Ningen Dock Center

Ningen Dock originated in Japan and is a physical examination for company employees paid for by their employers.

Providence Medical Institute’s Ningen Dock Center has been serving Japanese-based employers and Japanese individuals since 1992. Ningen Dock is a comprehensive health examination to detect and treat diseases, particularly early stages of disease. The health exam also can detect and help prevent serious progressive disease by controlling the risks linked with lifestyle-related diseases. The series of tests and the exam and consultation about lifestyle habits and medical history can prolong a healthy lifespan.

Patients who undergo Ningen Dock physicals generally enjoy exceptionally good health because they are engaged in preventing illness and maintaining their fitness and nutrition. For the employer, it can help lower long-term medical costs because of early detection and treatment.

The Ningen Dock Examination

Most examinations are completed within a half-day at the center and may include the following services.

  • Physical Examination
  • Comprehensive Blood Panel
  • Heart Examination (ECG)
  • Chest X-Ray
  • Upper Gastrointestinal (GI) X-Ray
  • Ultrasound
  • Mammography (Screening)
  • Colonoscopy
  • Bone Density Test
  • EGD (Esophago-Gastro Dudenoscopy)
  • CT
  • Pulmonary Function Test
  • Comprehensive Test Reports and Recommendations (Japanese and English)
  • Additional Screenings and Diagnostic Tests are Available


Using comprehensive testing and imaging, the Ningen Dock physicians conduct comprehensive evaluations of each patient’s medical condition. The center follows the Ningen Dock Physician Examination System, developed in Japan and widely used by reputable Ningen Dock centers in Japan to produce comprehensive health condition reports and recommendations that are completed and presented to patients. The health report and recommendation are available in Japanese and English.

Our Physicians and Staff

You will be able to select your preferred physician for your health check-up. Our well-trained Japanese-speaking Ningen Dock staff will provide you with excellent service.

Fred Sakurai, M. D.

A native of Tokyo, Dr. Sakurai received his medical degree at Keio University Medical School 1952, and served his internship at Kings County Hospital in New York. He then completed 5 years of surgical residency at New York Medical College, Metropolitan Medical Center.

Dr. Sakurai is the first Japanese to pass the examination of American Board of Surgery. In 1963, after completing military service as a Major of U.S. Army Medical Corps and a chief of surgery at Fort Mac Arthur Hospital, Dr. Sakurai began his family practice in Gardena, California. In 1993, he moved his practice to Torrance and became the medical director of Little Company of Mary Hospital Ningen Dock Center. In 2001, Dr. Sakurai was appointed to Honorable Co-chairman of Physician’s Advisory Board, National Republican Congressional Committee, in 2003, Dr. Sakurai received “Physician of the Year” award from the Republican National Congressional Committee. Dr. Sakurai appears at local Japanese Television Program for the latest medical information every other Saturday.

  • Specialty: Family Practice, General Surgery

David V. Inouye, M. D.

Dr. David Inouye was born in Los Angeles, California, and earned his bachelor’s degree in Biology from Occidental College. In 1983, he graduated from the University of southern California school of Medicine and completed internship and residency at Children’s Hospital in Los Angeles from 1983-1986. Dr. Inouye has had private pediatric practice in Torrance since 1987.

  • Specialty: Pediatrics

Katherine K. Inouye, M. D.

Dr. Katherine Inouye was born in Tachikawa, Japan, and earned a bachelor’s degree in psychology from the University of Southern California. She graduated from UCLA Medical School in 1983. Dr. Inouye did her internship and residency at Children’s Hospital in Los Angeles from 1983-1986. In 1986, Dr. Katherine Inouye practiced pediatrics in Los Angeles, and then began practicing in 1994 in Torrance, California.

  • Specialty: Pediatrics

Elaine Shoji, M. D.

Dr. Shoji was born in Chicago, Illinois. In 1976, she graduated from the Columbia University Medical School, College of Physicians and Surgeons in New York City and interned in pediatrics at Harbor UCLA Medical Center. Dr. Shoji completed a pediatric neurology fellowship at Harbor-UCLA. She is a clinical professor at the UCLA School of Medicine. She has a private pediatric office in Rolling Hills Estates and cares for infants, children and adolescents.

Center Clinical professor.

  • Specialty: Pediatrics

Donald Okada, M. D.

Dr. Okada was born in Santa Monica, California and graduated from UC Berkley with a BA in Psychology. In 1964, he graduated from the UC San Francisco Medical School. His post medical school training including residency in OB-GYN were at Harbor and Westwood UCLA and the City of Hope. As a United Air Force Officer, he was responsible for obstetrics health care for air force personnel and their families. In 1971, Dr. Okada became a member of the UCLA School of Medicine at Harbor UCLA Medical Center. Until 1977, he was an OB/GYN assistant professor for high-risk obstetrics patients. He opened his own practice in 1977. He was OB-GYN department head of Little Company of Mary Hospital and the chief of staff of the hospital medical staff and is currently an emeritus member of the Little Company of Mary Health Services Board of Director.

  • Specialty: Gynecology, Obstetrics, Gynecologic Surgery including Laparoscopic operation

Toshiyuki Tanaka, M. D.

Dr. Tanaka is from Kobe, Hyogo, and earned his Bachelor of Science from UCLA. He graduated from UC San Diego Medical School and interned at Case Western Reserve University. He completed his residency at Peter Bent Brigham Hospital of Harvard Medical School in Boston in nuclear medicine and his second residency was in internal medicine at the White Memorial Hospital in Los Angeles. In 1982, he opened and independent clinic.

  • Specialty: Internal Medicine, Nuclear Medicine.

Joe C. Yoshida, M. D.

A native of Hiroshima, Dr. Yoshida arrived in the United States in 1952 and later graduated from the Nebraska University Medical School. His internship was at Fresno General Hospital in internal medicine. Dr. Yoshida has an independent office in Gardena.

  • Specialty: Internal Medicine, Early Treatment

Masaharu Osato, M.D.

Dr. Osato was born in Tokyo, Japan. He graduated from Loma Linda University Medical School in 1983. He finished Internal Medicine Residency at Kettering Memorial Hospital in Ohio in 1986. Then, he did pediatric Residency at Loma Linda Medical Center in 1986-1988. Worked in Japan for 10 years as Internist and as Ningen Dock director. Back in States in 1998, did GI Fellowship at Harbor UCLA Medical Center and opened his office in March 2001 in Torrance.

  • Specialty: Internal Medicine, Gastroenterology
Address: 3531 Fashion Way Torrance, California 90503
Phone: 310-792-4488

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