Primary Office

Nemours Children's Health, Jacksonville Nemours Children's Health, Jacksonville 807 Children's Way Jacksonville, FL 32207 Appointment: (904) 697-3600

Other Offices

Current Title

Chief, Division of Endocrinology and Diabetes
Nemours Children's Health – Jacksonville 

 

Professor of Pediatrics, Mayo College of Medicine

Education & Training

Fellowship

  • Pediatric Endocrinology - UCLA Medical Center, 1993

Residency

  • Pediatrics - Phoenix Hospitals Affiliated Pediatric Program, 1990

Medical/Dental School

  • MD - University of Health Sciences - Chicago Medical School, 1987

Board Certifications

  • American Board of Pediatrics/Pediatric Endocrinology

Awards & Recognition

  • 2021 Best Doctors in America
  • 2020 Best Doctors in America
  • 2019 Best Doctors in America
  • 2018 Best Doctors in America
  • 2017 Best Doctors in America
  • 2016 Best Doctors in America
  • 2015 Best Doctors in America
  • 2014 Best Doctors in America
  • 2013 Best Doctors in America
  • 2011 Best Doctors in America

Insurance Accepted

  • Aetna Better Health FL Medicaid and Healthy Kids
  • Aetna HMO/POS/PPO/EPO
  • AmeriGroup GA MCAID HMO JAX/GA
  • AmeriGroup GA PeachCare For Kids Jax/GA
  • AmeriHealth Caritas Florida (FKA Prestige Health Choice)
  • AvMed
  • Blue Cross and Blue Shield HMO
  • Blue Cross and Blue Shield Non HMO
  • Blue Cross Blue Shield Florida Blue Select
  • Cigna & Great West HMO/POS Open Access
  • Cigna & Great West PPO/EPO
  • Community Care Plan Medicaid
  • Employers Health Network PPO
  • Evolutions Healthcare
  • First Health Aetna PPO/EPO
  • Florida Medicaid
  • Florida Medicare
  • Georgia Medicaid/Georgia Better Health/Peachcare
  • HEALTHSMART PPO HEALTH PLANS JAX
  • HUMANA HEALTHY HORIZONS (FKA HUMANA MEDICAID)
  • Humana HMO/POS
  • Humana PPO/EPO
  • Molina Healthcare Medicaid
  • Multiplan PPO
  • Prime Health Services PPO Specialty Florida
  • Seminole Tribe of Florida
  • Simply Healthcare Healthy Kids
  • Simply Healthcare Medicaid HMO
  • Star Healthcare Network
  • Sunshine SMI/CMS 19 & 21
  • Sunshine State Health Plan Medicaid
  • Three Rivers Provider Network
  • Tricare/Humana Military Health Services
  • United Healthcare Commercial Products
  • United Healthcare Community Plan Medicaid
  • Volusia Health Network PPO/EPO

  • Adrenal Disease
  • Diabetes
  • Pituitary Disease
  • Puberty Disorders
  • Short Stature
  • Thyroid Disease
  • Thyroid Nodules and Cancer

Research Activities

My research team and I are participate in multiple research projects related to children with type I diabetes as well as disorders of growth. We are very involved in research related to advances in diabetes tecnhology. 

 

I have published more than 70 peer-reviewed papers in medical journals.  I have also published a book related to the management of diabetes during emergencies and natural disasters.  

 

Research Interests:

  • Thyroid cancer, other thyroid disorders
  • Type 1 diabetes
  • Diabetes technology

  • Impact of Type 1 Diabetes in the Developing Brain in Children: A Longitudinal Study; Diabetes Care; (2021).

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  • A Randomized Clinical Trial to Evaluate the Single-dose Pharmacokinetics, Pharmacodynamics and Safety of Sitagliptin in Pediatric Patients with Type 2 Diabetes.; Pediatric diabetes; (2018).

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  • Accuracy of a Fourth-Generation Continuous Glucose Monitoring System in Children and Adolescents with Type 1 Diabetes.; Diabetes technology & therapeutics; (2018).

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  • Persistence of abnormalities in white matter in children with type 1 diabetes.; Diabetologia; (2018).

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  • Mild thyroid peroxidase deficiency caused by TPO mutations with residual activity: Correlation between clinical phenotypes and enzymatic activity.; Endocrine journal; (2017).

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  • Safety of using real-time sensor glucose values for treatment decisions in adolescents with poorly controlled type 1 diabetes mellitus: a pilot study.; Pediatric diabetes; (2016).

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  • Characteristics of youth with type 1 diabetes (T1D) with and without a parent with T1D in the T1D exchange clinic registry.; Journal of diabetes; (2016).

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  • Glucagon Nasal Powder: A Promising Alternative to Intramuscular Glucagon in Youth With Type 1 Diabetes.; Diabetes care; (2016).

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  • Longitudinal Evaluation of Cognitive Functioning in Young Children with Type 1 Diabetes over 18 Months.; Journal of the International Neuropsychological Society : JINS; (2016).

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  • Variations in Brain Volume and Growth in Young Children With Type 1 Diabetes.; Diabetes; (2015).

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  • Longitudinal assessment of neuroanatomical and cognitive differences in young children with type 1 diabetes: association with hyperglycemia.; Diabetes; (2014).

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  • Cognitive functioning in young children with type 1 diabetes.; Journal of the International Neuropsychological Society : JINS; (2014).

