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Cheng H. Tai, DDS, of Cheng H. Tai, DDS, MS, PC, New York City, came to the United States from his native Taiwan to pursue his education. He earned a Master's degree in Material Science from New York University while concurrently studying at the school’s University of Dentistry, where he earned his dental doctorate degree and specialty certificate in prosthodontics. After serving as a clinical assistant professor at NYU for four years, Dr. Tai began a private practice in 1992, which continues to operate from its Midtown Manhattan location at the corner of Madison Avenue and 57th Street.

Dr. Tai views dentistry as a fine art, requiring knowledge, skill, and patience to perform at the highest levels. He breathes this passion into his work and, with his prosthodontics training, applies an artistic touch to make every cosmetic procedure as natural as possible. Dr. Tai personally cares for every patient who comes through his door.

Dr. Tai lives with his wife Jen-Hui and their two boys; Jen-Hui works as the practice’s office manager. When he's not at the office, Dr. Tai enjoys jogging, traveling, and visiting local museums.

Evan B. Schwarz, MS, DMD is a prosthodontist at Allen and Schwarz Dental in Central Park South, New York. He specializes in repairing serious or extensive dental problems, helping his patients feel confident and comfortable enough to talk, eat, laugh, and smile again. He is highly trained in all aspects of restorative and cosmetic dental work, including crowns, bridges, dentures, implants, and veneers.

Dr. Schwarz began his higher education at Johns Hopkins University in Baltimore, receiving a bachelor of science degree in biomedical engineering and materials science and engineering. While earning his doctor of dental medicine degree from Tufts University School of Dental Medicine in Boston, he served as a clinical teaching assistant. He then completed his dental residency at Columbia University College of Dental Medicine in New York City, where he also earned a master’s degree in prosthodontics and was a clinical instructor.

To keep up with the latest developments in prosthodontics and general dentistry, Dr. Schwarz maintains an active membership in several professional and medical organizations, including the American Academy of Facial Cosmetics. He is married with two daughters and enjoys cooking and sports.

Kenneth L. Allen, DDS, MBA is a native New Yorker, born in the Bronx. Besides offering expert dental care to his patients at Allen and Schwarz Dental in Central Park South, New York, he is a highly respected lecturer, writer, and educator.

After earning a bachelor’s degree in chemistry from the University of Pittsburgh in Pittsburgh, Dr. Allen proceeded to dental school, earning his doctor of dental surgery degree at New York University College of Dentistry in New York City. Later in his career, Dr. Allen continued his comprehensive education, receiving a master of business administration from Rutgers University in Newark, New Jersey.

As a Clinical Professor and Vice Chair of the Cariology and Comprehensive Care department at NYU’s College of Dentistry, Dr. Allen teaches dental students, conducts clinical and educational research, presents lectures around the world, and publishes articles and manuscripts related to his work.

He also helped institute the College of Dentistry’s innovative Selective in Teaching Skills program, which allows first-year and third-year dental students to work closely together in their preclinical courses.

Dr. Allen maintains active membership in many professional organizations, including the Academy of Operative Dentistry, the American Association for the Advancement of Science, the American Association for Dental Research, the American Association of University Professors, the American Dental Association, the American Dental Education Association, the New York County Dental Society, and the New York State Dental Society.

Patrick Ng-a-fook, DDS, or “Dr. Pat,” at Smile Design Manhattan in Midtown West, New York City, began his education as an undergraduate at the State University of New York at Stony Brook in Stony Brook, New York. In June 2002, he graduated with a bachelor of arts in economics, a minor in business, and a concentration in biology. This trio of interests encouraged him to further explore science and anatomy, as well as a career in dentistry.

In 2003, Dr. Pat enrolled at the Virginia Commonwealth University School of Dentistry in Richmond, Virginia. There, he earned his doctor of dental surgery.

Following graduation, Dr. Pat enrolled in an advanced education in general dentistry residency at Callen-Lorde Community Health Center, through Lutheran Medical Center. This experience helped Dr. Pat discover his passion for working with patients and presented him with the opportunity to train dental residents, something he always wanted to do.

