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Procedure for Corona mRNA test and certificate issuance


  • Dr Kobayashi's Silicon Valley office, which is affiliated with this site, will carry out the mRNA test required for entry into Japan. All procedures from the corona test to the certificate issuance can be completed at each location.


  • Document screening when entering Japan is becoming increasingly rigorous. In some cases, due to inadequate documents, individuals are not allowed to enter the country at the destination, and are forced to return to the United States.

  • Common issues occur when the corona test performed is not a test method specified by the Ministry of Foreign Affairs (for example, an antigen qualitative test) or the specimen is not collected from the specified site (for example, a nasal swab).


  • Dr Kobayashi's office performs an mRNA measurement test based on the NEAR method which corresponds to the test specified by the Ministry of Foreign Affairs. The medical staff in the office will ensure that the sample is taken from the nasopharyngeal site and is tested immediately. 

  • We now offer our service at two locations, Silicon Valley and San Francisco.  Reservation is necessary for this service. Please apply for the service from the "Corona test + certificate issuance" menu on the application page. If you apply for multiple people such as family members, you will need to make a reservation individually. The reservation process each locations is different.  

  • Reservation for Silicon Valley office will be a "tentative reservation". After you sign up, we will contact you to confirm the appointment by e-mail or phone call within 24 hours. Total service fee is $350. No payment is required when making a reservation. Please pay at the reception desk before the test when you come to the clinic. We do not accept health insurances for this service. The Silicon Valley location is:

Shuichi Kobayashi MD

2490 Hospital Drive, Suite 105

Mountain View, California 94040

Tel. 650-962-4630​


  • Reservation for San Francisco office will be a direct online booking. Payment is required to make a reservation. The service fee is $350. We do not accept health insurance for this service. The service at SF office is available on Monday, Thursday, Friday and Saturday at this time. Please come back for update.

Shuichi Kobayashi MD

490 Post Street, Suite 1244

San Francisco, California 94102

Tel. 650-962-4630​, 415-699-6495

  • We require that you bring your passport, or a copy of you passport for your appointment. This will be use both to create the certificate, and for your to check the validity of the details. Please note that we will not be able to compensate for any losses caused by incomplete documents found at a later date.​


  • If you wish to cancel the service, please be sure to contact us by phone on business days at least 24 hours before the reserved time. Cancellation by email or phone message is not accepted. Cancellation within 24 hours is not accepted except for unavoidable circumstances. After the certificate is issued, we will not be able to accept refunds regardless of the circumstances.

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