
Dr. Michael Hsu, DDS, MS, FACP
Dr. Michael Hsu is a board-certified prosthodontist, a dentist specializing in the treatment of complex dental and facial problems, including the restoration and replacement of missing or damaged teeth. A Maryland native, he graduated from the University of Maryland College Park with a B.S. in Chemistry and a minor in Classical Mythology. He then received a Doctorate of Dental Surgery from the University of Maryland School of Dentistry (UMSOD), completing an additional Periodontics Clerkship in his final year where he performed minor gingival surgeries. He continued training at UMSOD with a three year residency in Advanced Specialty Education Prosthodontics, whereupon he completed the American Board of Prosthodontics certification process.
Dr. Hsu is a published author. He is the recipient of a American College of Prosthodontists Education Foundation Research Fellowship for the study of “Dynamic Virtual Articulation: Precision and Trueness” which examined the accuracy and reliability of computerized dental occlusion. He intends to utilize digital tools as a clinician to usher in a new era of prosthodontics and dentistry.
Throughout his education and career, Dr. Hsu has been nominated for, and received, many honors, certificates, and recognitions for his outstanding work and commitment to excellence. He is a member of the American Dental Association, Maryland State Dental Association, and American College of Prosthodontists.
Dr. Hsu married his wife Grace in Taipei, Taiwan. Together they enjoy volleyball, camping, and board games. They are active members of their church in Elkridge, MD.
Dr. Hsu strongly believes that patients should be treated the way he would want to be treated. Accordingly, he holds himself and all the staff at Columbia Smiles to the highest standards of dental care for our patients.
Dr. Michael Hsu, DDS, MS, FACP
Office Staff

Lillian Smith
Office Manager
As the daughter of a diplomate and a Guatemalan mother, Lilly grew up living throughout South and Central America, as well as the Caribbean. She enjoyed spending the majority of her high school years in Guatemala among her cousins and extended family. As an adult, Lilly lived in Japan and different parts of the United States with her husband during his 21 years in the Marine Corps.
With over 30 years of dental experience as an Office Manager, Lilly enjoys the challenges of managing the business side of the dental practice and engaging with every patient walking through the door. Over the years, many of the patients have become dear friends to her. Anyone who knows Lilly, knows that she is eager to help.
Living in Columbia with her husband and two golden retrievers, Murphy and April, Lilly is very active within her community. She enjoys volunteering with her church and her passion for dogs has opened the doors for becoming involved with a golden retriever rescue group. Years ago, while in Japan, her enthusiasm for dog rescue was fueled by her job with military kennels. Lilly’s hobbies include long walks, baking, scrabble and watching Netflix in Spanish.
Lillian Smith
Office Manager

Mary Hayden
Scheduling Coordinator
Mary Hayden’s life journey is a testament to her unwavering dedication to making a positive impact on the lives of others. Born and raised in Maryland, she has always been driven by a deep sense of purpose and a desire to help those around her.
Mary’s educational journey began at Mount St. Mary’s University, where she earned her bachelor’s degree in Elementary Education. But, as often in life, she traveled down an unexpected path which led her to dentistry. It was here where she could still provide essential services and care directly to individuals.
With a heart full of compassion and a desire to learn, Mary immersed herself in dentistry. Over the course of five years, she honed her skills and expertise, working in both larger dental practices with multiple associates and smaller, more intimate settings. Her versatility allowed her to excel in various aspects of dentistry, from handling insurance matters to leading team-building initiatives and facilitating crucial meetings.
One of the aspects Mary finds most challenging about her work is the ever-changing array of personalities she encounters each day. Her ability to adapt and her strong communication skills have served her well in navigating these diverse interactions.
While her professional life has taken her to different corners of Maryland, including Western Maryland and Anne Arundel and Baltimore Counties, Mary’s personal interests are equally diverse. She’s an avid traveler who revels in exploring new places, with a preference for the tranquility of the mountains over the bustling beach. Museums, concerts, thrift store adventures, and yoga sessions all find a place in her heart.
Mary’s friends describe her as funny, loyal, and principled, qualities that undoubtedly shine through in both her personal and professional life. She’s a good listener, a skill she values just as much as the ability to express herself, making her a trusted confidante to many.
And like many of us, Mary has her guilty pleasure: reality TV, particularly the offerings on Bravo. It’s a lighthearted escape from the demands of her busy life, and a reminder that even the most dedicated professionals have their indulgent moments.
If Mary hadn’t pursued a career in dentistry, she would have undoubtedly continued on her path as an educator, shaping young minds and instilling the same principles of compassion and care that define her character.
Mary Hayden
Scheduling Coordinator
Clinical Staff

