Deidra Rondeno, DDS, graduated from Meharry Medical College School of Dentistry in 1996.  She completed a General Practice Residency at Illinois Masonic Medical Center in 1997, one of the few programs in the U.S. that offers specific training in the treatment of patients having developmental disabilities.  Dr. Rondeno is a member of the American Dental Association, The Academy of General Dentistry, the Georgia Dental Association, the Hinman Dental Society, the Northern District Dental Society, American Academy of Developmental Medicine & Dentistry, the International College of Dentists, and the Georgia Dental Society.  Dr. Rondeno has been CEO since 1999.

Janelle Cooper, DDS, graduated from the University of Michigan School of Dentistry in 2015. She completed a General Practice Residency at Advocate Illinois Masonic Medical Center in 2016, where she received IV conscious sedation training as well as specific training in the treatment of patients with developmental disabilities.  She’s also received a Master of Public Health from Harvard T.H. Chan School of Public Health and completed specialized training in Dental Public Health at the Centers for Disease Control and Prevention.   Dr. Cooper is a member of the American Dental Association, the Georgia Dental Association, and the American Association of Public Health Dentistry. 

Karen Tartt-Callier, DDS, graduated from Meharry Medical College School of Dentistry in 1996.  Dr. Callier is a member of the American Dental Association, Georgia Dental Association, Hinman Dental Society, and Northern District Dental Society.  Dr. Callier is trained to provide IV conscious sedation, and has many years of experience treating patients with developmental disabilities.  She joined the DDD Foundation team in 2017.

Dr. Diamond Enyinnia earned a Bachelor of Arts and Sciences in Biology from Prairie View A&M University in 2018, and a Doctor of Dental Surgery (DDS) degree, graduating from Howard University in 2023. After dental school, Dr. Enyinnia completed a one-year Advanced Education in General Dentistry, (AEGD) program through one of NYU Langone’s training sites at Good Samaritan Health Center in Atlanta. She received IV conscious sedation training through DOCS Education.   Dr. Enyinnia is a member of American Dental Association, Georgia Dental Association, and Northern District Dental Society.

Khadija Abdelmalek is a Expanded Duty Dental Assistant.  She grew up in Morocco.  She attended Metropolitan Institute of Health in Virginia, where she graduated in 2012.  Khadija has been with the DDD Foundation since 2018.

Darnell Hurt is an Expanded Duty Dental Assistant.  Darnell is from Grand Rapids, Michigan.  He attended Fortis College and graduated in 2014.  Darnell is married and has two daughters.  He has been with the DDD Foundation since 2013.

Shawnda Hayes is an Expanded Duty Dental Assistant and is our Clinical Supervisor.  Shawnda is a native of Buffalo, NY.  She attended the Educational Opportunity Center at the University of Buffalo, where she graduated in 2008.  She has been with the DDD Foundation since 2014.  In 2024 she passed the Dental Assisting National Board (DANB) examination, to become a Certified Dental Assistant.

Tiffany White is our Director of Operations. She received her Master's degree in Healthcare Administration from Clayton State University. She is a member of DOMA (Dental Office Manager’s Association). Tiffany is a native of Newnan, Georgia, and has been with the DDD Foundation since 2009.

Cassandra Dallas is our Sedation Supervisor, LPN. She graduated from Central Georgia Technical College in 1996.  A native of Macon, Cassandra has lived in Atlanta since 1998 and has been with the DDD Foundation since 2014.

Lilian Cedano is our Front Desk Coordinator. She received her training as a medical administrative assistant from Everest Institute. Lilian is originally from the Dominican Republic.  She has been with the DDD Foundation since 2012.

Sheri Anderson is our Director of Development. She is originally from Brandon, Mississippi, but received her journalism degree from California State University.  Sheri has worked in nonprofit management for nearly 35 years.   She joined the DDD Foundation team in 2012.                                                                                                                          

Valeria Alcala is our Billing Coordinator.  She graduated from Georgia State University with a Bachelor of Arts in Speech Communication in 2023.  Valeria is from Norcross, GA.  She is Mexican and a native Spanish-speaker.  She has been with the DDD Foundation since 2024.

Mary Boyle is our part-time Bookkeeper.   She has a Bachelor of Science in Accounting from Northern Arizona University (her home state) and a Master’s in Psychology from Georgia Tech.  Mary moved from California to Atlanta in 1993, and has been with the DDD Foundation since 2017.