Our Team


Dr. Ruth Shields

 Dr. Ruth Shields is a medical doctor who has practiced medicine in Alabama since 1980. She practiced as a board-certified obstetrician and gynecologist until 2011. Since that time, she has devoted her efforts to the study of obesity medicine. Dr. Shields is passionate about the promotion of health through weight loss and lifestyle change. She became board-certified as a bariatrician (bariatric specialist) through the American Board of Obesity Medicine in 2012. She is a member of the American Society for Bariatric Physicians, The Obesity Society, and The Obesity Action Coalition. Dr. Shields is married to Bry Shields and has 5 adult children and 3 grandsons, 2 granddaughters. 


Kelly West Keyser, MS, RD, CDE

Kelly West Keyser is a Registered Dietitian Nutritionist and Certified Diabetes Educator.  Kelly has a Bachelors of Science in Nutrition Science from Auburn University and a Masters of Science in Nutrition from University of Alabama at Birmingham.  Kelly loves helping others prevent chronic disease through healthy eating and exercise.  She personally loves to cook and try new recipes, and enjoys running and doing triathlons.


Brandi Roberson, Exercise Physiologist

 Brandi Roberson is our Exercise Physiologist at Healthy Weight 4 Me.  Brandi has a Bachelor of Science in Exercise Physiology from Auburn University.  Brandi has a background in Cardiac and Pulmonary Rehabilitation.  She played college volleyball and has always had a passion for fitness. She believes exercise is essential for overall mental and physical health.

About Us


Roxana Ley Martinez

Roxana Ley Martinez

Roxana Ley Martinez

Administrative Assistant

Roxy is new to Mobile from Miami, FL.  She has 5 years experience in the hospitality industry.  Roxy is fluent in both Spanish and English.  She enjoys painting, cooking, and reading. 


Jennifer Balthaser

Roxana Ley Martinez

Roxana Ley Martinez

 Billing Specialist, CPC

Jennifer graduated from Lake Technical Center with a degree in Business Administration and Fayetteville Technical College with Medical Billing and Coding Certification. She enjoys boating, camping, and Alabama football.


Tammy Caldwell

Roxana Ley Martinez

Tammy Caldwell

 Medical Assistant and CNA

Tammy is a Medical Assistant and licensed CNA.  Tammy has 17 years experience in neurology.  Tammy is passionate about patient care, her family, and animal rescue.