Meet our team
All of our staff's lives have been directly affected by a thyroid issue.We partner with you to help you get your life back from your thyroid condition. We're not only skilled professionals, we're Modern Thyroid Clinic patients ourselves, and have been on the same journey you're on right now.
Executive Team
McCall McPherson, PA-C
CEO - Founder
Meet the heart behind Modern Thyroid Clinic—McCall McPherson, a provider who’s walked in your shoes and built a clinic to change lives.
Hayley Adams
COO
Hayley brings both personal experience and professional passion to her role as COO, helping patients navigate healing with clarity, empathy, and purpose.
Joy Blackburn
Project Manager, Executive Asst.
Joy is the organizational heart of Modern Thyroid Clinic—bringing focus, compassion, and a can-do spirit to everything she does.
Clinical Leadership
Cassie Smith, MD
Chief Medical Director
Dr. Cassie combines clinical precision with personal insight to lead Modern Thyroid Clinic’s medical team with expertise and heart.
Katie Keller, MD
Katie Keller, MD
Chief Medical Officer
Dr. Katie leads with clinical insight and whole-person care, helping Modern Thyroid Clinic redefine how thyroid and hormone health is approached and treated.
Shawn Tassone, MD, PhD
Chief Medical Officer
Dr. Shawn is a pioneer in integrative women’s health, blending traditional medicine with mind-body healing to deliver transformative care.
Clinicians
Yari Tran, PA-C
Clinician
Yari brings curiosity, compassion, and a whole-person approach to her role as a clinician at Modern Thyroid Clinic, helping patients uncover and address the root causes of their symptoms.
Laurie Hutcherson, PA-C
Clinician
Laurie blends a rich clinical background with a global perspective, helping patients uncover root causes and reclaim wellness through personalized, functional care.
Melody Volz, FNP-C
Clinician
Melody brings both clinical expertise and personal experience to her thyroid and hormone care—offering patients individualized support rooted in empathy and science.
Hillary Mayers, DNP, FNP-C
Clinician
Hillary Mayers, NP, combines advanced training, personal experience, and heartfelt commitment to help patients reclaim their lives from thyroid and hormone dysfunction.
Brandy Valentino,RN, WHNP, CNM
Clinician
Brandy brings deep expertise and heartfelt dedication to her work—helping women achieve lasting wellness through compassionate, root-cause care.
Nikki Abelow, APRN
Clinician
Nikki blends clinical experience and personal insight to deliver compassionate, root-cause care that empowers patients to reclaim their health and well-being.
Jessica Strauss, DNP, FNP-C
Clinician
Jessica brings a thoughtful, patient-first approach to thyroid and hormone care—empowering individuals to feel seen, understood, and fully supported on their health journey.
Health Coaches
Ann Tucker
Health Coach
Ann Tucker is a compassionate Health Coach, helping patients feel supported, empowered, and confident as they take charge of their health and wellness journey.
Mariah Hall
Mariah Hall
Health Coach
Mariah brings over a decade of clinical experience and a passion for functional medicine to her role—offering patients personalized care rooted in empathy, education, and whole-body wellness.
Medical Assistants
Amelia Stephens
Medical Assistant
Amelia is a skilled Medical Assistant with over a decade of experience, providing thoughtful, compassionate support to patients navigating thyroid care and chronic illness.
Elise Murguia
Medical Assistant
Elise is a dedicated Medical Assistant whose early hands-on experience at Modern Thyroid Clinic has inspired her future in functional medicine and thyroid care.
Weight Loss
Hannah Skalski
Director of Weight Loss Operations & Pharmacy Programs
Hannah leads Weight Loss Operations and Pharmacy Programs at Modern Thyroid Clinic with heart, precision, and a mission to help patients feel informed, supported, and empowered in their care.
Sally Sykes
Functional Medicine Certified Health Coach
Sally brings a wealth of knowledge and personal passion to her role—empowering patients to reclaim their health through education, lifestyle change, and sustainable weight loss.
Administration
Bre Higgins
Patient Support Specialist
Bre Higgins brings over 15 years of healthcare and customer service experience to her role—offering every patient the empathy, clarity, and support they deserve throughout their care journey.
Caroline Zavala
Administrator / Scribe
Caroline Zavala supports both operations and patient care at Modern Thyroid Clinic, bringing focus, drive, and a passion for functional medicine to every detail of her work.
