Dr. Ziltzer is great! Helped me for years now!

My experience at the Scottsdale weight loss center at arrowhead has been life-changing. I was nervous about starting, but the medical team took the time to do a thorough check-up and explain the science behind the program. They don't offer a 'one size fits all' solution; instead, they customized a plan that worked for my body and health needs. The professionalism here is superior, and the results speak for themselves—my blood work has never looked better! Diana is simply amazing!

SWLC is so helpful. Very knowledgeable people and not judgmental. I recommend them to anyone struggling with weight.

Very considerate staff. Explained the system in understandable terms.

Great place 30 lbs.and counting thank you And now it is over 40 lbs. and counting thank you great job

My weight loss is going well because of Scottsdale Weight Loss Center. I couldn’t do it without them

Excellent service, knowledgeable staff, Dr. Z is fantastic!

Dr. Primack is simply the best! With his support I lost 65 pounds 16 years ago and over the years I was able to maintain my weight loss within 10 pounds. Now, on a path to losing those 10 pounds, Dr. P is again providing the support I need to get me back to my goal weight set 16 years ago! From the first 65 to now, none of my success would have been possible without Dr. P. His staff is also great - professional and encouraging.

Scottsdale Weight Loss Center at the Biltmore truly changed my life. I didn’t just lose the weight — I got my life back. The constant aches and pains are gone, I’m no longer out of breath going up the stairs, and for the first time in a long time, I have real energy again. What made the biggest difference was the people. Every step of the way, I felt encouraged, supported, and genuinely cared for. Their kindness and belief in me helped me believe in myself. I am so grateful for this program and couldn’t recommend it more.

I have been a client before and was very satisfied. Diana Bone, FNP is very compassionate and wants everyone to succeed. If something doesn’t work, try something else. She is very committed to her patients. All her staff are very kind and professional.

I’ve been on a lot of diets, but I have found this one is easy to follow. I enjoy that I have to go in once a week and the doctor and I have a conversation. It works great for me. I recommend it.

My experience with the Scottsdale Weight Loss Center in Phoenix has been amazing! The program is comprehensive and patient friendly. I highly recommend the program if you want to lose weight in a supportive environment.

I go to the Biltmore office and have seen marvelous results (43 lbs/19.5kg lost in 9 weeks). That alone would be enough for five stars for me. Beyond the large, and healthy, weight loss is the outstanding care. From the time I walk in for an appointment until I leave afterwards, every single staff member is on the ball and engaged. They are thoughtful, provide helpful suggestions, and make every visit a display of absolutely outstanding patient care. I really love seeing people excel at what they do, and this team excels. Update: I reached my goal in June of 2025 and I am back to my college graduation weight. I have been able to maintain it for the past several months, and I continue to be very happy with the results.

Returning because of the great support personable provider and educational meetings. Welcoming atmosphere.

I’ve been going to Scottsdale Weight Loss Center since the end of July. I do like the weekly check-ins, I try to go in person to make myself more accountable. I also like the fact that I get to see a doctor every other visit. It’s reassuring to know that I’m on the right path and I’m doing things the right way. Everyone I interact with there is very friendly. I would recommend Dr. de Guzman to anyone— he is so nice and supportive— I never feel rushed when I visit.

First class and very professional in every way.

Do what they say, and get excellent results. Very friendly too! A+ de Guzman is awesome!

This is an amazing organization led by Diana Bone. Diana and her staff are wonderful, caring people who will work with you at your own pace to help you find success. I don't use the terms amazing and wonderful lightly. Diana and her team have helped me to truly transform my life in a dramatic way. As of this time I have lost about 230 Lbs on this program and have maintained this for 2 years now. I eat regular meals and still use meal supplements about twice a day. I have developed much better eating habits, and I am in control. I buy and wear the clothes I like at any department store, I can sit and feel comfortable anywhere I go. My former anxieties and worries about social settings are non-existent. I feel healthier and I am living a great life as a result of my work with Diana and her team. If you are looking for a change and you need someone to partner with you and help you succeed, I give this office and this program my highest recommendation. I began working with Diana about two years ago now. When I started my weight was at an all-time high. I was using a walker, had constant pain and had been told by my doctor that my only option was Bariatric surgery to lose weight. I felt depressed and my quality of life was not good. I was out of breath going up stairs and experienced health concerns and anxiety on a constant basis. I felt a bit hopeless and that my life was essentially going to end early. (Sorry for the negativity but it was a tough time for me!) On my primary Drs advice I went through the Mayo Clinic bariatric Education program. For me it was so helpful to understand what Bariatric surgery does to your body and its overall purpose. For some folks it’s a godsend, ultimately for me I took another path. What the Bariatric program showed me is that this surgery is basically designed to create a physical impediment to you eating more than you should. They want you to eat in tiny increments on a regular basis through the surgical change in your stomach size so that you will lose weight. I became familiar with terms like dumping and other potential issues that frankly scared me. Ultimately, I concluded that I could make up my mind and my will to “eat” and live “as-if” I had gone through the actual surgery, and if I could do that, this would accomplish the same basic goal. (In practice harder than it sounds but I was committed, and the basic reasoning seemed sound to me!) Fortunately for me I then called the Scottsdale weight loss center looking for an alternative and spoke with someone who had been through the program and helped me understand their program and their process. I was able to meet with Diana and her team, get my initial evaluations and sit down and discuss my goals. Diana put me at ease and said look we can help you succeed, and we will move at your pace. I expressed my level of commitment and Diana put together a program that I lived by. Diana and her team basically design an eating program with the use of meal replacements that you use to live within your calorie and weight loss goals. With a little creativity you can make these meals really good, and the program is absolutely sustainable and enjoyable. My first week I lost 13 lbs. It was an amazing initial result and set the tone for me to be committed and succeed. These people helped save my life and my quality of life is so much better now. If you feel committed to improving things and solving this puzzle and you are looking for a partner and a program to help you succeed, then I know Diana Bianca and Marcella will support your efforts and help you meet your goal. They are the best!

