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Meet Our Team


The board-certified providers and caring staff at Alliance Weight Loss Center are here for you during your weight loss journey. As an internal medicine practice in Covington, Georgia, and Norcross, Georgia, our weight loss programs are supervised by our providers at all times. Learn more about our healthcare team below.

Muhammad Abbasi, MD

Muhammad Abbasi, MD, is a board-certified internal medicine physician treating men and women patients over age 16 at Alliance MD Weight Loss Center in Covington, Georgia and Norcross, Georgia. With over 20 years of medical experience, Dr. Abbasi specializes in physician medically supervised weight loss programs that help adult patients lose weight and maintain their goal weight. Dr. Abbasi earned his Bachelor of Medicine and Bachelor of Surgery degrees at Dow Medical College in Karachi, Pakistan. He then moved to the United States to complete his medical residency at Mount Sinai School of Medicine/Queens Hospital Center in New York City. Dr. Abbasi practiced internal medicine in Atlanta and Conyers, Georgia, before opening Alliance Family Care and Alliance MD Weight Loss Center in Covington, Georgia. Dr. Abbasi is an award-winning doctor, receiving the "Top Physicians of America" award, "Patient's Choice" award in 2009, and the "Best of Covington" award. He is board-certified by the American Board of Internal Medicine.

Lisa Jones, NP

Lisa is a family nurse practitioner, board-certified by the American Association of Nurse Practitioners and currently licensed to practice in the states of Georgia. Lisa began her career in nursing in 1995 and has been a family nurse practitioner since 2017. Her previous experience includes work in Woman's health and urgent clinics as well as the emergency room. Lisa is qualified to diagnose and treat a wide array of conditions across the entire lifespan. She is accepting new patients.

Lisa grew up in Upstate New York. She is married, with five children and three grandchildren. She is an avid fan of college football, "GO," Dawgs! She loves to travel and spending time with her family.

Christina Hamilton

Christina Marie Hamilton is a Family Nurse Practitioner at Alliance Family Care who partners closely with Dr.Muhammad Abassi. She originally attended SalemInternational University, in Salem, West Virginia, where she received her Associate's Degree in Nursing, graduating with honors. Christina then pursued her Bachelor of Science in Nursing from Salem International University while working Full-Time as a Registered Nurse in a Telemetry Unit. After working three years on the Telemetry Unit, she then transferred to the Intensive Care Unit. While working Full-Time, she then pursued her Master of Science in Nursing with a subspecialty in Family Nurse Practitioner from South University in Savannah, Ga. Christina moved to Atlanta, Georgia to increase the diversity of patients she cared for. She is a Board Certified Family Nurse Practitioner and licensed in Georgia. She is welcoming new patients.


Alliance MD Weight Loss Center
1775 Access Road, Suite C
Covington, GA 30014
Phone: 770-285-7039

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