USA Department of Family Medicine Faculty
Academic Faculty
R. Allen Perkins, M.D.
Professor, Department Chair
Dr. Perkins was our Program Director from summer 1999 to summer of 2010 and he has served as the department chair since 2005. His clinical practice incorporates the full spectrum of Family Medicine. He teaches several of the procedural components within our Family Medicine Department including obstetrical ultrasound. His academic interests are focused on improving care delivery to underserved populations and care of patients with chronic diseases.
Dr. Perkins enjoys scuba diving, running, and spending time at the beach with his family.
Ehab Molokhia, M.D.
Vice Chair and Program Director
Dr. Molokhia joined our faculty after completing his residency with USA Family Medicine. Dr. Molokhia’s hometown is Ann Arbor, MI. He did all of his undergraduate work, as well as earned his medical degree, from the University of Alexandria in Alexandria, Egypt. He is Vice Chair of the Department of Family Medicine, and is also the Residency Director. Dr. Molokhia and his wife, Doaa, are the proud parents of three children- a son and two daughters.
Marirose Trimmier, M.D.
Associate Professor
Marirose C. Trimmier, MD is a graduate of the University of South Alabama Medical School and Residency Program. After completely residency in 2001, she moved to Georgia for 3 years before moving back to her home state of Alabama. After several years in private practice she has recently returned to the University of South Alabama as Assistant Professor. She was promoted to Associate Professor in 2021.
Dr. Trimmier enjoys reading, dancing and cycling.
Rebecca Sollie, M.D.
Assistant Professor
Dr. Sollie is a 2015 graduate of the University of Alabama, School of Medicine, Birmingham, AL and completed her residency in 2018 at the University of South Alabama Residency Program. Dr. Sollie joined our faculty as an assistant professor following the completion of her residency. She is a member of the American Medical Association, American Academy of Family Physicians and Society of Teachers of Family Medicine. She has a strong interest in family, maternal, and child care beginning before conception.
Ann Payne-Johnson, M.D.
Assistant Professor
Dr. Payne-Johnson received a Bachelor of Science degree in psychology and a Master of Science in marriage and family therapy from the University of Southern Mississippi. She graduated from Spartan Health Sciences University School of Medicine in Vieux Fort, St. Lucia, in 2000. Dr. Payne-Johnson holds dual board certifications in family medicine and obesity medicine.
Dr. Payne-Johnson has a long history in fitness, nutrition and exercise. She enjoys seeing patients from infancy, adolescence and throughout adulthood. She has interests in wellness care, preventative medicine, women's health, and weight management.
Dr. Payne-Johnson, a New Orleans native, is a die-hard Saints fan. She loves all types of gadgets and is an early adopter of most forms of technology. She enjoys traveling, working out, beach time and reading.
Jenna Pfleeger, M.D.
Assistant Professor
Dr. Pfleeger earned her medical degree at University of South Alabama College of Medicine.
She completed residency at University of South Alabama Family Medicine where she also
served as chief resident during her final year at which time she also completed a
fellowship in Faculty Development at the University of Alabama at Birmingham.
Upon completion of her residency, Dr. Pfleeger joined our faculty as an assistant
professor and has a strong interest in undergraduate medical education and serves
as the assistant clerkship director to our medical students.
Dr. Pfleeger is dedicated to serving all members of the community and is listed under Rainbow Mobile as an affirming provider. She is also a member of the American Medical Association, American Academy of Family Physicians, and the Society of Teachers of Family Medicine.
Dr. Pfleeger enjoys fishing, hiking, and sailing with her son and fiancé.
Peter Rippey, M.D.
Assistant Professor/Sports Medicine Fellowship Director
Dr. Rippey is originally from Missouri and began his medical career as an occupational
therapist before returning to obtain a medical degree from the University of Missouri.
He completed his family medicine residency and sports medicine fellowship training
at Halifax Health in Daytona Beach, Fla. He has experience practicing in multiple
settings including private practice, hospital-based practice and emergency medicine.
He served as team physician for collegiate and high school athletics, as well as covering
community sporting events.
He has passion for treating the athlete as a whole instead of focusing only on the
immediate injury. Rippey teaches that injuries do not only involve the athlete’s muscle
or joints. It can affect their mental health, be caused by training errors and even
result from problems with nutrition. These issues need to be considered and addressed
when caring for athletes and achieving the ultimate goal - injury prevention.
Dr. Rippey is married with two children. He enjoys running, weight lifting, paddle
boarding and hiking. His oldest daughter participates in equestrian activities, and
he and his younger daughter practices the family tradition of beekeeping.
Sarah McMullin, M.D.
Assistant Professor/Family Medicine/Pediatrics/Sport Medicine Assistant Fellowship Director
Dr. McMullin grew up in New Brunswick, Canada, but has since lived and trained around the world. She graduated from St. George’s University School of Medicine (in Newcastle, United Kingdom and Grenada, West Indies), completed her pediatric residency at the University at Buffalo and completed a sports medicine fellowship at NYU Grossman School of Medicine. During fellowship, she had the opportunity to train at the Harkness Center for Dance Injuries, treating recreational and professional dancers from world-renowned companies in New York City and beyond.
Dr. McMullin enjoys treating patients of all ages and encouraging physical activity as a pathway to lifelong health. She prefers to take a multifaceted, personal approach to her treatment plans, considering the entire body and mind. She has a special interest in working with young female athletes and dancers as she grew up dancing, figure skating and participating in track and field in Canada.
In her spare time, Dr. McMullin enjoys dancing, running, rock climbing, art and traveling. Her husband is also a physician at USA Health, and together they enjoy spending time with their golden doodle, Murphy.
Sean Smithgall, Pharm.D.
Adjunct Assistant Professor of Pharmacy
Dr. Smithgall graduated from East Tennessee State University, Bill Gatton College of Pharmacy in 2014 with his PharmD degree. He completed a PGY1 in Pharmacotherapy at Geisinger Medical Center in Danville, PA. He then return to ETSU in order to complete a PGY2 in Ambulatory Care with a focus in transitions of care. After the completion of his PGY2, he accepted a position with Auburn University, Harrison School of Pharmacy as an Assistant Clinical Professor. His practice site is a hybrid inpatient, outpatient model with the University of South Alabama Family Medicine Department where he primarily focuses on improving transitions of care.
Other interests of Dr. Smithgall include research into personality traits and characteristics of success of learners in different healthcare professions.
Casey L. Daniel, Ph.D., M.P.H.
Associate Professor and Division of Cancer Control and Prevention at the USA Health
Mitchell Cancer Institute
Dr. Casey Daniel works on strategies to prevent and control cancer. She is a graduate of Birmingham-Southern College, with a master's degree in public health and a Ph.D. from the University of Alabama at Birmingham. Dr. Daniel completed a postdoctoral research fellowship at the Harvard School of Public Health and at the Dana-Farber Cancer Institute. Her research focuses on cancer prevention, early detection and survivorship with emphases on pediatric, colorectal and skin cancers.