Joel Isom, MD, is a board-certified internal medicine physician serving patients at CommunityMD in Atlanta and Newnan, Georgia. He is passionate about treating and caring for his patients. Dr. Isom’s journey began with a desire to become a veterinarian. However, as he experienced how disease was affecting his family, he found his passion for improving the health and wellness of people.
He graduated from Meharry Medical College in Nashville, Tennessee, and completed his residency and training in the Meharry Internal Medicine Program. Dr. Isom embraces innovation in the practice of internal medicine. He values reaching the health and wellness goals of his patients. He pursues the process of identifying their needs and developing plans for patient wellness. Seeing his patients smile when together they have discovered what treatments have been most effective brings him a sense of satisfaction. Dr. Isom is from Thomson, Georgia, and moved to Atlanta to be closer to his family. He loves spending time with his wife, Dr. Erica Isom, who is also an internist. They enjoy going on vacation with their three children. He also enjoys Fantasy Football and a good laugh with the 90s sitcom Martin.
Solomon Tafari, MD
Internal Medicine Physician
Dr. Solomon Tafari is a highly experienced primary care physician with over 30 years of clinical expertise in internal medicine, hospital medicine, and value-based care. He is board-certified in Internal Medicine and holds a Master of Public Health (MPH), bringing a strong focus on preventive medicine and chronic disease management.
Before joining CommunityMD, Dr. Tafari served in multiple leadership roles, including Chief Medical Officer and Regional Medical Director, where he helped develop programs that improved care quality, reduced hospital readmissions, and enhanced patient outcomes. His deep experience in population health and quality improvement ensures patients receive comprehensive, coordinated care.
Dr. Tafari is passionate about building long-term relationships with his patients, emphasizing preventive care and personalized treatment plans to help each individual live a healthier life.
Special Interests: – Chronic disease management (Diabetes, Hypertension, Heart Disease) – Preventive care & wellness – Population health & care coordination
Languages: English, Amharic
Locations: Tucker & Atlanta
Natasha Williamson, AGNP-C
Nurse Practitioner
Natasha Williamson, AGNP-C, is an experienced, board-certified adult gerontology nurse practitioner at CommunityMD in Atlanta and Newnan, Georgia. She is certified by the American Association of Nurse Practitioners. Ms. Williamson’s most genuine desire is to foster and enhance a balanced and positive healing experience for her patients.
She seeks to acquire a comprehensive evaluation of her patients by taking the time to engage them in all aspects of their health. She lives by the motto that “health is the true wealth.” Ms. Williamson began her clinical career as a registered nurse, completing her undergraduate studies at Florida Hospital College of Health Sciences in Orlando. She earned her master’s in nursing at Walden University in Minneapolis, Minnesota. Over her training, Ms. Williamson gained experience in various specialties, including cardiology, neurology, and long-term acute care. She also served as Hospital Nurse Educator. Ms. Williamson is licensed in Georgia to provide well-rounded health care to patients ranging from young adults to the elderly. Her scope of practice encompasses health promotion, disease prevention, diagnosis, and management of chronic health conditions across the aging span. Natasha lives in Stone Mountain, Georgia, and loves spending time with her husband and daughter.
Collin Adu, DPT, PhD, MBA
Doctor of Physical Therapy & Clinical Director
Dr. Collin Adu is the President and Clinical Director of OneSource Sports Neuro Rehab, serving metro Atlanta locations including Lawrenceville, Snellville, Tucker, and Atlanta.
He holds a Doctor of Physical Therapy, a PhD in Physical Medicine & Rehabilitation, and an MBA, all from Emory University in Atlanta As one of fewer than 1% of fellowship-trained orthopedic manual therapists, Dr. Adu is credentialed as a Geriatric Certified Specialist (GCS), Spinal Manipulation Therapist (CERT‑SMT), and Osteopractor, and is also certified in vestibular rehabilitation and dry needling. With over 17 years of specialized orthopedic experience, he offers cutting-edge, evidence-based rehabilitation using both manual techniques and robotic technology such as rebless.
Dr. Adu is known for his empathetic patient approach—he takes time to explain conditions clearly and develop personalized treatment plans. Patients frequently praise his genuine care, clinical excellence, and positive impact on recovery journeys.
When he’s not managing or treating at the clinic, Dr. Adu supports community wellness initiatives and enjoys travel, reading, and time with his family.
Special Interests: – Orthopedic & geriatric rehabilitation – Manual & osteopathic therapy – Balance, vestibular therapy & dry needling – Technology-integrated motion therapy (e.g. rebless™) Languages: English Locations Served: Tucker, Newnan, South Atlanta
Dr. Tracy Mayberry, DPM
Podiatric Physician – Atlanta & Tucker Locations
Dr. Tracy Mayberry is an experienced podiatric physician specializing in comprehensive foot and ankle care. She is passionate about improving mobility, preventing complications, and enhancing quality of life for her patients. Dr. Mayberry brings extensive expertise in treating conditions such as diabetic foot complications, wound care, heel pain, bunions, and other lower extremity disorders.
With a strong commitment to preventive care, Dr. Mayberry partners with patients to create personalized treatment plans that support long-term health and independence. Her approach focuses on early intervention to prevent severe complications and promote overall wellness.
Special Interests: – Diabetic foot and wound care – Heel pain, bunions, and hammertoes – Preventive podiatric care and education – Nail disorders and ingrown toenail treatment