
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.
Clinical Leadership

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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Krystal Adams, MSN, FNP-BC, LSO
Clinician
Krystal Adams is a board-certified Family Nurse Practitioner with a strong foundation in both conventional and integrative medicine.
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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.
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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.
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Ashley Stuver, MS, INHC
Health Coach
Ashley brings a compassionate, evidence-informed approach to her role as a Health Coach at Modern Thyroid Clinic. She has a background spanning functional nutrition, herbal medicine, and wellness coaching.
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Evan Chase, CPT, PPCES
Health Coach
Evan brings a warm, grounded, and deeply supportive approach to her role as a Health Coach at Modern Thyroid Clinic. Her background spans personal training, holistic health coaching, and nutrition.
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Hannah Morales
Medical Assistant
Hannah brings a warm, patient-focused approach to her role as a Medical Assistant at Modern Thyroid Clinic. With a background rooted in both women’s health and aesthetics, she offers a unique blend of clinical expertise and genuine compassion.
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Caroline Zavala
Medical Assistant
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.
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Cerena Coombs
Medical Assistant
Cerena brings a deep passion for health, wellness, and supporting women through every stage of life to her role at Modern Thyroid Clinic, helping patients feel seen, heard, and cared for.
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Hayley Adams
Chief Operating Officer
Hayley brings both personal experience and professional passion to her role as COO, helping patients navigate healing with clarity, empathy, and purpose.
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Joy Blackburn
Project Manager, Executive Assistant
Joy is the organizational heart of Modern Thyroid Clinic—bringing focus, compassion, and a can-do spirit to everything she does.
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Amelia Stephens
HR & Operations Manager
Amelia is a skilled HR and Operations Manager with over a decade of experience, providing thoughtful, compassionate support to patients navigating thyroid care and chronic illness.
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Romé Smith
Executive Assistant to Karl Krummenacher
Romé's diverse background has equipped her with strong organizational skills, adaptability, and the ability to manage complex operations with ease, making her a reliable and strategic partner in fast-paced environments.
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Sarah Prender
Operations Assistant
Sarah brings over 20 years of experience as an executive and personal assistant, where she mastered the art of organization, communication, and proactive problem-solving.
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Jolie Leslie
Customer Service Administrator
With a diverse background in Human Resources, Marketing, and Sales, Jolie brings a unique perspective to patient care -
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