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  • Skin and adhesive issues with continuous glucose monitors: a sticky situation.; Journal of diabetes science and technology; (2014).

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  • Evolution of abnormal plasma glucagon responses to mixed-meal feedings in youth with type 1 diabetes during the first 2 years after diagnosis.; Diabetes care; (2014).

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  • Persistently high glucose levels in young children with type 1 diabetes.; Pediatric diabetes; (2014).

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  • Effectiveness of early intensive therapy on β-cell preservation in type 1 diabetes.; Diabetes care; (2013).

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  • Alterations in white matter structure in young children with type 1 diabetes.; Diabetes care; (2013).

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  • Factors associated with microalbuminuria in 7,549 children and adolescents with type 1 diabetes in the T1D Exchange clinic registry.; Diabetes care; (2013).

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  • Extended 6-month follow-up of a randomized clinical trial to assess the efficacy and safety of real-time continuous glucose monitoring in the management of type 1 diabetes in young children aged 4 to <10 years.; Diabetes care; (2013).

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  • Blunted glucagon but not epinephrine responses to hypoglycemia occurs in youth with less than 1 yr duration of type 1 diabetes mellitus.; Pediatric diabetes; (2013).

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  • Neuroanatomical correlates of dysglycemia in young children with type 1 diabetes.; Diabetes; (2013).

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  • High success rates of sedation-free brain MRI scanning in young children using simple subject preparation protocols with and without a commercial mock scanner--the Diabetes Research in Children Network (DirecNet) experience.; Pediatric radiology; (2013).

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  • Lack of association between residual insulin production and glucagon response to hypoglycemia in youth with short duration of type 1 diabetes.; Diabetes care; (2013).

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  • Continuous glucose monitoring in type 1 diabetes.; Endocrine; (2012).

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  • The landmark JDRF continuous glucose monitoring randomized trials: a look back at the accumulated evidence.; Journal of cardiovascular translational research; (2012).

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  • Feasibility of prolonged continuous glucose monitoring in toddlers with type 1 diabetes.; Pediatric diabetes; (2011).

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  • Hemoglobin A1c and mean glucose in patients with type 1 diabetes: analysis of data from the Juvenile Diabetes Research Foundation continuous glucose monitoring randomized trial.; Diabetes care; (2011).

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  • Factors predictive of severe hypoglycemia in type 1 diabetes: analysis from the Juvenile Diabetes Research Foundation continuous glucose monitoring randomized control trial dataset.; Diabetes care; (2011).

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  • A randomized clinical trial to assess the efficacy and safety of real-time continuous glucose monitoring in the management of type 1 diabetes in young children aged 4 to <10 years.; Diabetes care; (2011).

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  • Continuous glucose monitoring in youth with type 1 diabetes: 12-month follow-up of the Juvenile Diabetes Research Foundation continuous glucose monitoring randomized trial.; Diabetes technology & therapeutics; (2010).

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  • Variation of interstitial glucose measurements assessed by continuous glucose monitors in healthy, nondiabetic individuals.; Diabetes care; (2010).

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  • Effects of glutamine on glycemic control during and after exercise in adolescents with type 1 diabetes: a pilot study.; Diabetes care; (2010).

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  • Blunted counterregulatory hormone responses to hypoglycemia in young children and adolescents with well-controlled type 1 diabetes.; Diabetes care; (2009).

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  • The effect of continuous glucose monitoring in well-controlled type 1 diabetes.; Diabetes care; (2009).

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  • Continuous glucose monitoring and intensive treatment of type 1 diabetes.; The New England journal of medicine; (2008).

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  • Prolonged use of continuous glucose monitors in children with type 1 diabetes on continuous subcutaneous insulin infusion or intensive multiple-daily injection therapy.; Pediatric diabetes; (2008).

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  • The accuracy of the Guardian RT continuous glucose monitor in children with type 1 diabetes.; Diabetes technology & therapeutics; (2008).

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  • JDRF randomized clinical trial to assess the efficacy of real-time continuous glucose monitoring in the management of type 1 diabetes: research design and methods.; Diabetes technology & therapeutics; (2008).

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  • Low-fat vs. high-fat bedtime snacks in children and adolescents with type 1 diabetes.; Pediatric diabetes; (2008).

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  • Use of the DirecNet Applied Treatment Algorithm (DATA) for diabetes management with a real-time continuous glucose monitor (the FreeStyle Navigator).; Pediatric diabetes; (2008).

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  • Relative inaccuracy of the A1cNow in children with type 1 diabetes.; Diabetes care; (2007).

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  • The accuracy of the FreeStyle Navigator continuous glucose monitoring system in children with type 1 diabetes.; Diabetes care; (2007).

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  • Prevention of hypoglycemia during exercise in children with type 1 diabetes by suspending basal insulin.; Diabetes care; (2006).

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  • Evaluation of factors affecting CGMS calibration.; Diabetes technology & therapeutics; (2006).

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  • A randomized controlled trial of insulin pump therapy in young children with type 1 diabetes.; Diabetes care; (2005).

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  • Accuracy of newer-generation home blood glucose meters in a Diabetes Research in Children Network (DirecNet) inpatient exercise study.; Diabetes technology & therapeutics; (2005).

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  • Absence of adverse effects of severe hypoglycemia on cognitive function in school-aged children with diabetes over 18 months.; Diabetes care; (2003).

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  • Hyperinsulinemic, hypertrophic cardiomyopathy in infancy.; American journal of diseases of children (1960); (1992).

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