Michael Feiz, MD
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Michael Feiz, MD
A highly effective weight loss procedure where the size of the stomach is reduced 75 to 80%, leaving it looking like a sleeve or a tube. This process is aimed to achieve the same results as sleeve gastrectomy, but here even smaller incisions are made. We cater to people who have undergone any banding procedure and want to reverse it to sleeve gastrectomy.

The process supports weight loss by impacting the way your small intestine and stomach handle the food. Our experts know the true art of placing a band on the top of the patient's stomach to limit the amount of food that he/she can consume. If you have gallstones and require treatment, you have landed at the right place, as our experts have ample experience in performing such surgeries.
Reviews (22)
Reggie Wynn
Reggie Wynn
Oct 30, 2021
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This place is first class when it comes to taking care of their patients. I had the pleasure of working with Itzel Guzman. Her official title is Patient Care Coordinator however they should change it to Wonder Woman. She was on top of all the details before and after my procedure. She even responds to my email in a timely fashion. Working with her made this time which is stressful less stressful. Knowing that I could always go to her is awesome feeling. The rest of the team is awesome too. Dr. Fiez has been helpful and explaining things before and after my procedure. He even called me on a Sunday
Megan T.
Megan T.
Aug 03, 2021
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Dr. Feiz and his team made the process fast and easy! I was walked through the process step by step by his health coordinators who are always available and quick to respond. I'm one week post-op and down 20 lbs.
Chuck
Chuck
Jul 24, 2021
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Dr. Feiz called me and explained in great detail the various forms of treatments for Achalasia as it pertains to my case, the pros and cons of each treatment, and recommended next steps. He answered all of my questions thoroughly, and provided me with the confidence and education I needed to pursue treatment.
Diana K.
Diana K.
Jun 05, 2021
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Dr. Feiz and Dr. Rim have been amazing surgeons. The after care and follow up they provide their patients is amazing. I had my surgery 6 months ago and I have lost 80 pounds already. My husband and cousin have seen my amazing results and have surgery scheduled this month. Honestly it is the best decision I have made for myself. I am so happy with my results. I feel healthier than ever. I have more energy and I am happier with myself.
A. Mitchell
A. Mitchell
Dec 11, 2020
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I definitely regret having my surgery done through this company i mean it wholeheartedly I would not recommend this place
CaliDiva FourLife
CaliDiva FourLife
Nov 30, 2020
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I contacted the office to schedule an appointment. The staff was friendly and professional. This is a very busy office so I waited a month for an appointment. I received a call the day after my scheduled appointment time and had a very brief conversation with Dr. Rim. I was on an informational conference call and we placed our phones on mute. At the end of the call Dr. Rim stated that someone would call later that day to answer any questions I may have. I called the next day and stated that I did not received a call back. The person I spoke with was apologetic and scheduled time for the Dr. to
Shonna C.
Shonna C.
Oct 20, 2020
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From my first day contacting his office to today I have had an amazing experience. Both doctors are wonderful. And their staff is even more wonderful. Especially Itzel Guzman. She handled everything for me every step of the way. Couldn't be more pleased with my entire experience. My surgery was a breeze considering it is major surgery. I healed and have had nothing but continued weight loss. Best decision I've ever made.
Alexandra F.
Alexandra F.
Oct 20, 2020
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July 17, 2019 I had my gastric sleeve surgery and it was an amazing experience...

I am 32 years old and I have 4 children and was 5'6 210 lbs I've dieted and tried all I could for 5 years. Nothing was working I couldn't drop pass 189 lbs. the day of my surfing was 210lbs and was so ready. Surgery went great. Recovery was good tough but went smooth here i am a year and 3 months post opp I am weighing 145-148lbs. I feel healthy and full is more energy. I am so grateful to have had Dr. Rim and Dr. Feiz cross my path because without them I'd still be struggling with my weight
Anthony Melleka
Anthony Melleka
Aug 26, 2020
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Dr. Feiz is super helpful and everything that he says he is. I wouldn't believe any negative reviews. I'd definitely recommend him to my friends or family! Thanks guys!!
Annette S.
Annette S.
Feb 28, 2020
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I started at 250 ! 3 months later i am 190 and pregnant. Whoops !! Not planned but blessed in many ways and to have Dr. Rim & Dr.feiz as my doctors made everything about my journey worth it . They made sure after I had my baby that I got back on track. For the women who are worried about pregnancy after sleeve let me tell you that my baby is super healthy. She 95th percentile in growth. Thanks to my sleeve I made the right food choices for her.
3 months postpartum and weighed 170. Keeping up with your follow up visits is very important. Highly recommended the team. Great communication. The
Anna E.
Anna E.
Feb 27, 2020
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Dr. Feiz and Dr. Rim and their staff have been the best thing that can over happen to me. Overall their team has been amazing, very helpful. I am 100% happy that they are my Doctors. They are the reason I can see myself having a better future with this life-changing decision.
Robert B.
Robert B.
Feb 10, 2020
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Well it's been almost 7 years now since my surgery and I feel great. I haven't had any problems or issues and I actually have family members who went and the surgery themselves. Just want to send out an update and give a BIG THANK YOU TO Dr. Feiz and his Staff.