Always helpful excellent care

We worked hard to find the combination that worked right for me. Dr. de Guzman is great at customizing a plan to maximize results.

Diana and the team at the Glendale office have helped me surpass my weight loss goals. I never thought I’d feel this healthy again after having spine surgery. Thank you all so much!

The staff are friendly and caring. My doctor (Dr. Ziltzer) takes his time, and tries to see me through the ups & downs of this life changing process . Thank you 😊

I highly recommend Scottsdale Weight Loss Center Glendale. From the moment you walk in you are greeted by Marcella who is extremely kind in checking you in. Then Bianca takes you to the back and takes your labs as well as does your weekly weigh ins. Finally you are met by Dr Diana Boone who goes over your weight loss program and helps you on your life changing journey. I am so grateful to have found Dr Boone and staff at the Scottsdale Weight Loss Center Glendale

Everyone is very professional and still very personable

SWL has been a God send to me! Dr. Guzman & staff especially Lilia & Bianca! They’re so supportive & professional I have lost approx 50 pounds over the year at my own pace.

They are super nice, always ready to help you, listen to your and the most important, motivate you !

Diane Bone and staff are amazing. I feel supported and heard and most of all comfortable. Diane is great at talking you through the ups and downs of the weight loss journey. She is knowledgeable and always has great suggestions when you need them. I feel like I have my very own cheerleader!

Started going to SWLC in January 2025, and have been really impressed with its service and professionalism. The staff and medical personnel have been top notch. If you want a solid, medically-supervised weight loss program, this is the place to go!

Everyone there is helpful and encouraging. They are all clearly engaged in the welfare of their customers and that helps us stick to our goals. Dr Primack has great motivating suggestions for when the going gets tough. And celebrates our successes. I highly recommend this business.

I cannot say enough good things about this practice, Dr. Ziltzer, and the staff. Everyone is incredibly positive and supportive. Dr. Z is simply a god-send to people struggling with obesity.

I can't say enough great things about SWC. The staff, including Diana B, and Marcel were exceptional. I participated in the program for 12 months and lost a total of 78lbs. It was easier than I could have ever imagined. Mainly because it made sense, was reasonable, and there was so much support. The program, tools, education, meals/meds, humor and unconditional support made all the difference when compared to any other program I have been part of. Thanks to everyone involved for making the impossible, quite possible.

It’s been over a year since I began my health journey and I couldn’t be happier. Healthier than I’ve been in 15 years!

In 3 months, I'm AT GOAL!!! losing a total of 33 lbs!!! Whew! That didn't take long at all! You, too, can have your biggest issue in the morning being "WHAT TO WEAR TODAY"!!! I'm no longer feeling like a stranger in my closet!! I also didn't realize how unhappy I was until I became GIDDY about Shopping!! The Staff are incredibly supportive, and so friendly! I so appreciate Dr. Z's office visits and hearing about my health returning to me! I can't recommend them enough!! UPDATE: have now lost 43lbs and have never felt better!!! I’m getting a lot of support through maintenance & great ways to stay focused on maintaining… which translates to: not gaining it back!!! I couldn’t ask for a better team! If you’ve tried everything & it doesn’t work, go to Scottsdale Weight Loss Center. It will be the best decision of your life. Promise!

The staff were professional and friendly. They made me feel as ease and answered all of my questions. I am so thankful to have them as an excellent resource to assist me in my weightloss journey and long term health!

Friendly profesional service. They make you enjoy your visits and the program works

Great doctors and office staff. Thank uou

Love Dr. Ziltzer and his team. Very attentive and supportive. Down 60+ lbs. and I feel great.

Dr. de Guzman is fantastic. The staff is excellent. The entire weight loss program is top notch. A plus.

The staff is excellent, the service is always professional and on time, and they are always available to talk to you if you have any questions, either during your appointment or anytime thereafter. As a result of her guidance,I have been very successful in my weight loss program. I therefore strongly recommended The Scottsdale Weight Loss Centerto anyone who seeks professional care for losing weight.

I so appreciate all the support and success I have with SWLC!! The team at the Glendale office are the best! Thank you!