Our Team
Conveniently Located To Serve Scottsdale, Phoenix, Chandler, and Glendale
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.
Meet Our Team
Robert Ziltzer, MD, FACP, FAAP, FOMA
Founder and Managing Member
Dr. Robert Ziltzer has been practicing medicine in Scottsdale for over 30 years. He is board certified in Obesity Medicine. Dr. Ziltzer is frequently named one of Phoenix Magazines โTops Docโsโ as well as Scottsdale 101 Magazines โTop 101 Doctors.โ
Craig Primack, MD, FACP, FAAP, MFOMA
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 โTop Docโs,โ and Scottsdale 101 Magazineโs โTop 101 Doctors.โ
Dr. John De Guzman
Dr. de Guzman had been treating patients for chronic health issues including high blood pressure, high cholesterol, diabetes, heart disease, and joint pain for years in his former internal medicine practice.
Diana Bone, FNP-C
Diana Boneโs expertise and compassion will help you achieve your goal weight. Diana has been treating patients with chronic diseases such as diabetes, high blood pressure, heart disease, fatigue and depression for 20 years.
Jillian Swope, DNP, FNP-C
She holds two bachelor’s degrees from the University of Alaska system and earned a master’s degree from Northern Arizona University in 2011. She also completed her post-master’s family nurse practitioner from NAU and received her doctorate from Frontier Nursing University, the oldest program in the country.
Kimberly Roberts, DNP, FNP-C
Kimberly Roberts is a dedicated and compassionate weight loss clinician with a passion for helping people achieve their health and wellness goals.
Kristen Ash, FNP-C, FNP-BC
Kristen Ash, FNP-C, FNP-BC, is a dedicated Nurse Practitioner at Scottsdale Weight Loss Center, where she is passionate about helping patients build sustainable habits and achieve long-term weight management success.
Lost 44.5 lbs
"I had no trouble adhering to the meals and they really helped catapult my progress! The classes were so beneficial to me because they helped change my thinking about how I viewed health, nutrition, and fitness.
I will always have my relationship with Scottsdale Weight Loss Center. They truly helped me change my life forever." Read More
Lost 60 lbs
"Dr. Ziltzer and everyone who I have come in contact with at the Scottsdale Weight Loss office have been so encouraging and I look forward to seeing them each week. It is now a year and 2 months later since I started. I am down 60 lbs., which is the average amount a 9-year-old weighs, it is crazy to think I lost a whole person! I feel amazing, I hit my goal weight in November 2021 just before Thanksgiving. Nothing on my body hurts anymore..." Read More
Lost 66 lbs
"The best thing I did was call the Scottsdale Weight Loss Center. I have a lot more energy, I'm not hungry, and it feels great.
You can take it from me that this is a program that produces results. The staff is always positive, supportive, and never judgmental.
Your visits always result in positive reinforcement, no matter if you had a good week or a bad week." Read More
Lost 61 lbs
"Here I am at the lowest I have been since high school weighing in at 155lbs. I have lost 61.5lbs, 48.5lb of body fat gone, BMI of 39 when I started, to 27.9, and of course at body fat % of 47.1 to 34.6%. I told myself by my 30th birthday I wanted to be confident in the way I look and I owe it all to SWLC. The entire staff is so welcoming and they are rooting for you just as much as you are rooting for yourself..." Read More