I would recommend Dr.Feiz to anyone wanting to lose weight, feel better and live life healthier.
Robert Lozano
Robert Lozano
Jan 29, 2020
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I just want to thank Dr Feiz and Dr Rim for saving my life!! You have given me hope! I love being able to go and spend time with my grandkids and not be embarrassed to be out in public! I started this at 411lbs and now weight 250lbs!! Thank you again!
Jaclyn C.
Jaclyn C.
Apr 13, 2019
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Anyone know if Dr. Feiz is single? Asking for a friend.

just saying. Clean looking office.
Sirun G.
Sirun G.
Mar 20, 2019
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Love this office and doctor! Accommodating and very friendly staff! Really walked us through all the steps to get the gastric sleeve done. Better than any other office we went to for the surgery
Melody S.
Melody S.
Feb 13, 2019
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I had a lap band by a different doctor in 2005 and a replaced band in 2009. I've had many different doctors fill the band but had issues with other doctors. Based on the positive reviews I came to Dr. Feiz. His office was very friendly. I also really liked how he did the band adjustment! It was MUCH different than any other doctor and MUCH better than just guessing! I was very happy with my experience and I look forward to continuing my care with him.
Doris Somerville
Doris Somerville
Oct 18, 2018
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All the Reviews are Great and encouraging!!! Do they have online chat for asking questions
Stephanie Pemberton
Stephanie Pemberton
Jan 20, 2018
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If you want a team that goes above and beyond for you choose Dr Feiz! Dr Feiz and Dr Rim preformed my gastric sleeve 5 months ago and have been there for me every step of the way no issue was to small for one of them to reach out to me day or night! Not only are they AMAZING surgeon​s they have surrounded them selves with hospitals and partners that are outstanding! Last night I was taken the the hospital in upland where I live and needed an emergent hernia repair, after contacting Dr Feiz he arranged for me to be transferred by ambulance to a hospital where he could take care of me at 1130 pm
Corinna Perez
Corinna Perez
Oct 30, 2017
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Dr Feiz and his group are excellent. I had sleeve in Feb and they are all supportive and helpful.He is such a good doctor and he cares .10+++stars
Kary W.
Kary W.
Sep 22, 2017
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Update: I've now lost enough weight to fix my ventral hernia I've suffered with since before the sleeve surgery. I elected to have an abdomiplasty (tummy tuck) at the same tame, and am now 6 weeks post op & a size 10; I feel great! Update 9/21/17-size 8 & feeling healthier every day. Hiking, swimming in the ocean, truly living life I never knew before due to weight considerations or obstacles. Truly life-changing
Erika M.
Erika M.
Feb 13, 2017
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I cannot express how grateful I am for Dr. Feiz and his team. From day one they made the process an ease. I decided to change my life and they have helped me every step of the way. I've shed 100lbs and I couldn't be happier. It was like I pressed the reset button on my life. And if I had to I would do it again 1,000 times over. Seriously...if you are contemplating the surgery with Dr. Feiz, I highly recommend them. This is a big decision and you will need a supportive team behind you. Dr. Feiz and his team are just that...truly amazing!!!
Kyle R.
Kyle R.
Oct 23, 2015
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My mom has battled weight loss for as long as I can remember. She heard of Dr. Feiz one day while watching television and contacted his ranch Cucamonga office soon after. Everything fell into place wonderfully and she went in for surgery last week. She is already 20 pounds down and couldn't be happier and has nothing but nice things about him and his staff. I have never seen her this confident and excited!