I hope your employer is paying you since, they are suppose to be responsible for all fees towards this Visa.
To be employed as Registered Nurse under H1B.
Three Categories Possibly Qualifying for H1B
1) Certain types of RNs may meet these requisite qualifications for the H1B visa. The first category of nurses who generally will be approved is the certified advanced practice registered nurse (APRN) category.
clinical nurse specialists (CNSs) - Which you do not qualify for.
certified registered nurse anesthetist (CRNAs)Which you don't qualify for
certified nurse-midwives (CNMs) Which you don't qualify for.
certified nurse practitioners (NPs) fall within this category.Which you don't qualify for
If an APRN position requires the employee to be certified in that practice, the nurse must possess an RN, at least a Bachelor of Science in Nursing, and some additional, graduate-level education. CNSs include Acute Care, Adult, Critical Care, Gerontological, Family, Hospice, Palliative Care, Neonatal, Pediatric, Psychiatric and Mental Health-Adult, Psychiatric and Mental Health-Child, and Women's Health nurses. NPs include Acute Care, Adult, Family, Gerontological, Pediatric, Psychiatric & Mental Health, Neonatal, and Women's Health nurses.
2) The second category of nurses who may qualify for the H1B are those in administrative positions requiring graduate degrees in fields such as nursing or health administration.
Home care is driven by health care regulations which you don't have a understanding a new nurse in the USA, therefore you don't qualify for. It can be dangerous for a new person who is not aware different neighborhoods and can be very expensive if you don't know the local laws ( getting parking tickets are very expensive, and if you don't pay them you can loose your driving and any professional license.)
3) A final, more subjective group that may receive H1B approval includes those who have a nursing specialty such as critical care and peri-operative nurses, or who have passed examinations based on clinical experience in school health, occupational health, rehabilitation nursing, emergency room nursing, critical care, operating room, oncology, and pediatrics, but who are not APRNs. In these cases, the petitioner must show that the nature of the particular position is so specialized and complex that one would normally expect the person performing the duties to have attained a bachelor's (or higher) degree, or its equivalent.
How care does not require anything beyond a simple RN. Doesn't qualify.
Personally, I would contact a lawyer, it seems like your employer brought you here under false pretenses. A job that could not have been filled by Americans should have been waiting for you or they should have sent you home. You are putting yourself in danger with immigration since you don't have a H1B qualifying job. Before you invest money on a cross continental flight, seek legal advice.
As a physician, how many years have you work in the capacity as a RN, which also a requirement for H1B. Why not try coming to the US as a Physician ? My daughter just completed the USMLE step 1 and it was not a difficult test for her. In the long run, presently it is easier to get a permanent visa as doctor and the pay is much higher.