Never one to slow down, Dr. Pat has also pursued an education in endodontics and earned a certificate from Lutheran Medical Center with a focus on surgical and nonsurgical endodontic treatment. His extensive knowledge and expertise in these areas established him as Smile Design Manhattan’s resident endodontic expert.

Dr. Pat is board eligible from the American Association of Endodontics. He’s also a proud member of the American Dental Association, the New York Dental Association, and the American Association of Endodontists.

When he isn’t working to save or restore his patients’ teeth, you can find Dr. Pat traveling, trying out new cuisine, or spending time with his family.

Smile Design Manhattan founder Lee Gause, DDS, has established himself as a clinical leader in cosmetic dentistry techniques, a level of expertise he brings to the Midtown West practice in New York City.

Dr. Gause began his professional education as an undergraduate at the University of North Carolina at Chapel Hill in Chapel Hill, North Carolina, graduating in 1998 with a bachelor of science in biology.

Inspired to pursue a career in dentistry after earning his undergraduate degree, Dr. Gause enrolled at the Howard University College of Dentistry in Washington, DC, where he earned his doctor of dental surgery in 2004.

A year later, Dr. Gause relocated to New York and founded Smile Design Manhattan. Over the next decade, Dr. Gause worked incredibly hard, honing his craft in cosmetic dentistry techniques such as porcelain veneers, Invisalign®, and dental implants.

Dr. Gause’s years of experience, attention to detail, and approachable, friendly demeanor have helped him establish a boutique family of patients including celebrities and professional athletes.

When Dr. Gause isn’t spending time with patients, you can find him dedicating his time and energy to Smile Design Gallery, a charity he founded that uses art sales to fund dental care for low-income children and seniors, as well as men and women who are being rehabilitated from homelessness.

On a personal level, Dr. Gause enjoys contemporary visual art, physical fitness, and helping develop public dental health systems in emerging nations. Professionally, Dr. Gause is a fellow of the International College of Oral Implantologists. 

Dr. Yoonah Danskin, DDS, is a board-certified periodontist and implant surgeon based in New York City, specializing in advanced periodontal therapy, aesthetic gum procedures, and precision implant dentistry. As a Diplomate of the American Board of Periodontology, Dr. Danskin is known for her meticulous, patient-centered approach to creating healthy, stable foundations for long-term oral health and beautiful smiles. Her expertise includes periodontal disease treatment, laser therapy, gum grafting, full-mouth rehabilitation, bone regeneration, and complex implant procedures, all tailored to the unique needs of each patient. Patients value her calm demeanor, precision-driven philosophy, and dedication to delivering compassionate, high-quality care.

Born in Seoul, South Korea, and raised in New York City, Dr. Danskin attended Bronx High School of Science before earning her degree in Neuroscience from Johns Hopkins University. She received her Doctor of Dental Surgery (DDS) degree from UCLA School of Dentistry and completed advanced training at Yale New Haven Hospital, Memorial Sloan Kettering Cancer Center, and the VA New York Harbor Healthcare System in affiliation with New York University. In addition to her clinical work, Dr. Danskin has contributed to research and education in periodontics, implant surgery, and dental oncology, with a special passion for supporting oncology patients through specialized periodontal care.

Nancy Jiyoung Ahn, DMD, at Smile Design Manhattan in Midtown West, New York City, began her undergraduate education at the State University of New York at Stony Brook, in Stony Brook, New York. In 2011, she received her bachelor of science in biology, which ignited her passion for oral health and dentistry.

Dr. Ahn was accepted to the Rutgers School of Dental Medicine in Newark, New Jersey. She spent the next four years working under the guidance of renowned professors and specialists, earning her doctor of dental medicine in 2016.

The following year, Dr. Ahn completed her general practice residency at Jacobi Medical Center in Bronx, New York, which exposed her to complex cases that allowed her to enhance her skill set and provide comprehensive oral care.

Professionally, Dr. Ahn is a proud member of the American Dental Association, the Academy of General Dentistry, and the American Academy of Cosmetic Dentistry.

