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Internal Medicine of Arizona

Integrative and Functional Medicine

Integrative medicine is an approach to care that puts the patient at the center and addresses the full range of physical, emotional, mental, social, spiritual and environmental influences that affect a person’s health. To schedule an appointment with Melissa Frazelle, FNP please click here:

Functional medicine determines how and why illness occurs and restores health by addressing the root causes of disease for each individual.


Interests and conditions treated: 

Key points:

To schedule or discuss an appointment click here:

Resources to better understand Integrative and Functional Medicine: 

Institute for Functional Medicine (IFM)

Integrative Medicine

Dr. Mark Hyman

Hyman is a family practice physician who is an internationally-recognized advocate and pioneer of Functional Medicine. He coined “The Pegan Diet” and has a podcast, The Doctor’s Farmacy, where he discusses his passion for real food, nutrition, and wellness on an individual level, as well as global scale. 

Dr. Andrew Weil

Weil is a world-renowned leader and “grandfather” of integrative medicine. He founded the Center for Integrative Medicine at the University of Arizona and popularized the Anti-Inflammatory Diet. 

Dr. Peter Attia

Attia is a general surgeon/NIH-trained physician, who has a podcast called The Drive, focusing on the applied science of longevity, the extension of human life and well-being. He is known for his deep dive conversations surrounding fasting, ketosis, and the prevention of heart disease, dementia, and cancer.

Dr. Sara Gottfried

Gottfried is a board-certified gynecologist, physician-scientist, speaker, and author with expertise in women’s hormones, metabolism, gut-brain issues, and healthy aging. 

Dr. Izabella Wentz

Wentz is a pharmacist, speaker, and author who has dedicated herself to spreading awareness about lifestyle interventions and the root causes of autoimmune thyroid disease. 

Brene Brown

Brown is a social scientist who studies shame, vulnerability, courage, and leadership. 

She teaches us to live whole-heartedly with a focus on self-love, mental health, and connection.

ProLon Fasting Mimicking Diet (Longevity Diet)

ProLon is the first clinically tested fasting meal program based on over 20 years of scientific research sponsored by the National Institutes of Health and the USC Longevity Institute. 

The Fasting Method

Ziva Meditation




Preventative Care, Physical Examinations, Treatment of minor injuries, short-term illnesses, and more.


IMA has a CLIA certified, comprehensive reference laboratory onsite for the convenience of our patients.


IMA has an onsite Radiology facility with a full time Radiology Technician available during office hours.


IMA is equipped with updated cardiovascular diagnostic equipment, including EKGs, ICG testing, and Treadmill Stress Testing.
Internal Medicine of Arizona contact us (602) 522-1900