Staff

What is a Pediatric Surgeon?

Pediatric Surgeons specialize in the care of infants, children and adolescents. Following graduation from medical school, a surgeon must complete at least five years of graduate surgical education in a general surgery residency program. Two additional years in a pediatric surgery fellowship complete the required training for a pediatric surgeon.

Certification in General Surgery and Pediatric Surgery is accomplished with both a written examination to ensure surgical knowledge is of the highest level and an oral exam to determine the ability to manage surgical problems. This certification must be renewed every 10 years by written examination.

Our experts work with pediatricians, family practitioners, pediatric anesthesiologists, and other pediatric specialists to ensure the highest standard of care for our patients.

Our Doctors

Julie I. Sanchez, MD, FACS

Dr. Sanchez and her family have lived in Austin since 2001. In addition to a successful surgical practice, she is a co-founder of Abilitee Adaptive Wear, an online clothing company for children and adults with special needs. She also has a passion for education, global health and injury prevention.

Ankur R. Rana, MD

Dr. Rana is a clinical pediatric surgeon with experience in all aspects of neonatal and pediatric surgery, with special clinical interest in pediatric oncology, thoracic surgery and complex gastrointestinal surgery including minimally invasive surgery. He is also the Educational Experience director.

Jessica Ann Naiditch, MD

Dr. Naiditch is a board certified pediatric surgeon with an interest in the surgical management of inflammatory bowel disease, trauma & oncology. She is the lead surgeon on the Austin Pediatric Surgery Inflammatory Bowel Disease Team and is the Trauma Medical Director at Dell Children’s Medical Center. She has published on topics including lung biopsy, […]

Tory A. Meyer, MD, FACS

Dr. Meyer has enjoyed the beauty of the Austin area since 2000 when he moved here with his wife and three children. In addition to a busy surgical practice, he has served as Surgery Dept. Chair and Chief of Staff and is the present Chairman of the Pediatric Leadership Board. Dr. Meyer is a Clinical […]

Michael D. Josephs, MD, FACS

Dr. Josephs moved to Austin from the East Coast in 2002 to provide surgical care to the children of Central Texas. In addition to the state-of-the-art healthcare environment, he was drawn to the vast opportunities for outdoor activities in the hill country along with the many live music venues.

Jeffrey R. Horwitz, MD, FACS

Dr. Horwitz was born and raised in Houston. He has been living in Austin since 1999. His incredibly supportive family includes his wife Treva, daughter Aiden and two chihuahuas, Gracie and Bella.

David W. Tuggle, MD, FACS, FAAP, FCCM

Dr. Tuggle was Vice Chair of Surgery and Chief of Pediatric Surgery at the OU Medical Center until 2013. He and his wife moved to Austin to be near their son, daughter-in-law and grandchildren. His current interests are trauma and acute care surgery in children.

Nilda M. Garcia, MD, FACS

Dr. Garcia is the Surgeon in Chief for Dell Children’s. She also holds an academic appointment of Professor of Surgery & Perioperative Care with Dell Medical School at the University of Texas at Austin. She is active in the field of pediatric surgery and pediatric trauma. She is the Division Head of Pediatric Surgery for […]

Erich J. Grethel, MD, FACS, FAAP

Dr. Grethel lives in Austin, Texas with his wife and three children. He has been practicing pediatric surgery here since 2010. He is surgeon champion for the Dell pediatric NSQIP team and is involved in quality and outcome measures for pediatric surgery patients.

Midlevel Providers

Midlevel providers are Nurse Practitioner’s (NP’s) and Physician’s Assistant’s (PA’s) who have completed advanced training in the management and diagnoses of various medical conditions, including chronic diseases. They work closely with physicians to provide a broad range of care while serving as a patient’s routine health care provider.

Our midlevel providers provide the highest levels of individualized care and make the patient’s needs their top priority, striving towards prevention, overall health, and patient education.