She uses her training and expertise to help patients of all ages to reach and maintain good oral health, and create beautiful confident smiles. Outside of providing preventive and surgical care, Dr. Ahn also regularly contributes her dentistry expertise to medical and scientific journals.

In her spare time, Dr. Ahn enjoys practicing yoga, traveling, and spending time with friends and family members.

“Dr. Alvin” graduated from Lafayette College in 1967 with a degree in biology. He then attended the University of Pennsylvania School of Dental Medicine, where he received his Doctor of Dental Medicine degree in 1971 with numerous honors. He completed a mixed dental internship in general dentistry, general anesthesia and oral surgery at Philadelphia General Hospital, where he was selected as Intern of the Year. He has been in private practice in midtown Manhattan since then and has taught at Columbia University College of Dental Medicine in the Division of Operative Dentistry for over 25 years. Dr. Alvin takes pride in passing along his honed dental skills and expertise to the next generation of Boyd dentists.

Dr. Alvin and his wife, Anne, live in Chappaqua, New York, and have four children named Justin, Allison, Evan and Andrew. Anne is a volunteer EMT in Chappaqua.

Andrew Boyd, DDS, is a skilled restorative and implant dentist practicing at Drs. Boyd P.C. in the Midtown East neighborhood of Manhattan in New York City.

Dr. Andrew graduated Cum Laude from the University of Pennsylvania in 2007 with a BA in Psychology. He received his DDS degree from Columbia University College of Dental Medicine in 2011, where he was awarded many clinical and academic honors and was also Student Government President. After dental school, he completed a one-year general practice residency at the Midtown Manhattan VA Hospital, followed by three years of advanced specialty training in prosthodontics. In his final year, he was elected chief resident by his professors and peers.

Dr. Andrew is an expert in the latest in digital, cosmetic, and reconstructive dentistry. He also enjoys teaching prosthodontic and reconstructive dentistry at Touro College of Dental Medicine in Hawthorne, New York. At Touro, he is one of few dental specialists who help patients with complex dental needs smile again. 

Dr. Andrew lives in Westchester County with his wife, Stephanie, who works as a Marketing Director in New York City.

“Dr. Justin” graduated with a Bachelor of Arts in psychology from Dartmouth College in 1996, where he was captain of the varsity Men’s Lacrosse team. Before dental school, he spent a year working in this office as a dental laboratory technician. He graduated from Columbia University College of Dental Medicine in 2001, attaining many clinical and academic honors. After dental school, he completed a one-year General Practice Residency at the midtown Manhattan Veteran Affairs Hospital. Since then, he has been practicing full-time at Drs. Boyd P.C. and taught operative dentistry at Columbia. Dr. Justin is committed to learning the latest dental techniques, and his passion for dentistry shows in how well he treats his patients.

Dr. Justin lives in Chatham, New Jersey, with his wife, Jess, and he loves coaching his four sons in lacrosse and running after his young daughter in his free time. Jess is an advertising creative producer in New York City.

Kenn Kakosian, DDS, PhD, is an experienced dentist serving New York City patients at DentAlign NYC in Midtown East, Manhattan. Dr. Kakosian has been in the dental field for over forty years and has a number of degrees.

Dr. Kakosian initially graduated from dental school in Yerevan, Armenia, in 1983 and began performing oral surgeries. From 1990-1991, he participated in scientific research for Temporomandibular Joint (TMJ) Disorder in Moscow, Russia, and Geneva, Switzerland. Dr. Kenn received his PhD in 1992 and began studying orthodontics.

After moving to New York City, he attended New York University College of Dentistry and graduated in 1997 with a Doctor of Dental Surgery. He has been an assistant professor at New York University Dental School since 2005. In 1997, Dr. Kakosian opened his own practice in the Chrysler Building, New York where he continues to offer patients high-quality dental care.

Doctor Kenn Kakosian implemented Invisalign® (clear braces) to his practice in the very beginning and he is one of the top providers in New York for more than 20 years. DentAlign NYC is now proudly an Invisalign Platinum Provider.