Head Doctor

Takao Watanabe


Born in Utsunomiya, Tochigi Prefecture


Graduated from Nihon University School of Dentistry

Worked at 2nd Generation Goke Dental Clinic in Sendai City


Nihon University of Dentistry, Department of Oral Pathology enrollment


Graduated with Doctor of Dental Medicine

Entered, Turumi University Dental Department – First Oral and Maxillofacial Surgery class


Part-time Lecturer

April 2006 to Present

President of Kosei Medical Corporation

Lecturer, Turumi University Dental Department – First Oral and Maxillofacial Surgery class

Associate Professor, Kanagawa Dental College, Division of Clinical and Gross Anatomy

Fellow Diplomat, ICOI (International Congress of Oral Implantolosist)

Specialisty, Japanese Society of Oral Implantology

Chief Editor, Ministry of Health, Labor, and Welfare – Advanved Technology Research Council of the Japnese Dental Association



Emi Yamauchi


Graduated from Matsudo, Nihon University School of Dentistry


Received a graduate degree from Matsudo, Nihon University School of Dentistry

April 2006 to Present

Lecturer, Nihon University Department of Orthodontics

Member, Japanese Orthodontic Society

Certified by the Japanese Orthodontic Society

Member, Tokyo Orthodontic Society

Member, United healthcare Dental Research

Member, Japan Society of Cleft Palate

Advanced Member, Japan Dental Laboratory

Certified, Honda Formula Bad Breath Treatment



Daisuke Yamauchi


Graduated from Nihon University School of Dentistry

"I have begun to work at Kosei Dental Clinic starting this year. My goal is to give painless treatment, give clear explanations, and to be a trustworthy dentist that will answer patient concerns and questions in an extensive way so the best can be done for the patient. Apart from being able to treat cavities and periodontal disease, I am currently studying dental esthetics and periodontal surgery. I am also doing research with laser implants."

March 2010 to Present

Fellow, Kanagawa Dental College Department of Anatomy

Member, Japan Society of Oral Implantology

Member, Japan Society for Oral and Maxillofacial Surgery

Member, Japanese Society of Periodontology

Member, Japan Society of Jaw Occlusion

Member, Japan Society of Clinical Periodontology

Member, Japan Society for Laser Dentistry


Part-time Dentist

Kazukiyo Izumi


Graduated from Moto University, Dental Department

Passed the National Dentistry Examination


Admitted to University of Southern California School of Dentistry


Graduated from University of Southern California School of Dentistry

Received Doctor of Dental Surgery degree

Passed the state of California Dental License Exam

October 2008 to Present

Executive Director, Japan Endodontic

Participant, International Bachelor Degree Dental Association (I.C.D)

Participant, Japan Society of Jaw Occlusion Conference

Member, Japan Dental Association

Member, American Dental Association

Member, American Endodontic Society


Hygienst certified by the Society of Periodontology

Etsuko Matsuyama

"I recently was recongnized by the Society of Periodontology for the ten years I have spent treating patients with mucous membrane impairments. I strongly believe that with long prevention treatments you will be able to fight disease in the future."


Dental Hygienist

Hideko Kobinata

"I have been devoted to dental hygiene for approximately 13 years now. There were some rough times balancing work and raising children, but when I see long time patients return time after time, I get more motivation to continue and now I am truly glad I continued to work as a dental hygienist."


Dental Hygienist

Aiko Yoshii

"The days seem to pass quickly when treating various patients every day. Everyday I learn new things, but I feel a sense of fulfillment when a patient says, "Thank you" to me after a treatment. I would like to tell more people of the importance of dental prevention to help fight against oral disease."



Mana Evans

"I believe the staff and doctors at Koseishika truely do their best to think about patients and meet their needs. We are very friendly and it is a comfortable atmosphere. I don’t think there are many places that emphasize teaching patients about proper oral hygiene as we do at Kosei Dental Clinic."



Tyler Evans

"At KIDC our purpose is to fix troublesome areas and we emphasize preventative treatments. I hope your experience with us is something that will be with you for your entire life. With this goal in mind, I believe we can be very successful in providing the highest quality treatment possible."