About Us

At Proven Weight Loss, our goal is to educate, motivate, and provide physician-supervised support to help every client achieve their ideal and desired weight. Our passion and satisfaction are driven by the amazing impact we have on our clients' health, happiness and improved self-esteem.

Why is Proven Weight Loss different?

Board Certified Physicians. All of our physicians are board-certified and have additional training in bariatric medicine. Each client's medical background is carefully assessed so that a customized treatment program can be designed for fast, safe and sensible weight loss.

Trained and Motivated Staff. Our custom-designed programs are supported by our friendly, fun and caring staff. They are devoted to ensuring you meet your weight loss goals while gaining the tools and knowledge to keep you at your healthiest and happiest weight. Through exercise and nutritional counseling, as well as motivating and celebrating your achievements, our staff will strive to make the weight loss journey a successful and exceptional experience.

Convenient Evening and Weekend Hours

Bio-Identical Hormone Therapy. It's scientific fact that as we age, certain hormone changes affect our metabolism and ability to lose body fat. We offer the opportunity of including bio-identical hormone therapy for those wishing to take their weight loss to the next level, or to simply restore more youth and vigor to their lives. More information on Infinite Vitality.

Our Weight Loss Specialists:

David Wolstein, M.D., Medical Director

"Client safety and satisfaction are my two top priorities," says Dr. Wolstein. "As Medical Director at Rejuvenesce, I am fastidious about making sure our Med Spa has standards of quality second to none." Dr. Wolstein graduated from Chicago Medical School. He completed a residence in Pediatrics and Radiology and Nuclear Medicine. He practiced Radiology for 34 years in the Tampa Bay area.

Eddie A. Ariss, M.D., Weight Loss Physician

"I am truly excited to be involved in the prevention of illness, as well as the improvement of clients' self-image by helping people lose weight and become healthier," says Dr. Ariss. A graduate of the med school at Michigan State University, Dr. Ariss has spent the last 8 years practicing emergency medicine in the Tampa Bay area. He is passionate and competent when caring for the acutely ill, as well as for those devastated by the long term effects of obesity. "Now, instead of treating obesity-caused diseases, I have the opportunity to help prevent them. I'm enjoying helping people change their lives," he says.

Katie Kaffai, Spa Director

"I hope to make a difference in how people experience beauty and health," Katie says. Her commitment to healthy lifestyles attracted her to offer this weight loss program at the Med Spa. She is determined to help people live longer, healthier lives by achieving and maintaining their ideal weight. As a former working model, Katie also knows the other wonderful benefits of not being overweight: more energy, more self-esteem, and much more fun clothes shopping.

Gail Lohman, Certified Medical Assistant

Gail is a woman who practices what she preaches. Gail's medical experience is only one reason she is the Medical Assistant for our Proven Weight Loss program. What makes her especially qualified for this position is the commitment to health and nutrition that she exemplifies in her personal life. Gail's been an active triathlete for nearly 10 years and has competed in the Ironman World Championships. She is a certified USA triathlon and cycling coach who trains others to reach their fitness goals. She races regularly as an active member of the St. Pete Mad Dogs triathlon club. When she talks to our weight loss clients about the value and how-tos of exercise, people listen. Along with dispensing expert advice, Gail is warm, personable and supportive of clients on the weight loss journey.

Affiliated Registered Dietitians:

Rejuvenesce Med Spa is affiliated with the following area dietitians who are available for consult to those weight loss clients who could benefit from additional nutrition counseling.

Barbara Correll, MS, RD, LD/N

Barbara is a private practitioner with more than 30 years experience working with nutritional issues. Her clients include those with eating disorders, diabetes, weight issues, Crohn's disease and nearly every other condition affected by nutritional habits. Her wealth of experience enables her to accurately identify each client's unique nutrition needs. Barbara is a registered and licensed dietitian, and is a member of many professional associations. She has appeared on television and radio and is the author of many nutrition articles. Barbara has had her own practice, Dietetic Consulting Services in Safety Harbor, FL since 1988. Barbara may be contacted by email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Sheila Dean, MS, RD, LD/N

Registered dietitian, author, consultant to sports stars ... Sheila boasts a well-rounded background in the nutrition field. She is a certified diabetes educator as well as an exercise physiologist, and has consulted as sports nutritionist with the Tampa Bay Bucs and The Phillies, among other sports teams. She's the author of Nutrition & Endurance: Where Do I Begin? as well as a contributing writer to the St.  Petersburg Times, Ms. Fitness magazine and Ironmanlive website. Because of her extensive knowledge and confident approach to nutrition counseling, Sheila is often a featured guest on local TV programs. She has a medical nutrition private practice in Palm Harbor, FL which may be accessed through http://www.IntegrativeNutritionSolutions.com.

Sarah Krieger, MPH, RD, LD/N

Sarah has an extensive background in nutritional risk screening and she is particularly focused on children and nutrition. At All Children's Hospital, she has developed weight management programs targeted to pre-teens and teens, and has provided nutritional counseling to children under 5 and their families. She believes that teaching "food smarts" to children is the best way to prevent obesity in adulthood. As part of this effort, she runs a personal chef service in the St. Petersburg area, preparing personalized, nutritional meals for families that are based on weight management and are health-oriented. More information about Sarah is available through her website http://www.diningcents.com.