
Meet the Doctors
Dr. Eun Sun Hwang

Dr. Eun Sun Hwang knew from a young age that she wanted to become a dentist. After high school, she attended the University of Maryland College Park where she earned her Bachelor of Science degree in Biochemistry. She received her Doctorate of Dental Surgery from the University of Maryland School of Dentistry. During dental school, she was elected to the Omicron Kappa Upsilon (OKU) national dental honor society. It was a huge honor for Dr. Hwang because faculty votes only a handful of students who have distinguished themselves by excellence in scholarship, while demonstrating exemplary traits of character to join OKU. Dr. Hwang continued her training in post-graduate residency in Advanced Education in General Dentistry at the University of Maryland, where she received special training in cosmetic dentistry. When she realized her passion for treating children, Dr. Hwang earned her specialty training in Pediatric Dentistry from the University of Maryland.
Licenses and Professional Affiliations:
- Board Certified, American Board of Pediatric Dentistry
- Licensed by Maryland State Board of Dental Examiners
- Member, American Academy of Pediatric Dentistry
- Member, American Dental Association
- Member, Maryland State Dental Association
- Member, Maryland Academy of Pediatric Dentistry
- Member, Patuxent Dental Society
- Admitting privileges in Medstar St. Mary’s Hospital Center and Medstar Southern Maryland Hospital Center
Additional Certifications:
- Basic Life Support (BLS)
- Pediatric Advanced Life Support (PALS)
Dr. Eun Sun Hwang has been serving children in Southern Maryland since 2012 and she looks forward to serving children in this area for many more years to come.
Dr. Hwang is happily married to her husband Stephen, who works at Patuxent Naval Air Station. Together they have two daughters named Olivia and Sophia. As a parent to two youngsters, she knows the challenges that raising a child can bring. She wants parents to feel comfortable asking her and her staff any questions about their children’s oral health. She loves working with children and wishes to have a positive impact on her patients by providing exceptional care and dental health education. In her free time, Dr. Hwang enjoys biking, traveling, and spending time with her friends and family.
Dr. Rohit Sethi

Dr. Rohit Sethi, DDS, is a board eligible pediatric dentist. He received his Bachelor of Dental Surgery from the College of Dental Sciences in Davangere, India, and his Doctor of Dental Surgery from New York University College of Dentistry in New York. He then went on to complete AEGD residency and two years of Pediatric Dental residency from NYU Langone Hospital. He then worked as a faculty with NYU Langone Hospital pediatric residency program in Maryland and is on the staff at Peninsula Regional Medical Center in Salisbury, Maryland. Before joining the Smile Castle Team, Dr. Sethi has also worked for multiple years, mainly providing dental care for children. Dr. Sethi is fluent in Hindi, Punjabi and Urdu. He is working at our Smile Castle clinic in California, Maryland.
Licenses and Professional Affiliations:
- Board Eligible, American Board of Pediatric Dentistry
- Licensed by Maryland, Virginia, Washington DC State Board of Dental Examiners
- Member, American Academy of Pediatric Dentistry
Additional Certifications:
- Basic Life Support (BLS)
- Pediatric Advanced Life Support (PALS)
Dr. Sethi is happily married and has one son. Dr. Sethi enjoys providing dental care to children and during his spare time, he enjoys outdoor activities with his son and spending time with his family and friends.
Dr. Alexis Brown

Dr. Alexis is a native of eastern North Carolina. After earning her bachelor’s degree from the University of North Carolina-Chapel Hill, and she went on to pursue her childhood dream of becoming a dentist at Meharry Medical College School of Dentistry in Nashville, TN. She then continued her training by completing a one-year Advanced Education in General Dentistry (AEGD) residency program in North Carolina before relocating to Maryland to practice as a general dentist.
Dr. Alexis practiced for 3 years, and then her passion for treating children motivated her to obtained specialized training in Pediatric Dentistry. She completed her pediatric dentistry residency program at East Carolina University School of Dental Medicine in Greenville, NC and is now proudly treating children and educating parents on the importance of oral health and hygiene.
Licenses and Professional Affiliations:
- Board Eligible, American Board of Pediatric Dentistry
- Licensed by Maryland, Virginia, & North Carolina State Board of Dental Examiners
- Member, American Academy of Pediatric Dentistry
- Member, American Dental Association
Additional Certifications:
- Basic Life Support (BLS)
- Pediatric Advanced Life Support (PALS)
When away from the office, Dr. Alexis enjoys spending time with her husband, family and friends. She loves to read and travel, and is a self-proclaimed foodie who also loves cooking and trying new restaurants. She is so excited to join the team, and can’t wait to see your smiling faces!