Gilbert Office Providers

We currently have seven providers practicing out of our Gilbert office. Please feel free to browse the bios of each of our providers below.

Robin R. Laks, M.D., F.A.A.P.

Hello and welcome to Mesa Pediatrics. My name is Robin Laks Adami and I have been practicing general pediatrics since 1999. I received my medical education at the University of Iowa Medical School after completing my undergraduate degree at Luther College obtaining a BA in Biology and Music. After graduation from the University of Iowa I completed my internship and residency locally at the Phoenix Hospitals Affiliated Pediatrics Program. I am certified by the American Board of Pediatrics.  My past interest in training for triathlons has been replaced by chasing around my husband and my beautiful 3 girls, all 5 and under!  



Ashley Navarro M.D., F.A.A.P.

Hi there!  My name is Ashley Navarro and I'm very excited to be a part of Mesa Pediatrics.  I grew up in Chandler then moved to Tucson where I received my Bachelor of Science in Physiology, medical degree, and residency training at the University of Arizona.  My husband is an Emergency Medicine physician and we have an adorable daughter.  I enjoy spending time with my family and look forward to meeting yours!


Ivia Hess, M.D.

I grew up in Manhattan and have been a practicing pediatrician since graduating Medical School at Cornell University Medical Center over 25 years ago. I completed my Internship & Residency at University of Maryland Medical Systems.  Soon after I became certified by the American Board of Pediatrics and moved to Arizona. I love teaching and was an instructor in the Doctoring Program at the University of Arizona Medical School, Phoenix Campus for a while. My love in pediatrics is getting to know families and seeing them grow. In return,  families get to know all about my family and me. My husband and I have seven adult children and seven grandchildren. We are both “foodies,”  are active in our church, love to hike and travel.
I look forward to getting to know you. 


Chia Hsiang Tung, M.D.

Hi! My name is Winnie Tung, and I'm so excited to be a part of Mesa Pediatrics! I was born in Taiwan and moved to Southern California when I was 5 years old. I later obtained my Bachelor of Science degree in Microbiology from UC Berkeley. After that, I moved out to West Texas, where I earned my medical degree from Texas Tech University Health Sciences Center. Then I came to Arizona to complete my residency program at Phoenix Children's Hospital/Maricopa Medical Center, and Arizona this is where I found my new home! I enjoy arts and crafts and traveling in my free time. I look forward to meeting your family soon! 


Bill Gause, PA-C

Hi. My name is Bill Gause. I received a Bachelor of Science Degree from Grand Canyon University and a Masters Degree in Physician Assistant Studies from Kirksville College of Osteopathic Medicine. I am certified by the National Commission of Physician Assistants. I have practiced medicine since 1999, a majority of that time exclusively in pediatrics. I am married and have two children.


Grace Hannon, PA-C

Hi! My name is Grace Hannon. I am originally from Staten Island, NY. When my family relocated to Gilbert, my sister and I became patients of Mesa Pediatrics!  I received my undergraduate degree in Nutritional Sciences from the University of Arizona, and my master's degree in Physician Assistant Studies at Northern Arizona University at the Phoenix Biomedical Campus. I have always had a strong interest in working in pediatrics and truly enjoy getting to know not only the children but their families as well. In my spare time I enjoy spending time with my husband, our family, friends, and especially our four legged fur baby, Minnie!  I also enjoy running, traveling and cheering on the Arizona Wildcats! I am so excited to be a part of this amazing group, and look forward to meeting you soon!


Becky Purinton, CPNP

I have been working as a Pediatric Nurse Practitioner since I completed my master's in nursing and training as a Pediatric Nurse Practitioner at ASU in 1996.  I am certified as a Pediatric Nurse Practitioner through the Pediatric Nursing Certification Board.  My work experience also includes nursing care of new mothers and their newborn babies, as well as working for 6 years at Phoenix Children's Hospital.  I am also a Certified Asthma Educator, AE-C.  If you or your child are wanting to understand asthma and asthma medications better, make an "Asthma Education' visit with me.  I enjoy arts and crafts, walking my dog, cooking and cheering for the Arizona Cardinals.  I am also the proud mother of two wonderful young adult children.