Office in Mesa
  • Areas of Practice:
  • Bariatric Medicine / Surgery

Dr. Gary Knighton

About Gary Knighton, D.O.

When you come in for your visit, regardless of how you’re feeling, we promise you’ll leave with a smile on your face, feeling better about yourself, and looking great!

As a Weight Loss Physician (Bariatrician) and long standing member of the Obesity Medicine Association (formerly the American Society of Bariatric Physicians), Dr. Knighton believes in using a multi-faceted approach, combining a balance of nutrition, activity, proper vitamin supplementation, and medications to help his patients shed the extra weight.

When you visit Dr. Knighton, you will alway receive personalized care and are never just another number.

Doctor Info

Education & Training

  • Kirksville College of Osteopathic Medicine
  • Residency – Mesa General Hospital

Professional Memberships

  • American Medical Association (1999 – Present)
  • American Osteopathic Association (1995 – Present)
  • Arizona Osteopathic Medical Association (1995 – Present)
  • Obesity Medicine Association (1996 – Present)

Honors & Awards

  • Dr. Knighton has been voted #1 Non-Surgical Weight-Loss Physician 8 consecutive years

Weight Loss 

  • Individualized Program
  • Medications
  • Activated B-12 Injections
  • Lipotropic Injections
  • Eat/Exercise According to Blood Type
  • Ketogenic Diet

Aesthetic Procedures

  • Juvéderm® Ultra XC
  • Juvéderm® Ultra Plus XC
  • Juvéderm® Volbella
  • Juvéderm® Vollure
  • Juvéderm® Voluma
  • Restylane® Contour
  • Restylane® Defyne
  • Restylane® Kysse
  • Restylane® Lyft
  • Restylane® Refyne


Other Services

  • ZO Skin Health®
  • Latisse
  • Chemical Peels
Our Office
Phone: (480) 539-1855
Monday: 8:30 AM - 5:00 PM
Tuesday: 8:30 AM - 5:00 PM
Wednesday: 8:30 AM - 5:00 PM
Thursday: 8:30 AM - 5:00 PM
Friday: 8:00 AM - 5:00 PM
Saturday: Closed
Sunday: Closed

I have been a patient of Dr Knighton’s practice for over 10 years and I would not go anywhere else for weight loss or aesthetic procedures. I trust them to always do what is best for my health and for looking my best naturally. In these past years I have lost over 40 lbs. and maintained my lower weight consistently and safely. I would highly recommend them to anyone seeking help with safe and effective weight loss and wanting to look their best. Dr. Knighton’s P.A. listened to my concerns and is careful to administer products that will enhance softly and gracefully. The office staff is all very nice and efficient keeping appointments running pretty much on time. They stay on top of their charts to ensure patients are keeping up with required blood tests and physicals, and while their prices may be bit higher than some, the peace of mind knowing they are practicing in a safe manner makes it worth the difference.

Lisa M.

Dr. Knighton is awesome! Making an appointment is always simple he is willing to spend whatever time needed to answer your questions, listens to your situation and works with what you are comfortable with, many options for weight loss programs. His staff is just as amazing EVERYONE is friendly and so helpful to get you in and out as quickly as possible. I love not having to make an appointment every week for my B12 injections. They do not bill insurance but pricing is reasonable and they offer package options which make it a bit more affordable. I definitely recommend Dr. Knighton and his awesome staff!

E. Saul

I have had the best experience at Dr. Knighton’s office! Everyone cares about you, they really do. It starts with Dr. Knighton, he takes his time getting to know you and about your issues!! Then Kelly and the other wonderful ladies are also just as caring!! Meanwhile while liking the office and the people so much; I have done very well at losing and maintaining my weight!! I couldn’t have done that without all of their support!! I feel so much better about myself and everyone can tell!!

Anna H.

I’ve been seeing Dr. Knighton and his staff for about 9 months. I’ve lost around 40lbs thus far with about 20lbs to go, which I think is great progress because I was stuck for 6+ years at a weight I was unhappy with. I would spend hours in the Gym, paid for a trainer even, tired only eating salads and several other diets/workout regimens, but nothing was working. Dr. Knighton & his team have helped me turn that around!! I’m not always the best at working out, or eating right- I have my off days and even some off weeks, but I found that if you stick to the plan, eat a bit healthier, and move a little more it works. I found that Dr. Knighton’s plan has helped me control my portions, my hunger & the weight loss has me feeling more confident every day.

I would recommend this facility to anyone who’s willing to make a change!!

Ashley A.

I have been a patient of Dr. Knighton for over 10 years. Dr. Knighton, his P.A. and incredible staff go above and beyond in making you feel comfortable and truly listening to your needs and helping you achieve your weight loss goals. They do outstanding work with Botox, fillers and chemical peels. Pain free and optimal results. The moment you enter you are greeted and made to feel at home. I can honestly say they’ve changed my life for the better and I recommend them to everyone I know! So grateful to have found them.

Kelly K.