1695 E Rainforest Road | Fayetteville, AR 72703 |Ph 479.445.6460

About Us

Joshua E. Roller, MD

Joshua E. Roller, MD

Bariatric & Aesthetic Specialist - Fayetteville

Dr. Roller moved to Northwest Arkansas in August 2007 after completing a Minimally Invasive Surgical Fellowship in Bariatric and Advanced Laparoscopic General Surgery at Duke University Medical Center, one of the premier bariatric surgery centers in the country. Dr. Roller has performed more than 6,000 bariatric procedures (weight loss surgeries), including the laparoscopic Roux-en-Y gastric bypass, lap gastric banding, the laparoscopic sleeve gastrectomy, and the Laparoscopic Duodenal Switch with outstanding weight loss results. Dr. Roller was the 1st fellowship-trained bariatric surgeon and advanced laparoscopic surgeon in the State of Arkansas. Dr. Roller performs state-of-the-art minimally invasive surgical procedures, using the same techniques and methods to perform his procedures that you will find at major medical centers across the country. Dr. Roller is a national instructor and surgeons from across the country travel to NWA to observe Dr. Roller and his techniques.

As one of the nation’s leading Bariatric Surgeons, Dr. Roller has performed over 6,000 weight loss surgeries and has helped thousands of patients lose hundreds of thousands of pounds. One of the biggest concerns Bariatric surgery patients have is “loose skin”. Although loose skin is not life-threatening like Obesity, it can impact how our patients see themselves and their self-image. During his time as an advanced minimally invasive surgeon, many of his patients have undergone skin removal surgeries by plastic and cosmetic surgeons. Patients describe these procedures as very painful leaving large, unsightly scars and are much more difficult to recover from, especially compared to their Weight loss surgery. In addition, the costs for these “surgeries” were so high that many patients couldn’t afford to do them especially when the recovery from these “skin removal” procedures ranges from weeks to months.

Dr. Roller began to do research on minimally invasive techniques for loose, saggy and wrinkly skin after weight loss, having babies, or aging but desired to find technology that would provide his patients with minimally invasive options, not maximally invasive surgeries. After extensive research, Dr. Roller discovered Inmode, the makers of Bodytite/facetite. This market-leading body-contouring technology can be used on many areas of the body and can help improve skin laxity after weight loss or due to aging and is also great for removing those last stubborn areas of fat that just can’t be lost no matter how much weit one loses. Dr. Roller has since partnered with Inmode and completed his training in Bodytite/Facetite in Philadelphia. He furthered his training by working closely some of the Nation’s leading experts in Plastic Surgery and the Bodytite/Facetite procedures. Since starting these procedures for the patients in NWA, he has had some tremendous success in treating loose, saggy skin and stubborn areas of fat after weight loss and aging. Dr. Roller was the 1st in NWA to offer this amazing technology.

In addition to the minimally invasive skin tightening procedures that Dr. Roller offers, both he and Dr. Kristin Roller also have acquired and learned many non-invasive techniques for treating loose, saggy and wrinkly skin as well as treating the effects of aging on skin. As opposed to some Plastic/Cosmetic surgeons who generally want to operates, the team at Radiance is focused on helping patients achieve their goals thru the least invasive techniques possible. The Drs. Roller have seen more loose skin than anyone in NWA over the past 11 years after helping patients lose so much weight. Now they are not only able to offer their patients the latest in minimally-invasive and non-invasive skin tightening and rejuvenation techniques, but everyone in NWA.

Dr. Josh Roller is board-certified in general surgery and is a member of the American Society for Metabolic and Bariatric Surgery as well as the American College of Surgeons. In addition, Dr. Roller is a member of the American Society of Liposuction Surgery and the American Academy of Cosmetic Surgery. Dr. Roller received his medical degree from the University of Oklahoma College of Medicine as a member of Alpha Omega Alpha (AOA), representing the top 10 percent of his class. He completed his internship and general surgery residency at the University of Texas Southwestern Medical Center at Dallas, one of the busiest and most respected surgical training programs in the country. As a chief resident, he was given the national honor of Outstanding Laparoendoscopic Resident of the Year. He then completed a one-year fellowship in bariatric surgery at Duke University Medical Center. Dr. Roller has done extensive research in bariatric and laparoscopic surgery and has published several research papers in major journals. Dr. Roller has also presented and taught at many of the National Conferences on Bariatric Surgery.



