Colorectal Surgeons

Andrea Tereza Badillo, MD
- Associate Division Chief, Colorectal & Pelvic Reconstruction
- Program Director, Pediatric Colorectal Fellowship
- Surgeon
Andrea Tereza Badillo, MD
Locations
Departments
Christina Feng, MD
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Departments
Marc Levitt, MD
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Departments
Erin A. Teeple, MD
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Departments
Gastroenterologists
Geetanjali Bora, MD
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Departments
Anil Darbari, MD
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Departments
Gynecologists

Allison Mayhew, MD
- Director, Pediatric and Adolescent Gynecology
- Pediatric and Adolescent Gynecologist
- Surgeon
Swetha Naroji, MD
Locations
Departments
Urologists

Celicia Williams Little, NP, APRN, DNP
- Director, Spina Bifida Transition
- Program Coordinator, Spina Bifida
- Nurse Practitioner
Celicia Williams Little, NP, APRN, DNP
Locations
Departments
Hans G. Pohl, MD
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Departments

Briony Kate Varda, MD, MPH
- Research Director, Colorectal & Pelvic Reconstruction
- Research Director, Urology
- Co-Director, Spina Bifida Program
- Urologist
Briony Kate Varda, MD, MPH
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Departments
Advanced Practice Providers
Krystal Nya Artis, PA-C
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Departments
Lindsay Cushen Clarke, PA-C
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Departments
Margaret Ellen Currey, CRNP
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Departments
Nurses

Cassie do Carmo, BSN, RN
- Nurse Clinical Coordinator

Olivia Cleckley, MSN, RN, CPN
- Nurse Clinical Coordinator
Olivia Cleckley, MSN, RN, CPN
Languages
- English
Departments
Biography
Olivia Cleckley, MSN, RN, CPN, serves as a Nurse Clinical Coordinator for the Division of Colorectal & Pelvic Reconstruction. Olivia obtained her Master of Science in Nursing Leadership from Benedictine University in Illinois. Her previous nursing experience includes serving as a Patient Placement Manager, Administrative Nursing Manager, and Emergency Medicine and Trauma Nurse, all at Children’s National Hospital. She is a member of the Sigma Theta Tau International Honor Society of Nursing.

Pharra Flach, MS, RN
- Case Manager

Justine Gagnon, BSN, RN
- Nurse Clinical Coordinator
Justine Gagnon, BSN, RN
Languages
- English
Departments
Biography
Justine Gagnon, BSN, RN, CPN, earned her Bachelor of Science in Nursing from the University of Maryland in 2013, joined the Children’s National team as a nurse intern in 2012, and then begun her nursing career as a staff nurse in the Nurse Residency Program on the Surgical Care Unit in 2013. As a staff nurse on the Surgical Care Unit she earned her certification in Pediatric Nursing and was first introduced to the colorectal patient population. In 2018, Justine transitioned into a leadership role as a Shift Coordinator on the Surgical Care Unit. She now serves as a Clinical Nurse Coordinator for Colorectal & Pelvic Reconstruction at Children’s National. Justine is excited for the opportunity to improve care for pediatric colorectal patients in our nation’s capital and around the world.

Meghan Mesa, BSN, RN, CPN
- Nurse Clinical Coordinator
Meghan Mesa, BSN, RN, CPN
Locations
Languages
- English
Departments
Bio
Meghan Mesa, BSN, RN, CPN, has been a nurse at Children's National Hospital for 14 years, and is a Certified Pediatric Nurse. She graduated from Clemson University with a Bachelor's degree in Nursing in 2006. After graduation,Meghan began her career as a staff nurse at Children's National caring for post-operative surgical patients in the nurse residency program. In 2016, she transitioned to the Clinical Instructor position on the inpatient Surgical Care Unit where she remained until joining the Colorectal Center program in 2019 as one of our Clinical Nurse Coordinators. Meghan is excited to be a valuable part of the collaborative team and is passionate about caring for children with colorectal conditions.

