Oral and Maxillofacial Surgery Associates, Inc., was founded in 1979 by Lewis W. Williamson, D.D.S., M.S. in Honolulu, Hawaii. To better serve our West Oahu patients, a second office was opened in Aiea in 1995. Gregory Y.C. Lung, D.M.D. joined the practice in 1997. David S. Haynes, D.M.D., who has practiced in Hawaii since 1997, joined in 2007. James M. Michino, D.M.D., joined the practice in 2011. Michael J. Pampalon, D.M.D., joined the practice in 2015.

Our team consists of individuals dedicated to our goal to provide the highest level of surgical care in a caring and supportive atmosphere and to promote and support our patients growth toward a healthy quality of life. Our administrative team strives to be empathetic and efficient and is highly skilled in the management of all your treatment needs. Our surgical assistants are trained and experienced in all aspects of oral and maxillofacial surgery. As part of our continuing commitment to excellence, our surgical assistants are certified in dental anesthesia management through the Dental Anesthesia Assistant National Certification Examination (DAANCE).

Dr. Williamson had a passion for helping people and oral surgery was the perfect medium for this. He was highly skilled in orthognathic, implant, maxillofacial pathology and cleft palate surgery. He treated his patients with dignity and respect despite their diverse backgrounds. He improved the lives of many people with his meticulous surgical skills.

Dr. Williamson was born in St. Louis, Missouri and received his undergraduate degree with Highest Distinction from The University of Iowa in 1969. Dr. Williamson continued his education at The University of Iowa graduating Summa Cum Laude from the College of Dentistry in 1972. He completed his internship at the U.S. Navy Hospital in San Diego in 1973.

Dr. Williamson had been in private practice of oral and maxillofacial surgery in Hawaii since 1979. He is a Diplomate of the American Board of Oral and Maxillofacial Surgery, a member of the American Dental Association as well as a Fellow in the American College of Dentists, the International College of Dentists and the American Association of Oral and Maxillofacial Surgeons.

He continues to serve as Chief of the Oral and Maxillofacial Surgery Service at The Queens Medical Center. Dr. Williamson is a past president of the Honolulu County Dental Society and the Hawaii Society of Oral and Maxillofacial Surgeons. He has also served as a member of the Advisory Committee of the American Board of Oral and Maxillofacial Surgery.

Dr. Lung, who was born in Nuuanu and raised in Kaimuki, is a St. Louis School alumnus. He attended the University of Hawaii and the University of Washington and graduated in 1985 with a Bachelor of Arts in Biology. Dr. Lung then received his Doctor of Dental Medicine degree in 1990 from Tufts University School of Dental Medicine in Boston, Massachusetts.

Dr. Lung then pursued a two-year General Practice Residency in New Orleans, Louisiana, at Charity Hospital-New Orleans which is affiliated with the Louisiana State University Medical Center. He completed his Oral and Maxillofacial Surgical Residency at the University of Minnesota Hospital and Clinics in 1996. Following this, Dr. Lung entered into a one-year Fellowship at the Orofacial Surgical Center in Nashville, Tennessee. While there, he had the opportunity to focus his training in salivary gland pathology, traumatology and reconstructive surgery. Dr. Lung has particular interests in implant, orthognathic, trauma and cleft surgery. Dr. Lung currently serves on the Surgical Executive Committee at The Queens Medical Center and is one of eight surgeons in the State of Hawaii that manages facial trauma.

Dr. Lung is a Diplomate of the American Board of Oral and Maxillofacial Surgery and a Fellow of the American Association of Oral and Maxillofacial Surgeons. He is also a member of the American Dental Association, the Hawaii Dental Association and the Hawaii Society of Oral and Maxillofacial Surgery.

Dr. Haynes was born in Wilmington, Delaware and raised in Fort Lee, New Jersey. He received his undergraduate degree from Rutgers College in 1988 and his dental degree from the University of Medicine and Dentistry of New Jersey in 1992.

In 1996, Dr. Haynes completed a four-year residency in Oral and Maxillofacial Surgery at the Washington Hospital Center in Washington, D.C. He was trained in all facets of the specialty with an emphasis in orthognathic surgery, trauma, pathology and reconstructive surgery. The following year, Dr. Haynes was an Associate Professor in Oral and Maxillofacial Surgery at the West Virginia University School of Dentistry. Dr. Haynes has been in practice in Hawaii since 1997. He has a growing interest in implant, oral pathology and maxillofacial reconstructive surgery.

In 2001, Dr. Haynes became Board Certified in Oral and Maxillofacial Surgery. He is a Diplomate of the American Board of Oral and Maxillofacial Surgery and a Fellow of the American Association of Oral and Maxillofacial Surgeons. He is also a member of the American Society of Dental Anesthesiologists, the American Dental Association, the Hawaii Dental Association, the Academy of Osseointergration, the American Cleft Palate-Craniofacial Association and was the past president and now serving as the current Secretary-Treasurer of the Hawaii Society of Oral and Maxillofacial Surgery.