Kristin R. Roller, MD

Kristin R. Roller, MD

Bariatric & Aesthetic Specialist - Fayetteville

Kristin R. Roller, MD, board certified in Bariatric Medicine and Family Medicine, one of few physicians in the region with these Credentials. Since starting in 2007, Dr. Roller has served as the bariatric medical specialist at Roller Weight Loss & Advanced Surgery. She has extensive knowledge and expertise in bariatric medicine and weight loss surgery. Working side-by-side with her husband, Dr. Josh Roller, she has helped thousands of patient fight obesity and lose hundreds of thousands of pounds of weight.

Historically, some of the most common questions asked of her before weight loss surgery have been “What about loose skin after surgery” and “how do I keep from looking older?” Dr. Roller has always had particular interest in skin health and treating the whole patient. As part of her mission to help her patients complete their whole journey after beating obesity, she decided to become involved in skin health for her patients. As a physician with particular knowledge in skin health, Dr. Roller expanded her knowledge by completing advanced training in injectables (Botox) and Fillers with Allergan, one of the nation’s leaders in these products. She also has completed advanced training in skin health with the experts at ZO skin Health, one of the nation’s leaders in skin care products. With this advanced training and knowledge, Dr. Roller is effectively able to help patients fight the effects of weight loss and aging, helping them achieve all of their health care goals. The effects of aging and weight are not unique and impact everyone.

As a female, Dr. Roller has a particular interest in skin care and body contouring. After having 3 children of her own, she is uniquely aware of the changes that occur after having children and aging. Unwanted weight gain, especially in those hard to lose places, loose skin and wrinkles can have a tremendous impact on one’s self-image and confidence. Knowing these are major issues facing men and women, Dr. Roller completed advanced training with Inmode, one of the market leaders in skin rejuvenation and body contouring technology. At Radiance, Dr. Roller is able to offer the most advanced non-invasive technology available for skin-tightening, loose and wrinkled skin, and fat removal in stubborn areas as well as help her patients try to prevent or minimize these issues before they develop.

Dr. Kristin Roller graduated medical school from the University of Texas Southwestern Medical School at Dallas. She also completed her internship and residency in Family Medicine at UT Southwestern Medical Center at Dallas. In addition, Dr. Roller is also board certified in Obesity Medicine through the American Board of Obesity Medicine and is a member of the American Academy of Family Physicians.

Natalie Keen

Natalie Keen

Aesthetitian and Laser Technician - Fayetteville

Natalie Keen is a Fayetteville, Arkansas native. She has trained in Austin and Dallas, TX.  After receiving her laser certification and aesthetic training, Natalie returned to Northwest Arkansas. Since being with Radiance, she has continued her training in the latest skin care technologies, ZO® Skin Health and SkinMedica®. Natalie is now helping clients embark on a personalized, healthy skin care journey.

  • National Laser Institute, Laser Certification, Dallas, TX
  • The Avenue Five Institute in Austin, TX for aesthetic training
  • Certified in micro-needling
  • Trained in the latest skin care technologies (ZO® Skin Health, SkinMedica®)
Sara McDonald, MSN, APRN, FNP-C

Sara McDonald, MSN, APRN, FNP-C

Bariatric & Aesthetic Specialist - Tulsa

Sara is a board-certified family practice nurse practitioner who joined the Roller team in 2016. Sara sees bariatric and aesthetic patients at the Tulsa, Oklahoma office.  She earned her bachelor’s degree from Northeastern State University in Tahlequah, Oklahoma and her master’s degree from Samford University in Birmingham, Alabama.  Sara’s nursing background includes experience in family practice, intensive care, medical-surgical nursing, bariatric medicine, cardiology and nursing education.  Sara has completed advanced training in aesthetic injectable administration of BOTOX® Cosmetic, KYBELLA®, and the JUVEDERM® family of dermal fillers with ALLERGAN®.

  • Associate’s of Applied Science in Nursing, Tulsa Community College, Tulsa, OK
  • Bachelor’s of Science in Nursing, Northeastern State University, Tahlequah, OK
  • Master’s of Science in Nursing, Family Nurse Practitioner, Samford University, Birmingham, AL
  • Certified Family Nurse Practitioner through American Academy of Nurse Practitioners
  • Certified BLS Registered Instructor certifications through American Heart Association