Pediatric Cystic Fibrosis (CF) Providers
![Gerald D. Gong, MD](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/gerald-gong-md.jpg)
Gerald D. Gong, MD
Specialties
![Michelle M. Ratkiewicz, DO](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/95551_Ratkiewicz_Michelle_20220804_ID.jpg)
Michelle M. Ratkiewicz, DO
Specialties
![Jeanette M. Smith, PhD](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/phys_christopher-jeanette.jpg)
Jeanette M. Smith, PhD
Specialties
![Sophia N. Williams, MD](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/Sophia-Williams-MD.jpg)
Sophia N. Williams, MD
Specialties
![Dana L. Valletta, MS, RN, CPNP-AC/PC](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/Valletta-Dana-NP.jpg)
Dana L. Valletta, MS, RN, CPNP-AC/PC
Specialties
Adult Cystic Fibrosis (CF) Providers
![Gerald D. Gong, MD](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/gerald-gong-md.jpg)
Gerald D. Gong, MD
Specialties
![Da-Wei Liao, MD](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/liao.jpg)
Da-Wei Liao, MD
Specialties
![Jeanette M. Smith, PhD](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/phys_christopher-jeanette.jpg)
Jeanette M. Smith, PhD
Specialties
![Lynn M. Preudhomme, FNP](https://ep.phoenixchildrens.com/ep/linkedfiles/findadoctor/preudhomme,-lynn-180606-web.jpg)
Lynn M. Preudhomme, FNP
Specialties