Anthony W. Gannon, MD


Primary Office

Nemours Children's Hospital, Delaware Nemours Children's Hospital, Delaware 1600 Rockland Road Wilmington, DE 19803 Appointment: (800) 416-4441

Get to Know Me

Anthony Gannon, MD, is a board-certified pediatrician and internist who specializes in endocrine disorders for children and adults. His practice is geared towards treatment of complex endocrine disease, endocrine tumors and helping teenagers transition to adult care.

Why I Treat Children

I chose to train as a pediatric endocrinologist because I consider it a privilege and joy to work together with children and their families with the goal of helping them to better understand and control their diseases.I see the purpose of my practice to teach and empower children and families so that they can achieve their goals in treatment and in life. My practice is unique in that I am also a practicing adult endocrinologist. This means I’m able to provide clinical follow-up to children as they become adults, and also to help prepare them, and their families, for the transition into adult clinics.

What I'm Passionate About

I specialized in endocrinology because the hormone systems are complicated, but fascinating, and I think there’s tremendous opportunity to improve the quality of life for patients. I’m interested in working with children of all ages who have complex endocrine disease, including endocrine tumors.I chose to complete separate pediatric and adult training programs so that I could be best equipped to assist children and their families to move more smoothly through the transition process into adult clinics. I am excited to be part of the Nemours Children’s Health System because this has enabled me to partner with Christiana Care Health System to form a true endocrinology transitions program.

How I Try to Make A Difference

Endocrinology is a unique field because there is no single answer for every family, and this allows a lot of room for personalization of care. I think the most valuable tool I have to offer families is to provide education and empower them to manage their diseases and to achieve the goals that are most important to them.

Education & Training


  • Pediatric Endocrinology - Children's Hospital of Philadelphia, 2014
  • Endocrinology - University of Mississippi, 2011

Internship Residency

  • Internal Medicine/Pediatrics - University of Mississippi Medical Center, 2009

Medical/Dental School

  • MD - University of Mississippi Medical Center, 2005

Board Certifications

  • American Board of Internal Medicine/Endocrinology, Diabetes and Metabolism
  • American Board of Pediatrics/Pediatric Endocrinology

Awards & Recognition

  • 2015 Joel D. Klein Faculty Teaching Award
  • 2012 Lester Baker Clinical Fellow Award in Pediatric Endocrinology
  • 2009 Arnold P. Gold Foundation Humanism and Excellence in Teaching Award
  • 2009 Carl G. Evers Society Resident All-Star Award
  • 2009 Med/Peds Teaching Resident of the Year
  • 2006 Nancy Frohn Award in Pediatrics

Insurance Accepted

  • Aetna Better Health PA Kids HMO
  • Aetna HMO
  • Aetna PPO/POS/EPO
  • Amerihealth Caritas Delaware
  • Carefirst MD Community Health Plan Mcaid
  • Cigna/Great West HMO EPO POS
  • Cigna/Great West PPO
  • Delaware First Health
  • Delaware Medicaid/Diamond State
  • Delaware Medicare
  • Devon Health Services
  • Fidelis Care NJ Medicaid HMO
  • First Health/Affordable PPO
  • Geisinger Health Plan Commercial
  • Global Medical Managment DE/PA
  • Health Partners Medicaid/Kidz Partner HMO
  • Highmark Blue Cross Blue Shield of Delaware
  • Highmark Medicaid Health Options
  • Horizon Blue Cross Blue Shield of New Jersey
  • Independance Blue Cross/Amerihealth/Keystone Health Plan
  • Insurance Administrators of America
  • INTEGRA Administrative Group (ClaimsBridge)
  • Interlink Transplant
  • Keystone First Medicaid HMO
  • Lifetrac Transplant
  • Maryland Medicaid
  • Multiplan PPO
  • National Transplant (Humana)
  • New Jersey Medicaid
  • Olympus Managed Healthcare PPO DE/PA
  • Pennsylvania Medicaid
  • Plan Vista/NPPN PPO
  • Preferred Healthcare PPO
  • Private Health Care Systems (PHCS)
  • Star Healthcare Network
  • Three Rivers Provider Network
  • Tricare/Humana Military Health Services/CHAMPVA
  • United Healthcare of the Mid-Atlantic
  • US Family Health Plan

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

Research Activities

I have engaged in several research projects, but my most recent work, since 2010, has been focused on thyroid cancer and thyroid nodules in children.


Because research in children is so spotty on the topic of thyroid nodules, I embarked on a major project to examine the factors that impact the risk of thyroid cancer in children, which will allow us to more confidently determine the best ways to manage children with these nodules. This project is part of my thesis for a Master of Science in Clinical Epidemiology from the University of Pennsylvania Center for Clinical Epidemiology and Biostatistics; the study is ongoing findings should be published in late 2015.


Additionally, I have engaged in a study examining the surgical outcomes of children who have thyroid disease with a specific emphasis on the adverse effects of surgery for different indications.

Medical Interests

  • Adrenal disorders
  • Adrenal tumors
  • Diabetes
  • Disorders of puberty
  • Growth disorders
  • Lipid disorders
  • Pituitary disorders
  • Pituitary masses
  • Thyroid disorders
  • Thyroid masses

  • Yuen, K. C. J., Alter, C. A., Miller, B. S., Gannon, A. W., Tritos, N. A., Samson, S. L., & Kelepouris, N. (2021). Adult growth hormone deficiency: Optimizing transition of care from pediatric to adult services. Growth Hormone and IGF Research, 56. doi:10.1016/j.ghir.2020.101375

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  • Pierce, J., Hossain, J., & Gannon, A. (2020). Validation of the healthcare transition outcomes inventory for young adults with type 1 diabetes. Journal of Pediatric Psychology, 45(7), 767-779. doi:10.1093/jpepsy/jsaa051

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  • Pierce, J., Aroian, K., Schifano, E., Gannon, A., & Wysocki, T. (2019). Development and content validation of the Healthcare Transition Outcomes Inventory for young adults with type 1 diabetes. Journal of Patient-Reported Outcomes, 3(1). doi:10.1186/s41687-019-0163-9

  • Gannon, A. W., Langer, J. E., Bellah, R., Ratcliffe, S., Pizza, J., Mostoufi-Moab, S., & Bauer, A. J. (2018). Diagnostic Accuracy of Ultrasound with Color Flow Doppler in Children with Thyroid Nodules. Journal of Clinical Endocrinology and Metabolism, 103(5), 1958-1965. doi:10.1210/jc.2017-02464

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  • Johnston, D., & Gannon, A. (2017). Pediatric well-differentiated thyroid carcinoma. In Thyroid Nodules and Cancer: A Simplified Case-Oriented Approach (bll 123-133). Opgehaal van

  • Koney, N., Mahmood, S., Gannon, A., Finkelstein, M. S., & Mody, T. (2017). Pediatric Thyroid Cancer: Imaging and Therapy Update. Current Radiology Reports, 5(10). doi:10.1007/s40134-017-0247-3

  • Pierce, J. S., Aroian, K., Schifano, E., Milkes, A., Schwindt, T., Gannon, A., & Wysocki, T. (2017). Health Care Transition for Young Adults with Type 1 Diabetes: Stakeholder Engagement for Defining Optimal Outcomes. Journal of Pediatric Psychology, 42(9), 970-982. doi:10.1093/jpepsy/jsx076

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