Mary Jane Pionk, M.D.

8950 Villa La Jolla Drive
Suite B204
La Jolla, CA 92037
Phone: 858-558-PEDS (7337)
Fax: 858-558-7338

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La Jolla Developmental Pediatrics is located in the La Jolla/UCSD area just west of I-5 off of La Jolla Village Drive.

For more information please read
our Frequently Asked Questions
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Mary Jane Pionk is a Developmental-Behavioral Pediatrician whose practice is exclusively devoted to the evaluation and treatment of children, adolescents, and young adults with attention problems, behavioral challenges, developmental delays, learning difficulties, social-emotional problems, and other psychological or neurological concerns.


Dr. Pionk has a wide-range of experience in behavioral assessments including completing a fellowship in Developmental-Behavioral Pediatrics through UCSD/Rady Children’s Hospital. She is able to evaluate and treat a wide range of developmental-behavioral clinical problems. These areas of specialization include but are not limited to:

ADHD, Learning Problems, Behavioral Problems, Anxiety Disorder, Depression, School Phobia, Selective Mutism, Separation Anxiety, Developmental Delay, Developmental Coordination Disorder, Language Disorder, Autism Spectrum Disorder, Asperger’s, and Social Skills Concerns.

Our diagnostic process will utilize interviews with caregivers and teachers, office based assessments, review of medical, psychological and education records and if needed observations at school. Once the individual is properly diagnosed, we strive to insure that the family understands the diagnosis and treatment plan. If a diagnosis is not evident, we focus on the needs of the individual and family. Our treatment plan involves identifying optimum resources, schools, therapies, prescribing medications if needed and other interventions necessary for a successful outcome. We encourage consistent follow-up to monitor progress and to maintain the best possible results.

If an individual recently completed a comprehensive evaluation, we will focus on maintaining effective treatment and follow-up. Occasionally, re-evaluation may be indicated. We encourage young adults into our practice and tailor our approach to the unique needs of the individual. We are committed to privacy, independence and self-reliance.

Dr. Pionk does not replace your primary care pediatrician or physician. We encourage a multi-disciplinary approach and involve other specialists as needed. Dr. Pionk is dedicated to providing high quality care in a supportive and compassionate environment.


Mary Jane Pionk MD FAAP

Dr. Mary Jane Pionk has been providing pediatric care for over 20 years. She received her undergraduate degree in Nursing, worked in general and critical care pediatrics and completed a Cardiovascular Nurse Specialist Program at Methodist Hospital in Houston, Texas. She then attended and received her Medical Degree from Michigan State University and completed her pediatric internship and residency at Stanford University and the Lucille Packard Children’s Hospital at Stanford. Dr. Pionk worked as a general pediatrician for 12 years in the Northern California Bay area with a multi-specialty group. She held many leadership positions including Chief of Pediatrics at El Camino Hospital in Mountain View, CA, site-leader for her pediatrics department, and committee member for the Palo Alto Medical Foundation in the areas of Infectious Disease, QA, and Pharmacy and Therapeutics. Dr. Pionk currently continues her affiliation and consulting work the Palo Alto Medical Foundation.

Dr. Pionk completed a Developmental-Behavioral Pediatric fellowship program at UCSD/Rady Children’s Hospital in San Diego, CA. She has worked in both the Developmental/Behavioral Clinic at UCSD and Rady Children’s Hospital, provided Pediatric Developmental case management and coordination for the multidisciplinary Down Syndrome Clinic at Rady Children’s Hospital, and provided Developmental and Behavioral medical evaluations at the San Diego Regional Center. Dr. Pionk provides expert witness and testimony regarding Developmental/Behavioral pediatric issues.

Dr. Pionk has served as both a volunteer physician and Pediatric Committee member with Interplast, a non-profit organization providing reconstructive surgeries to children and adults in developing countries. She is also a longtime Committee member and judge for the Internaltional Health and Medical Media Awards. She is a member of the Society of Developmental and Behavioral Pediatrics and is a Fellow of the American Academy of Pediatrics. She is a staff physician at Rady Children’s Hospital.


Bachelor of Science - Nursing
Michigan State University
Cardiovascular Nurse Specialist

Medical Degree (M.D.)
Michigan State University
College of Human Medicine

Pediatric Residency
Stanford University
Lucille Packard Children’s Hospital at Stanford

University of California San Diego
Developmental and Behavioral Pediatrics


“Inconsolable night-time awakenings: Beyond night terrors.”
Journal of Developmental and Behavioral Pediatrics 29(4): 311-312, August 2008.

Co-investigator: MMAT/ADHD System-BioBehavioral Diagnostics/UCSD 2007-2008

Synagis/RSV Study-El Camino Hospital 1997

Bay Area Parent Magazine-Vaccine Article

San Jose Magazine “Top Doctors” 2005-2007

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