Meet The Doctors

Dr. Miwako Hayashi, DDS

  • Graduate of New York University,
  • Licensed in US and Japan
  • Speaks fluent English and Japanese
  • New York University College of Dentistry (DDS)
    Advanced program in Orthodontics at New York University

  • Showa University School of Dentistry (DDS)
    Pediatric Dentistry, Post Graduate School at Showa University (PhD)

  • Practiced in Manhattan, 
    Millennium Dental Service


Dr Miwako Hayashi received her Japanese graduate dental degree in Pediatric Dentistry and proceeded with Orthodontic Program at NYU and found herself to pursue  NYU dental school for a more comprehensive and solid foundation for general dentistry.   With solid foundation in General Dentistry, she can apply that to her Children and Orthodontic treatment.  She has clinical experience in NYC and NJ for several years before coming back to Tokyo.  She is a proponent of CAMBRA (CAries Management By Risk Assessment) and like to see children and adults to lower their risk of developing dental caries.  

Dr. Yasuhiro Sakamoto, DDS, PhD

     Doctor of Dental Surgeon,              Nippon Dental College, Niigata
     PhD  Oral Maxillofacial Surgery       Tokyo Medical and Dental University
Accreditation as Oral Maxillofacial Surgeon
     Board Certified Fellow (専門医)     Japanese Academy
                                                                  of Oral Maxillofacial Surgery
     Board Certified Trainer (指導医)    Japanese Academy
                                                                  of Oral Maxillofacial Surgery
     Specialist (専門医)                            International Association
                                                                   of Oral and Maxillofacial Surgery

Dr Yasuhiro Sakamoto has his residency at Tokyo University Oral Surgery Department and worked at Tokyo University Oral Surgery and Mitsui Memorial Hospital.  Board Certified Trainer is the highest distinction given to Oral Maxillofacial Surgeon who have extensive research, and experience.     Dr Sakamoto takes care of all difficult extractions, including four wisdom teeth extraction under IV sedation.  

Hirokazu Enatsu, DDS

Graduate,  UCLA School of Dentistry

Graduate, UCLA School of Engineering, Summa Cum Laude

Licenses: State of California and Japan

Speaks fluent English and Japanese, some Mandarin and Spanish

Dr. Makoto Sakurai, DDS, PhD

     Doctor of Dental Surgeon,      Tokyo Dental College
     PhD  Dental Anesthesiology   Tokyo Dental College
     Board Certified Fellow as Dental Anesthesiologist(専門医)
     Board Certified Trainer for Dental Anesthesiologist(指導医)
He was a Board Certified Trainer by the Japanese Academy of Anesthesiology and was teaching at Tokyo Dental College.    Board Certified Trainer is the highest distinction given to Dental Anesthesiologist who have extensive research, and experience.  Dr Sakurai will be administering IV Sedation for patients who need 4 wisdom teeth removed or have dental fear.

Advanced Microscopic Edodontics (Root Canal Treatment)

Graduate of theUniversity of Illinois at Chicago (UIC) in “Microscopic Endodontic Techniques” (2001)and “Microscopic Endodontic Course”(1999) with Dr Buchanan (Santa Barbara). 
UCLA Endodontic Continuum (2014)

Dr Enatsu was the first dentist from Asia to attend courses taught by the world renown endodontist (Dr L Stephen Buchanan) who introduced the NiTi files to dentistry and the first dentist from Asia to graduate the Microscopic Endodontic Techniques course together with the graduate students at UIC, Department of Endodontics


Graduate, Faculty of Orthodontic Research and Continuing Education ( by Dr Richard Litt) Invisalign Certification Seminar, San Diego, California (Orthodontics without braces)

Long before Invisalign was introduced in Japan, Dr Enatsu was certified as an Invisalign doctor by completing an Invisalign Certification Seminar in San Diego, California. A solid foundation in Orthodontic Diagnosis and Treatment was learned from the Dr Litt, who was the Chairman of Postdoctoral Orthodontics at the University of California, San Francisco. Dr Enatsu was the first from Asia to attend the Orthodontic Course for General Dentist by Dr Litt.

Sustaining Member of AACD

American Academy of Cosmetic Dentistry

The American Academy of Cosmetic Dentistry has developed a credentialing program to help the public find excellent cosmetic dentistry care. Once a cosmetic dentist has attended two annual meetings of the academy, he or she is eligible to take a written examination to demonstrate a mastery of the concepts, techniques, and materials of cosmetic dentistry. Upon passing this examination, the academy awards recognition as a “sustaining member” of the academy.

Having met the above requirements and thereby demonstarting his extensive knowledge of cosmetic dentistry, Dr Enatsu is a sustaining member of the AACD.

Mentor at Kois Center

Dr Enatsu is the first and only dentist in Asia with the distinction of being Mentor to teach at the world renown Kois Center (for Advanced Restorative Dentistry) in Seattle, Washington. This distinction is given to graduates of Kois Center who have demonstrated a thorough and working knowledge of Kois Center concepts and methods by passing comprehensive examinations and also keep their knowledge up-to-date by attending the Annual Kois Center Symposium.

Implant: Graduate, California Implant Institute

Dr Enatsu was the first dentist from Asia, to attend theCalifornia Implant Institute, to learn advanced implant procedures. Dr Enatsu’s first implant experience was when he was a student at UCLA Dental School.

Bite: Graduate, Kois Center

The Kois Center’s concept is based on obtaining an appropriate bite to lower the risk damaging your teeth or restorations. In addition to Kois concept, Dr Enatsu also studied at the Orognathic Bioesthetic Institute and attained a Level II accreditation. He has also taken many other courses pertaining to bite and has reached his conclusion to introduce Kois concepts at the United Dental Office Tokyo.


Dr. Enatsu serves as the Director of UCLA Japan Alumni Association in charge of Dentistry and is also on the Committee on International Relations for the Tokyo Medical and Dental University Dental Alumni Association. He also lectures to the local dental society to share his clinical expertise.

Dr. Enatsu spends many hours each year continuing his education in the United States to learn up-to-date techniques, even though in Japan, doctors are not required to take any continuing education courses to maintain their license.

Recent Programs Attended by Dr. Enatsu

  1. Practical Occlusion for Esthetics and Function, UCLA
  2. Roth/William Orthodontic Seminar
  3. American Dental Association Annual Sessions
  4. Chicago Midwinter Convention
  5. Triservice Meeting, Tokyo, Japan
  6. 'State-of-the-Art Esthetics' Seattle Institute for Advance Dental Education by Dr. Frank Spear
  7. UCLA Endodontic Continuum (2014)
  8. Kois Symposium(2005-2018)
  9. A4M Thailand, Anti-Aging Convention for Nutrition, Heavy Metal Intoxication, Chelation (2018)
  10. IV treatment with Vitamin C and Glutathione
  11. Gut Flora and Immune System
  12. TriService Meeting, Okinawa, Japan 2023