Emily Rice, BSN, RN, CPN
- Nurse Clinical Coordinator
Emily Rice, BSN, RN, CPN
Languages
- English

Maddie Scallion, BSN, RN
- Nurse Clinical Coordinator
Maddie Scallion, BSN, RN
Locations
Languages
- English
Departments

Janel Talley, MSN, RN, CPN
- Nurse Clinical Coordinator
Janel Talley, MSN, RN, CPN
Locations
Languages
- English
Departments
Biography
Janel Talley, MSN, RN, CPN, serves as a nurse clinical coordinator for the Division of Colorectal & Pelvic Reconstruction. Janel obtained her Master of Science in Nursing Education from Walden University. She has been here at Children's National for over 20 years and is a certified pediatric nurse. Her previous nursing experience includes serving as a registered nurse, shift coordinator and professional practice specialist, all at Children’s National Hospital. She is a member of the Society of Pediatric Nurses.
Psychologists
Ari Romano-Verthelyi, PhD
Locations
Departments
Leadership

Julie Choueiki, MSN, RN
- Senior Program Manager, Colorectal & Pelvic Reconstruction
Julie Choueiki, MSN, RN
Languages
- English
Departments
Biography
Julie Choueiki was recruited to build and serve the Division of Colorectal & Pelvic Reconstruction at Children’s National Hospital. Julie's expertise in program management and strategy poised her to develop a collaborative center in the nation’s capital, treating and serving children from all over the United States and beyond.
Julie completed a masters of science in nursing administration at the University of Cincinnati. She worked as a trauma, critical care and emergency department nurse, nurse educator, informatics educator and professional development nurse specialist. In her personal time, Julie enjoys traveling the world, hiking and spending time with her family.
Katherine Marie Worst, NP, CPNP-AC
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Departments
Administrative Team

Sydney Atwood
- Program Associate

Candice Kenner
- Clinical Registration Specialist

Wendy Lee
- Program Associate

Cheery Vallarasan
- Clinical Registration Specialist

Azalea Westray
- Program Associate

Jennifer Zeledon
- Program Coordinator
Surgical Coordinators

Esteli Chavez-Castillo
- Surgical Coordinator

Crystal Gatling
- Surgical Coordinator

Risa Hucks
- Surgical Coordinator

Dina Makonnen
- Surgical Coordinator

Karla Velasquez
- Surgical Coordinator
Fellows

Filipa Jalles
- Colorectal Research Fellow

Thomas Xu
- Colorectal Research Fellow
Inpatient Care Team Professionals

Eliana Maldonado, MSN, RN
- Professional Practice Specialist – Surgical Care Unit

Nicole Rainey, BSN, RN, CPN
- Clinical Instructor – Surgical Care Unit
Child Life Specialists

Laura Gepford
- Child Life Specialist

Laura Thackeray, CCLS
- Child Life Specialist
Laura Thackeray, CCLS
Locations
Languages
- English
Departments
Contact
Anesthesiologists

Giuliana Patricia Geng-Ramos, MD
- Medical Director, Pre-Operative Care Clinic and Post-Anesthesia Care Unit
- Anesthesiologist
Giuliana Patricia Geng-Ramos, MD
Locations
Departments

Sophie Rose Pestieau, MD
- Associate Chief, Clinical Affairs
- Medical Director, Center for Surgical Care
- Anesthesiologist
- Acute Pain Specialist
Sophie Rose Pestieau, MD
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Departments
Neurosurgeons
Robert Francis Keating, MD
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Departments
- Brachial Plexus Program
- Brain Tumor Institute
- Cancer and Blood Disorders Center
- Neuroscience and Behavioral Medicine Center
- Colorectal
- Cleft and Craniofacial Program
- Movement Disorders Program
- Neurocritical Care
- Neurofibromatosis Institute
- Neurosurgery
- Prenatal Pediatrics Institute
- Spina Bifida Program
- Tuberous Sclerosis Program
John Socrates Myseros, MD
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Departments
Pathologists
Sam Paul Gulino, MD
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Departments

Christopher Thomas Rossi, MD
- Medical Director, Anatomic Pathology
- Program Director, Pediatric Pathology Fellowship