Jennifer Celenza
Dental Hygienist
Having been a dental hygienist for 20 years, Jennifer is considered conscientious, honest, and supportive by friends, family and patients. Jennifer makes it a point to personally know all her patients. Therefore, she’ll immerse you in conversation as she thoroughly cleans your teeth. You’ll find that time in the dental chair will pass very quickly. Patients find Jennifer to be easy-going and relatable.
For all her life, Jennifer has lived in Maryland, calling Howard County home for the last 23 years. Being a mother of three, she and her children enjoy snacking on cookies, preferably Italian. She appreciates being outdoors, walking, hiking, picnicking. A perfect day would include the mountains, floating on a lake, and taking in the beautiful weather.
Jennifer Celenza
Dental Hygienist

Derrick Black
Dental Hygienist
Having lived up and down the east coast from Jacksonville, FL to Silver Spring, MD, and states in between, Derrick holds true to his Atlanta connection as he still cheers for the Falcons. Derrick’s interest in dentistry started early. He was fascinated that when he lost his baby teeth, they were always replaced with new adult ones. Now as a Hygienist, Derrick makes it a point to engage his patients in conversation, as he enjoys learning more about them. During hygiene visits he shares his dental knowledge, educating his patients on proper oral hygiene and the importance of regular flossing and brushing.
During his off-hours, Derrick spends time with his baby girl, enjoying all of her life’s firsts. He enjoys reading, exercising (martial arts), cooking and exploring different restaurants. His friends describe him as comforting and informative. They also know that a packet of Reese’s Peanut Butter Cups will bring a smile to his face.
Derrick Black
Dental Hygienist

Maryam Zafar
Dental Assistant
Maryam Zafar a dedicated and compassionate dental assistant, has spent the past nine years of her life caring for the oral health of patients in Karachi, Pakistan. Her journey into the field of dentistry began in Pakistan, where she received her early education. However, it was her graduation from Baqai Medical University Karachi in 2014 that marked the official start of her professional dentistry career. Driven by a desire to help others and a fascination with human biology, particularly teeth, she embarked on this fulfilling path.
Maryam’s commitment to her profession is evident not only in her educational background but also in her certifications. In July 2023, she became Radiology Certified by the Maryland State Board, further enhancing her expertise in the field.
One of the most challenging moments in her career occurred during the COVID-19 pandemic. Despite the adversity, Maryam persevered, ensuring the safety of herself and her patients with proper preventive measures and personal protective equipment. Her dedication and enthusiasm remained unwavering.
Although Karachi, Pakistan, has been her primary place of residence, Maryam is known for her ability to bring smiles to the faces of her patients. Her joy stems from restoring oral aesthetics and confidence to those she cares for. Beyond her professional life, Maryam is admired for her personal qualities. She is known for her respect, politeness, and empathy, qualities that her friends would undoubtedly use to describe her.
Outside the world of dentistry, Maryam finds the greatest joy in spending time with her young daughter and her husband. They often escape to peaceful, mountainous areas with tranquil lakes for a rejuvenating weekend getaway.
Maryam is not only proficient in the science of dentistry but also fluent in English, Urdu, and Hindi. Her versatility extends beyond her career as well. Her perfect day is the one she lives every day, cherishing both her personal and professional life.
As for guilty pleasures, Maryam confesses to having a weakness for pizza. However, her true passion lies in caring for the oral needs of her patients, exemplifying the words she lives by: “No act of kindness, no matter how small, is ever wasted.”
Had she not pursued dentistry, Maryam might have become a commercial pilot. She is inspired by individuals who embody qualities such as politeness, organization, discipline, and kindness. These are the values that guide her in both her personal and professional life.