Frequently Asked Questions - US Consulates
Consulates all over the world issue visas - a permission to enter USA for a specific purpose. Consulates are a part of the State Department (DOS - Department of State).
When a visa applicant sets up a user account in the appointment system, an 8-digit identifying number is assigned to the applicant. When logged into the appointment system, this "Request Number" appears in white against a red background in the upper right hand corner of the screen in parentheses after the applicant's e-mail address:
Contact the consulate. If they have not already done so, they will correct the situation upon request.
You can apply for COS. Even if L-1 is rejected, you can still maintain your L-2. In case of a visa rejection, you should be able to come back on L-2 visa or reapply for L-2 visa on the spot.
It looks like your visa was not canceled, you just did not use it. Note two things. First, non-use of an earlier issued visa should not create any problems in the future. But second and much more important, you HAVE to tell the hospital that you had an H-1 earlier. As far as I know, there is a question on the H-1 forms that specifically asks that question. Not answering the questions on the forms truthfully can get you into trouble. Check the forms, if there is no question that asks about any earlier H-1, you are fine.
I am trying to take an appointment for my wife to renew her H-4 visa since the dates are available right now. She came here on H4, switched in between to F-1 (change of status) but did not leave US, then got the new approval for change of status to H4 (after we filed for green card) and wants to get it stamped now. There is a bit of confusion on the DS-156 form that I have to fill out.