Tammie Warren, MSN, RN, CPNP-AC/PC

Tammie has been part of the pediatric nursing community in Austin since 2002. She became a Pediatric Nurse Practitioner in 2006 and has been part of the Pediatric Surgery/Trauma team since 2008. She is board certified in both primary and acute care. She has a passion for caring for our surgical and trauma patients and […]

Megan Malfer, MSN, RN, FNP-C

Megan lives in Austin with her husband and their dog, Murphy. She has worked at Dell Children’s Medical Center as a nurse in critical care for 6 years. She loves being a part of the Pediatric Surgery and Trauma team because she gets to work so closely with families to help kids return to health […]

Lisa Cronin, PA

Lisa moved to Austin in 1997 for graduate school (Hook ’em!) and has lived here ever since. She enjoys hiking, visiting new places, and reading. She began practice as a Physician Assistant in 2005 and has provided care to injured children at Dell Children’s Medical Center since 2010. She joined Austin Pediatric Surgery in the […]

Jessie Cowen, DNP, RN, CPNP-AC/PC

Jessie moved to Austin in 2007 to work as a pediatric nurse at Dell Children’s Medical Center. She has been a nurse practitioner with Austin Pediatric Surgery since 2016. She is board certified in both acute and primary care pediatrics. In her free time, she enjoys traveling, trying new restaurants, and spending time outside with […]

Kelly Hoffman, MSN, RN, CPNP-AC/PC

Catherine (Michelle) Pullin, MSN, RN, CPNP-AC

Michelle has lived in Austin since 2014. She began her Nurse Practitioner career in 2008, caring for children in the Pediatric Intensive Care Units in San Antonio and later joined Dell Children’s Medical Center in Austin. She transitioned to the Austin Pediatric Surgery team in 2016. Outside of work, Michelle enjoys spending time with her […]

Kelly Pretorius, MSN, RN, CPNP-AC/PC, MPH

Kelly obtained her undergraduate degree at University of Texas at Austin in 2007, Master’s in Nursing at Duke University in 2010, Master’s in Public Health in 2017, and is currently a PhD candidate at University of Texas at Austin. Kelly has been a pediatric nurse practitioner for 9 years and recently joined Dell Children’s Medical […]

Sarah Wilson-Kennelly, MSN, RN, CPNP-AC/PC

Sarah Wilson-Kennelly has been a Pediatric Trauma Nurse Practitioner for 17 years and has worked at Dell Children’s Medical Center for the past 6 years. She lives in Austin with her wife and daughter and enjoys exploring the amazing city of Austin with her family.

Laura Seris, MSN, RN, CPNP-AC

Laura has been a pediatric nurse since 2005 and a Nurse Practitioner with Austin Pediatric Surgery since 2011. Her favorite aspect of caring for pediatric patients and their families is assisting them through the recovery from surgery and seeing their smiling faces as they get discharged home. She enjoys traveling, gardening and spending time with […]

Lisa Gonzales, MSN, RN, CPNP-AC/PC

Lisa lives in Austin, TX with her husband and children. She has been a nurse practitioner since 2013 and a Registered Nurse since 2008. She has worked with Austin Pediatric Surgery since 2016, and she enjoys spending time with her family, scrapbooking, reading, hiking and swimming.

Sarah Goldshtrom, MSN, RN, CPNP-AC/PC

Sarah Wilson-Kennelly has been a Pediatric Trauma Nurse Practitioner for 17 years and has worked at Dell Children’s Medical Center for the past 6 years. She lives in Austin with her wife and daughter and enjoys exploring the amazing city of Austin with her family.

Amy Gann, MSN, RN, CPNP-AC/PC

Amy has been a nurse since 1995, and a Pediatric Nurse Practitioner since 2004 starting with Pediatric General Surgery and Pediatric Emergency Medicine at Vanderbilt Children’s Hospital, Nashville, TN. In pursuit of warmer weather and sunny skies, Amy moved to Austin in 2011 to continue her passion in caring for children with Austin Pediatric Surgery. […]

Julia Freitag, PA

Julia Freitag, PA-C has been a PA since 2006. She has spent her career solely in pediatric trauma and surgery, and couldn’t see herself doing anything else. During her off time, she enjoys spending time with her husband and four daughters.

Brianna Burg, MSN, RN, CPNP-AC/PC

Brianna has lived in Austin, Texas since 2001. She began working with Austin Pediatric Surgery in 2009. She enjoys working with trauma and surgical patients and caring for hospitalized children and families. She enjoys golfing, boating, reading and spending time with her husband and two sons.