Meet Our Medical Weight Loss Doctors Scottsdale, Phoenix, Glendale and Chandler, Arizona

Craig Primack, MD, FACP, Robert Ziltzer, MD, FACP, Melody Rodarte, DO, FACP and John de Guzman, MD are medical weight loss doctors with a passion for healthy living. They understand what it takes to achieve and maintain a healthy lifestyle and have extensive experience helping people achieve weight loss success.

Craig Primack, MD, FACP

Obesity Medicine Certified Physician

Dr. Craig Primack, MD
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Dr. Craig Primack is a native of Chicago, but has been practicing medicine in Arizona since 1997. He is board certified in Bariatric Medicine, Internal Medicine and Pediatrics, and is considered one of Phoenix Magazines “Top Doc’s,” and Scottsdale 101 Magazine’s “Top 101 Doctors.”
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Robert Ziltzer, MD, FACP

Obesity Medicine Certified Physician

Dr. Rob Ziltzer, MD
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Dr. Robert Ziltzer has been practicing medicine in Scottsdale for over 20 years. He is board certified in Bariatric Medicine. Dr. Ziltzer was named one of Phoenix Magazines “Tops Doc’s” as well as Scottsdale 101 Magazines “Top 101 Doctors.”
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Melody Rodarte, DO, FACP

Obesity Medicine Certified Physician
Chandler Office

Dr. Melody Medawar Rodarte
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Dr. Melody Medawar Rodarte is a native of Arizona and is board certified in Internal Medicine and Bariatric Medicine. She is passionate about helping people overcome obesity-related diseases like diabetes, joint pain and heart disease.
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John de Guzman, MD

Internal Medicine Physician
Phoenix Office

john de guzman
Dr. de Guzman was born and raised in Wisconsin and has lived and practiced Internal Medicine in Central Phoenix for 20 years. He has been named to Phoenix Magazine’s “Top Doc” list on multiple occasions.

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Paul Sarmiento, MD

Physician
Glendale Office

Paul Sarmiento
Dr. Paul Sarmiento, MD is a physician at Scottsdale Weight Loss Center in Glendale. Dr. Sarmiento is excited for the opportunity to help patients control their weight-related illnesses and reach their weight loss goals.

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Katherine Duncan, MD

Physician
All Offices

Katherine Duncan MD
Dr. Katherine Duncan, MD approaches obesity as a chronic disease that is most effectively treated through comprehensive care. She is committed to stay at the forefront of treatments for this challenging disease.

Learn more about Dr. Duncan