Meet Our Weight Loss Doctors

We are medical weight loss doctors with a passion for healthy living. We 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

Founder and Managing Member

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

Learn About Dr. Primack

Robert Ziltzer, MD, FACP

Obesity Medicine Certified Physician

Founder and Managing Member

Dr. Robert Ziltzer has been practicing medicine in Scottsdale for over 20 years. He is board certified in Obesity Medicine. Dr. Ziltzer is frequently named one of Phoenix Magazines “Tops Doc’s” as well as Scottsdale 101 Magazines “Top 101 Doctors.”

Learn About Dr. Ziltzer

John de Guzman MD

Obesity Medicine Certified Physician

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.

Learn About Dr. De Guzman

MEET OUR NURSE PRACTITIONERS

Cally Smith, FNP-C

Specializing in Obesity Medicine

Cally Smith has a passion for weight loss and empowering patients to feel their best.

Learn About Cally

Diana Bone, FNP-C

Specializing in Obesity Medicine

Diana has been treating patients with chronic diseases such as diabetes, high blood pressure, and heart disease for 20 years.

Learn About Diana