergraduate Scholar. During medical school in Colorado, he served on the physics faculty at the University of Denver. While at UC San Francisco for surgical residency, he spent two years as a fetal surgery fellow and postdoctoral researcher, concentrating on medical device design and surgical education. Concurrently, he was on the physics faculty of University of San Francisco.

Following general surgery training, he completed pediatric surgery fellowship under the mentorship of Drs. Keith Oldham and Thomas Sato at the Children’s Hospital of Wisconsin in Milwaukee.

Dr. Jamshidi is Board Certified in General Surgery and Pediatric Surgery. His particular clinical interests are in endocrine, thoracic, and vascular disease as well as trauma and oncology. Active research efforts focus on three areas: physical science in medicine (such as device design), medical education, and clinical outcomes. Global health is another frequent activity of Dr. Jamshidi–he was named a Global Health Scholar at UC San Francisco and has ongoing relationships with groups in Guatemala and Peru.

Justin Lee, MD
Dr. Lee graduated from Tufts University School of Medicine in Boston. Upon graduation, he completed a general surgery residency at St. Elizabeth Medical Center in Boston followed by a pediatric surgery fellowship at Primary Children’s Hospital in Salt Lake City. He then held a general and thoracic pediatric surgery position at the University of Illinois at Chicago before coming to Phoenix Children’s.

Dr. Lee is actively involved in conducting patient safety, quality improvement, and clinical outcomes research. His work has been published in several peer-reviewed journals and a recent book chapter in the second edition of “Fundamentals of Pediatric Surgery.” He has also given various presentations at regional and national meetings, won numerous awards and is a member of several professional societies, including American Pediatric Surgical Association and American Academy of Pediatrics. Dr. Lee’s clinical interests include minimally invasive surgery (laparoscopic/thoracoscopic), neonatal surgery, single site laparoscopic surgery, chest wall reconstruction, and congenital colorectal anomalies.

Lisa McMahon, MD
Dr. McMahon graduated from the University of Virginia in 1992 then served as a Peace Corps Volunteer in Guatemala for 3 years. When she returned to the United States, she attended Texas A&M medical school and graduated in 2001. Dr. McMahon completed her general surgery training at Mayo Clinic – Arizona in 2006 and her pediatric surgery fellowship at Arkansas Children’s Hospital in Little Rock, AR in 2008.

Dr. McMahon’s medical interests include advanced laparoscopy, Hirschsprung’s disease, pectus excavatum, slipping rib syndrome, and childhood tumors. Additional interests include the specialized care of young patients diagnosed with inflammatory bowel disease. Dr. McMahon is a member of the Medical Advisory Committee for the Crohn’s and Colitis Foundation of America/Southwest Chapter. She is also a member of the Pediatric Advisory Committee for the National Crohn’s and Colitis Foundation. She is a surgeon with the Pectus Excavatum and Chest Wall Anomalies Clinic, a collaborative program with Phoenix Children’s Hospital and Mayo Clinic – Arizona. In her spare time, Dr. McMahon enjoys hiking, running, and yoga.

Mark Molitor, MD
Dr. Molitor graduated from the University of Arizona College of Medicine in 2002. Dr. Molitor completed his surgical residency at the University of Arizona. During residency, he took a two year leave of absence to complete a surgical research fellowship in tumor immunology at the University of Michigan. After completion of residency, he completed an additional fellowship in Surgical Critical Care and Extracorporeal Membrane Oxygenation (ECMO) at the University of Michigan. Following completion of his critical care training, Dr. Molitor completed his fellowship in Pediatric Surgery at the University of Utah and Primary Children’s Medical Center.

Dr. Molitor is board certified in Pediatric Surgery, General Surgery, and Critical Care Surgery by the American Board of Surgery. He is the Director of the ECMO Program at Phoenix Children’s Hospital and his medical interests include childhood tumors, ano-rectal malformations, chest wall disorders, thoracic lesions, and the full scope of pediatric surgery. He enjoys training other surgeons, physicians from other specialties, and medical students. Dr. Molitor and his wife have 4 children and live in the Phoenix Area. The family enjoys outdoor activities: running, hiking, and swimming, and participating in his kids extra-curricular activities. Dr. Molitor particularly enjoys foreign travel and cooking, especially Italian and Mexican food. Dr. Molitor speaks Spanish.

Benjamin Padilla, MD
Dr. Padilla graduated from and completed his residency from the University of California, San Francisco School of Medicine. He completed fellowship at the Children's Hospital of Philadelphia.

He specializes in pediatric general and thoracic surgery. His clinical interests include pediatric surgical oncology, pediatric endocrine surgery and the correction of chest wall malformations. His research interest focus on the use of novel technologies in pediatric surgical disease and the surgical management of rare pediatric endocrine conditions. His research efforts have been funded by the NIH and FDA. He is certified by the American Board of Surgery in Pediatric Surgery.

Dorothy Rowe, MD
Dr. Rowe graduated Cum Laude from Harvard University in 1988. She then spent two years at the National Institute of Health (NIH) as a research fellow. She attended medical school at Columbia College of Physicians and Surgeons in New York and was a member of the Alpha Omega Alpha Honor Society. Dr. Rowe graduated from medical school in 1994.

She went on to a Residency in General Surgery at Columbia University and spent two years completing a combined research/ECMO fellowship at the Babies and Children’s Hospital of New York. She completed a Pediatric Surgery Fellowship in June, 2003 at the Children’s Hospital of New York.

Dr. Rowe is board certified in General Surgery and Pediatric Surgery by the American Board of Surgery. She is actively involved with the Reproductive Anomalies/Disorders of Sex Development Clinic at Phoenix Children’s Hospital, a clinic devoted to providing a multidisciplinary approach to care for patients with genitourinary disorders.

Kathleen Van Leeuwen, MD
Dr. van Leeuwen is the Director of the Reproductive Anomalies/Disorders of Sexual Development at Phoenix Children’s Hospital, a multidisciplinary clinic that serves the complex needs of patients with congenital malformations of the reproductive system. She is also the Director of the Arizona Fetal Care Network (AZFCN). AZFCN is the only program in Arizona offering advanced fetal diagnosis and newborn medical and surgical intervention, all at one location. She is highly regarded by her peers for her ability to coordinate the care for the clinic’s patients and their families.

Dr. van Leeuwen understands the relevance of research in her field and as such is the Primary Investigator on several IRB approved studies including a patient registry for disorders of sexual development, a study involving non-cardiac surgery on uni-ventricular pediatric patients, and a multi-center trial investigating the care of children with blunt renal trauma.

Her community work includes the Speakers Bureau for the Arizona Affiliate of the Partnership for a Drug Free America where she has made several television appearances, written an article for Arizona Medical Association magazine, and was also a key contributor to the web-based video segments for

Current Fellows

Kathy Schall, MD
Kathy Schall, MD was born and raised in Nebraska. She attended medical school at the University of Nebraska Medical Center. She completed residency training at the University of Utah Affiliated Hospitals in Salt Lake City, Utah and during that time completed a three year research fellowship at Children's Hospital of Los Angeles.

Juan Gurria, MD
Juan Gurria, MD was born and raised in Medico City, Mexico. He attended medical school at the Universidad anahuac Escuela de Medicine. He completed residency training at the University of Illinois College of Medicine at Peoria. He completed a Pediatric Trauma Surgery fellowship at Cincinnati Children's Hospital followed by a Surgical Critical Care fellowship at Nationwide Children's Hospital. His wife is a physician in Hematology/Oncology at Phoenix Children's.

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