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Dr. Julia Johnston, PhD 
Pediatric Psychologist

Dr. Julia Johnston is a licensed clinical psychologist offering services for concerns in early childhood through young adulthood. She helps children, adolescents, or young adults address concerns such as anxiety, perfectionism, sadness or depression, grief, social difficulties, stress, chronic pain, adjustment to major life stressors, and executive functioning difficulties, among others. Dr. Johnston has a clinical emphasis and advanced training supporting youth diagnosed with chronic or acute medical conditions. She works with individual clients and their families to help support optimal physical health, psychological well-being, academic or vocational functioning, and movement toward client-identified goals. Her clinical experience spans hospital settings (inpatient, outpatient, specialized clinics), mental health community clinics, camps, and national and international conferences. Dr. Johnston's work is grounded in clinical experience and advanced training in evidence-based care.

 

In addition to clinical work, Dr. Johnston remains active in scientific research with the goal of advancing understanding and care for children with chronic medical conditions. Selected peer-reviewed publications can be found below. She is a clinical supervisor for doctoral level students providing psychological care to children and youth in medical settings. 

Headshot of Dr. Johnston against a gray background
Photograph of Dr. Johnston holding a microphone and speaking to an audience that is not pictured.

My  Approach

My goal is to help young people build resilience, improve their quality of life, heal, and achieve their goals through evidence-based therapies and a collaborative working relationship. I view my role as a guide — someone who can help you navigate challenging emotions, situations, and physical symptoms, so you can build your most meaningful and fulfilling life. I firmly believe that young people deserve comprehensive care from clinicians who understand the intersection of complex physical health and emotional well-being.

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I utilize evidence-based interventions to support youth in therapy. These interventions have been scientifically evaluated and shown to help children and adolescents move toward their goals — whether that means managing anxiety, improving mood, or enhancing academic performance. Therapy is tailored to each individual, and progress is monitored through questionnaires and data to ensure that every young person is moving toward their outlined goals.

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My approach draws on a range of evidence-based interventions, including cognitive-behavioral therapy (CBT), trauma-focused cognitive-behavioral therapy (TF-CBT), motivational interviewing (MI), acceptance and commitment therapy (ACT), elements of dialectical behavior therapy (DBT), exposure therapy, mindfulness-based interventions, and behavioral interventions.​​​​​​​​

Education, Training, and Background

Pediatric Psychologist

Johns Hopkins All Children's Hospital

Post-doctoral fellowship

Johns Hopkins All Children's Hospital

Residency

Johns Hopkins All Children's Hospital

Ph.D

University of South Carolina

Pediatric psychologist for the Cancer and Blood Disorders Institute. Johns Hopkins All Children's Hospital. 

Combined clinical and research post-doctoral fellowship providing care to youth and families in pediatric hematology, oncology, and bone marrow transplant. 

Pre-doctoral American Psychological Association (APA) accredited residency in Pediatric Psychology at Johns Hopkins All Children's Hospital. 

Master's & Ph.D. in clinical psychology earned from the University of South Carolina (APA Accredited) in the Pediatric Health and Neurodevelopment Laboratory. 

Select publications

Frye, W. S., Ward, S. R., & Johnston, J. D. (2026). Patient-reported perspectives of a temporal relationship between autonomic dysfunction and mental health symptoms in a pediatric population. Autonomic Neuroscience, 103445.

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Johnston, J. D., Schatz, J., & Gamwell, K. L. (2024). Commentary: Empirically derived profiles of neurocognitive functioning in youth and young adults with sickle cell disease. Journal of Pediatric Psychology, 49(9), 614-615.

 

Johnston, J. D., Reinman, L. C., Bills, S. E., & Schatz, J. C. (2023). Sleep and fatigue among youth with sickle cell disease: A daily diary study. Journal of Behavioral Medicine, 46(3), 440-450.

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Johnston, J. D., Schatz, J., Bills, S. E., Frye, B. G., & Carrara, G. C. (2023). Preschool Pain Management Program for Young Children with Sickle Cell Disease: A Pre–Post Feasibility Study. Journal of Pediatric Psychology, 48(4), 330-340.

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Johnston, J. D., Roberts, E. I., Brenman, A., Lockard, A. M., & Baker, A. M. (2023). Psychosocial functioning and adjustment to university settings: comparing students with chronic illnesses to healthy peers. Journal of american college Health, 71(4), 1143-1151.

Dr. Johnston has experience working with youth the following chronic illnesses:

  • Asthma

  • Aplastic anemia 

  • Amputation

  • Amplified musculoskeletal pain syndrome (AMPS)

  • Cancer

    • Bone Sarcomas (ex: osteosarcoma, Ewings)​

    • Soft tissues sarcomas (ex: rhabdomyosarcoma)

    • Leukemias (ex: acute lymphoblastic leukemia)

    • Lymphomas (Hodgkin & non-hodgkin)

    • Brain & spinal cord tumors (ex: astrocytoma)

    • Neuroblastoma

    • Solid tumors (Wilms tumor)

    • & more (melanoma) 

  • Congenital heart defects​

  • Chronic pain

  • Bleeding disorders

    • von Willebrand ​

    • Hemophilia 

  • Bone marrow transplant ​​​

  • Celiac disease​

  • Chronic kidney disease

  • Crohn's disease

  • Cystic fibrosis

  • Cerebral palsy

  • Dysautonomia (POTS​, vasovagal syncope)

  • Diabetes (type 1 & type 2)

  • Ehlers danlos syndromes (hypermobile, classical)

  • Endometriosis

  • Epilepsy

  • Functional neurological disorder

  • Genetic disorders

  • Hemophagocytic lymphohistiocytosis (HLH)

  • Irritable bowel syndrome

  • Juvenile arthritis

  • Lupus​

  • Migraine/ chronic headaches

  • Muscular dystrophy

  • Neurofibromatosis (type 1 & 2)

  • ​Obstructive sleep apnea

  • ​Polyendocrine metabolic ovarian syndrome (PMOS)

    • previously PCOS

  • Rare diseases​

  • Sickle cell disease

  • Scoliosis 

  • Severe combined immunodeficiency (SCID)

  • Solid organ transplant (kidney, heart)

  • Spina Bidifa

  • Thyroid disorderd

  • Ulcerative colitis

Disclaimer:​

​The information contained in this website is provided for informational and educational purposes only. Information in this website should not be used for diagnosis or therapy purposes and is not therapy, medical advice, diagnosis, or treatment, nor is that information intended for that use. The use of this website does not imply nor establish any type of doctor/patient relationship. Dr. Johnston is licensed to practice in the state of Florida and PsyPACT approved states.

 

This website takes no responsibility with regards to misinterpretation of the information provided within this website or any consequences resulting from the use of this website. This website takes no responsibility for any other websites that may be linked to this website as a resource for families or imply any relationships or endorsements to any linked websites. 

 

Adaptive Health Psychology PLLC's website, phone/ voicemail, e-mail, and "contact me" forums are not monitored for crises. Dr. Johnston does not offer 24/7 crisis support for existing or interested clients. If you are or someone you know is experiencing a medical or mental health emergency, please dial 911, 988 (suicide hotline) and/ or go to your nearest emergency room.

 

If you are suffering from a mental health concern that requires immediate attention, please dial 911, 988 (suicide hotline), go to your nearest emergency room, contact the SAMHSA National Helpline 1-800-662-HELP (4357) or navigate to FindSupport.gov. 

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You have the right to receive a Good Faith Estimate of what services may cost under the No Surprises Act.

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Adaptive Health Psychology

Clearwater, St. Petersburg, & Sarasota

Florida & PsyPACT states​

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