Dr. Leslie A. DeGasparis, ND

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Dr. Leslie A. DeGasparis, ND


Endocrinology, Diabetes & Metabolism | Female

Seattle Advanced Thyroid Health 155 NE 100th St Ste 402, Seattle, WA 98125 Get Directions
(206) 925-3525

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Care Philosophy

"My philosophy is that standard testing does not show the whole, definitive picture – I take the time to get to know your health goals and concerns, do thorough and detailed testing and then together create a plan that gets you results. It has been very rewarding over the years to collaborate with all my patients to help find the answers they have been seeking. I am highly dedicated to personalized and comprehensive care and the outcomes that can significantly improve your life. I like having a partnership with my patients - I have the medical knowledge and you have your own personal knowledge – so combined we are able to get to the root of any health issues you are experiencing."Read more

Personal Bio

Patients often come to Dr. Leslie after seeing several doctors for hormone, thyroid and nutrition issues and have still not...Read more

Dr. DeGasparis' Experience


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Dr. DeGasparis' Reviews

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  • How well provider listens and answers questions
  • Spends appropriate amount of time with patients
Dr. DeGasparis' Office & Staff
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    Under 10 minutes (5)
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in Tulalip, WA |
She is knowledgeable, smart, patient and kind! What a perfect combination for a doctor.
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  • Endocrinology, Diabetes & Metabolism

Conditions Treated

Dr. DeGasparis says..

Dr. Leslie often hears from her patients 'you get it' and that is because conventional medicine misses 2/3 of the thyroid cases due to inadequate testing. Dr. Leslie DeGasparis takes the time to listen to how you are truly feeling in order to make an accurate diagnosis and create a treatment plan that works.  Thyroid problems affect millions of Americans on a daily basis, especially women, and Hashimoto's hypothyroidism is the most common autoimmune condition in the United States.  Dr. Leslie makes it her life's work to find and help people suffering with these issues.With over 13 years of experience and research, she has found that thyroid problems are commonly under diagnosed or poorly managed by conventional approaches. Standard testing without the right analysis is often inadequate and patients are told their test results are "normal" when patients know that there is still something not right with their health. 

  • Comprehensive medical consultations
  • Expert nutrition counseling
  • Nutrition group demos
  • Comprehensive thyroid testing via exam & bloodwork
  • Food allergy and sensitivity testing
  • Environmental allergy and sensitivity testing
  • Blood chemistry testing including expanded annual bloodwork
  • Adrenal and hormone testing
  • Nutritional testing
  • Pharmaceutical grade supplements onsite
  • Supplement orders & shipping
  • Prescription medications when appropriate
This information was supplied by or on behalf of the provider.
  • Autoimmune Diseases
  • Depression
  • Diabetes Type 2
  • Epstein Barr Virus-Related Fibromyalgia
  • Fatigue
  • Fibromyalgia
  • Hashimoto's Disease
  • Headache
  • Hormone Imbalance
  • Hyperlipidemia
  • Hyperthyroidism
  • Hypothyroidism
  • Insomnia
  • Migraine, Hormone-Induced
  • Postpartum Depression
  • Rheumatoid Arthritis-Related Fibromyalgia
  • Sleep Disturbance-Related Fibromyalgia
  • Thyroid Disease
  • Thyroiditis
  • Weight Gain
  • Weight Loss

Procedures Performed

  • Adrenal Fatigue Correction 
  • Allergy Testing
  • Bioidentical Hormone Replacement Therapy
  • Detoxification
  • Diet Counseling
  • Dynamic Endocrine Function Test
  • Food Sensitivity Testing
  • Hormone Replacement Therapy
  • Hormone Therapy, Men
  • Nutritional Counseling
  • Thyroid Hormone Balancing
  • Thyroid Nodule Evaluation
  • Wellness Examination

Background Check

  • n/a
    Malpractice Claims not available

    Healthgrades does not collect malpractice information for Washington.

    What is medical malpractice
  • 0

    No sanctions history found for the years that Healthgrades collects data.

    What is a sanction or disciplinary action
  • 0
    Board Actions

    No board actions found for the years that Healthgrades collects data.

    What are board actions


  • Medical School
    Bastyr University

    Graduated in 2003

  • Internship Hospital
    Natural Healthcare Nw

    Completed in 2004

  • Residency Hospital
    Seattle Natural Family Medicine

    Completed in 2005

  • Undergraduate School
    University Of Washington

    Graduated in 1997

Awards & Recognition

  • Awards & Honors

    Dr. DeGasparis has no awards or honors listed.

  • Media & Publications

    Dr. DeGasparis has no media or publications listed.

Languages Spoken

  • English

Memberships &
Professional Affiliations

Dr. DeGasparis does not have any memberships or affiliations listed. If you are Dr. DeGasparis and would like to add memberships or affiliations, please update your free profile.